8Fun BBS02 750w Mid-Drive Kit Review

8fun Bbs02 Electric Bike Kit Review 1
Bafang Bbs02 Mid Drive 1
Bafang Bbs02 Nuvinci Cvt Hub 1
Bafang Bbs02 Lithium Battery 1
Bafang Bbs02 Lcd Display 1
Bafang Bbs02 Lcd Console Assist 1
Bafang Bbs02 Bottom Bracket 1
Bafang Bbs02 720w Motor 1
Bafang Bbs02 Twist Throttle Buttons 1
8fun Bbs02 Center Drive 1
8fun Bbs02 720w Motor 1
8fun Bbs02 Allcell Battery 1
8fun Bbs02 Display Panel 1
8fun Bbs02 Recumbent Trike 1
8fun Bbs02 Electric Bike Kit Review 1
Bafang Bbs02 Mid Drive 1
Bafang Bbs02 Nuvinci Cvt Hub 1
Bafang Bbs02 Lithium Battery 1
Bafang Bbs02 Lcd Display 1
Bafang Bbs02 Lcd Console Assist 1
Bafang Bbs02 Bottom Bracket 1
Bafang Bbs02 720w Motor 1
Bafang Bbs02 Twist Throttle Buttons 1
8fun Bbs02 Center Drive 1
8fun Bbs02 720w Motor 1
8fun Bbs02 Allcell Battery 1
8fun Bbs02 Display Panel 1
8fun Bbs02 Recumbent Trike 1

Summary

  • One of the only mid-drive electric bike conversion kits around, 8Fun is an established brand
  • Offers both pedal assist and throttle mode configurations, great LCD screen with lots of options
  • Not sophisticated enough to sense when shifting gears and let up, may wear chain and cassette faster
  • Keeps weight low and center on bike, makes fixing wheels and flats easier than hub motors

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Video Review

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Introduction

Make:

8Fun

Model:

BBS02

Price:

$800 USD

Suggested Use:

Urban, Trail

Electric Bike Class:

Throttle on Demand (Class 2)
Learn more about Ebike classes

Warranty:

1 Year Comprehensive

Availability:

United States

Model Year:

2014

Bicycle Details

Motor Weight:

8.5 lbs (3.85 kg)

Cranks:

Integrated with Bottom Bracket Motor

Brake Details:

Wuxing Levers with Electronic Motor Cutoff

Accessories:

Plastic Bash Guard, Speed Sensor (Mounts on Chain Stay with Magnet on Rear Spoke), Quick Connect Wiring

Other:

Fits 68 mm to 73 mm Bottom Brackets, Built in Motor Controller, 46 Tooth Chain Ring, Estimated Charge Cycles for Sealed Lead Acid Batteries ~600, Estimated Charge Cycles for Lithium Polymer ~800, Estimated Charge Cycles for Lithium-ion ~1,000, Battery Used in Review is a 48 Volt 10 Amp Hour Lithium-ion ~$700, Can Update Settings with LCD to Reach Higher Speeds

Electronic Details

Motor Brand:

8Fun

Motor Type:

Mid-Mounted Geared Motor
Learn more about Ebike motors

Motor Nominal Output:

750 watts

Battery Voltage:

48 volts

Battery Chemistry:

Compatible with SLA, LiPo or Lithium-ion

Display Type:

Bafang C961 Backlit LCD

Readouts:

Speed, Odometer, Battery Level, Assist Mode (Programmable 3 to 9 Levels)

Display Accessories:

Independent Button Pad

Drive Mode:

Cadence Sensing Pedal Assist, Twist Throttle

Top Speed:

20 mph (32 kph)

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Written Review

The 8Fun or “Bafang” BBS02 electric bike kit consists of a 750 watt mid-drive motor, chain ring, cranks and LCD screen with button attachment. It’s designed to mount at the bottom bracket of a bicycle (replacing the standard ring and cranks) and pull the chain to propel the bike and rider forward. Before we get too far here, I realize there may be some confusion about the brand name… The full name is Suzhou Bafang Diandonchi Gongsi and this translates to Suzhou, 8 directions electric motor company (Suzhou is the town name). The “8 directions” part means “every direction” which is roughly equivalent to “Universal Motor” so altogether that’s City of Suzhou Universal Motor Company. Their marketing department came up with 8Fun which is short and catchy in English. In America, the motor is labeled as 8Fun but the LCD display still says Bafang. The company is well known for mass producing mid-level geared hub motors. What I love about this kit is that it’s one of the only mid-drive ebike kits anywhere and can be used on all types of setups including recumbent, cargo, road and mountain bikes (with bottom brackets between 68mm and 73mm). Unfortunately, there are physical constraints that limit its use on fat-tire bikes given the width of their bottom brackets at 100mm.

The BBS02 motor is a 750 watt geared design (as powerful as is legal in the USA) located in the black canister that sits just below the bottom bracket when attached (see picture below). It’s relatively quiet and leverages the rear cassette for improved climbing or speed depending on the gear you’re in. As with other centerdrive electric bike systems (like those from Bosch or Panasonic) this thing is fairly efficient if used properly. For example, if you start from rest and are in a high (hard / fast) gear you’ll strain the motor and eat through your battery quickly but if you start in a low gear and shift up as you gain speed (just like a manual transmission car) you’ll extend your range and get more torque. Because the BBS02 completely replaces the bottom bracket, cranks and chain ring you will only have one gear in the front after installing this kit. This means if you had a 21 speed before with 7 cogs in the rear cassette and 3 rings on the front you will now only have a 7 speed bike.

The battery setup with these 8Fun middrive kits is variable because they don’t come standard with a battery. You can work with a shop to choose one that will mount easily to your frame (either as a rear rack or downtube design) and get the size you need for power or distance. For the 750 watt motor setup shown here I was using a 48 volt 10 amp hour pack with longer lasting Lithium-ion cells and we just put it in the panniers hanging on the rear rack of the KMX recumbent trike. Just make sure the pack you choose is compatible with the system so you don’t have to manually cut and adapt wires. Depending on the shop you work with they may be able to configure the kit for you, my review was done with help from Long Island Electric Bikes that had several kits installed on different bikes by Surly and KMX.

Considering how integrated this kit looks it’s actually not that difficult to install. You will need a crank puller and spanner wrench and worst case your local bike shop could help. One of the nice parts about a mid-drive is that it leaves the front and rear wheels, cassette and derailleur alone. This reduces unsprung weight, keeps the bike balanced and make truing wheels and fixing flats much easier. I love that the kit works with pedal assist as well as throttle and the LCD display and break-out button interface is beautiful, backlit and intuitive. There’s a power button, a plus and a minus symbol that let you choose different levels of assist or navigate menus. You can see your speed, trip distance, battery level and get into wheel size settings, readout preferences, levels of assist and more. The display isn’t easily removable but it does swivel if you take one of the screws out on the back which is useful if you’re mounting this on a vertical bar (like on a recumbent) vs. a standard straight bar.

This is absolutely one of my favorite electric bike kits because it’s so versatile, well balanced and powerful. The price isn’t bad at all and if you’re willing to screw around a bit with the installation this could transform your bike into something really unique. Compared with purpose built centerdrive systems this one doesn’t have the ability to sense when you shift gears so that could lead to some grinding and wear the chain and cassette down faster… the key is to learn how to work with the system and shift when the bike already has some forward momentum vs. when it’s really pulling the chain. 8Fun has created something special with this kit and opened all kinds of new ebike possibilities that just wouldn’t work with hub motors. I’m thinking pedicab drivers could have a blast with this and as you can see from the review of this and the less expensive, less powerful BBS01 it also works great with cargo bikes.

Pros:

  • Can be operated above 20 miles per hour depending on wheel size and bike setup
  • Offers both pedal assist and throttle mode for different styles of riding
  • Leverages rear cassette for improved climbing or high speed riding, more efficient than a hub motor
  • Keeps weight low and center on bike, reduces unsprung weight as compared with a hub motor
  • Mid-drive electric bikes are easier to service (wheels and tires are easier to get at)
  • 8Fun (Bafang) is a well established, trusted hardware supplier in China with solid track record
  • Kit is compatible with a range of bottom bracket sizes (68mm to 73mm) but unfortunately not super wide 100mm fat-tire bikes
  • Display is back lit, has a nice break out button console and lets you change lots of settings like number of pedal assist levels, speed readout and wheel size

Cons:

  • Not smart enough to detect gear changing and therefore does not let off which can mash gears
  • A bit louder than most gearless hub motors I’ve tested, stands out on bike (not very stealth)
  • Have to install yourself or work with a shop, not the hardest kit I’ve worked with
  • Cadence sensing pedal assist isn’t as smooth as torque, batteries are sold separately from kit
  • Gear range limited by single front ring, could increase gears by using a dual drive setup in the rear

Resources:

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More 8Fun Reviews

8Fun BBS01 350w Mid-Drive Kit Review

  • MSRP: $650
  • MODEL YEAR: 2014

One of the only mid-drive electric bike conversion kits around, 8Fun is an established brand. Offers both pedal assist and throttle mode configurations, great LCD screen with lots of options...

Rob
4 years ago

Terrific review, Court. Answered a bunch of questions I had about this system. One day I’d like a great fat bike with a mid-drive for serious hill climbing. This system isn’t quite there yet but things appear to be moving in the right direction.

Reply
Court Rye
4 years ago

Awesome! So glad the review helped you out. I try my best to think of questions and cover the product thoroughly but also objectively and make it fun. Always open to suggestions and ideas to improve going forward as well :)

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Silversurfer(cv)
3 years ago

Thanks for the review! I have a “joe-bike ” cargo and was considering this kit to help me get my kiddos to school on time I. The fall… The thing I’m wondering is how much clearance do you think there’d be if I mounted it with the drive directly below the Bottom Bracket?

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Ian
3 years ago

Where would be a good place to pickup a battery to go along with this kit? I’d love to get a 555Wh battery like on the BionX D kits. I’d love to see where I would go to to compare battery options!

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Court Rye
3 years ago

I’m not super familiar with the Joe-Bike but I did a Google image search and it looks like your weeks are ~26″ which is pretty standard. There should be good clearance with this kit… I realize the wheel base is longer though so just be careful going over curbs and stuff because the motor might be more vulnerable in these cases. For help with this kit you might reach out to a shop that carries them like Long Island Electric Bikes.

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Court Rye
3 years ago

Hi Ian! Good question… There may be different websites that sell batteries, the ones on the bike I tested here were from All Cell I believe. The bikes were built up by Long Island Electric Bikes and they might be able to help you get a compatible battery. They ship all over the US.

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Raymond Lord
3 years ago

Bonjour from Québec, Canada ;O)

Court, thanks for the excellent review! I own a RANS Screamer tandem and wish to electrify it! With its 145mm rear dropout, the motor hub option is limited. Could this kit be “reversed” and used on the captain’s front chain ring?

Thank you in advanced / Merci à l’avance

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Craigo the Great
3 years ago

Hi…Thanks for a comprehensive review…As I am seriously considering this exact kit… I just was wondering about something not included in the review.. What is it like to pedal the bike without using any electric assist.? Thanks in advance..

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Court Rye
3 years ago

Great question Craigo, the bike feels pretty normal when riding without any power or assist. It’s a bit heavier than a normal bike and you’ve only got one front chain ring but besides that, it feels standard and operates quietly. I think there is a freewheel inside so it’s not like you have to turn gears inside the mid-drive or anything, and there’s no magnetic cogging that I could feel. If you end up with this kit I’d love to hear your feedback when riding unassisted.

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R3d_N3ck
3 years ago

Terrific Review. I have one of these and you’re pretty much spot on. Mine was from China, Conhismotor and came with the bike. I don’t think I could have managed fitting a kit to a bike.

– Price: Paid about 2k AUD which worked out at about 500 for the bike, 500 for the kit, 500 for the battery and 500 for freight.
– Range: at full power about 30km mostly flat with the 48V 10Ah battery
– Top Speed: typical cruise is 46km/h with me peddling a bit
– Battery: have 10Ah LiF3PO4 but was offered a 18Ah LiMn for the same price. Same volume. Can’t get the same capacity LiPo in the same size as a LiMn. A smaller battery would stsruggle with this motor.
– Charge Time: 2 hours with a 5 amp charger – a LiPo will charge faster
– Ride Time: 1 hour at full power with the 10Ah battery, would be 6 at minimum assist (always use full).
– Charge Cycles: they promise > 1000 for a LiPo
– Warranty: Conhismotor has been very good. He answers the emails promptly and has sent some replacement parts free. However, if something expensive went wrong, I know I don’t have the same legal protection I would if I bought locally.
– Other: The front crank has a built in free wheel in it that allows the motor to drive the chain while the pedals are stationary. This means you probably can’t make any mods to the front crank. Also, there is a bit of a delay when using the thumb throttle. The throttle will lift the front wheel in 1st gear. Standing starts are best in 2nd. The road is rough on a bike at speed; I expect this will be true for any bike with a big motor. Everything rattles and things fall off the bike. The chain came off a lot initially and eventually broke. The bike shop shortened the new chain and adjusted the gears for me. It’s been good since. Always apply the brakes before gearing down – stops the motor from flicking the chain off. The bike feels heavy without the power on. There is no resistance from the motor with power off, but you’re pushing a 26kg bike. With the power on it feels light and agile. 1400km and still very happy. The electrics have been flawless.

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Court Rye
3 years ago

This is a great first hand account, thanks for sharing your experience with the 8Fun BBS02! I agree with your points and appreciate the perspective on how additional weight changes the overall feel of the bike when powered off, how the chain can fall off or break more easily with a mid-drive and how the front chain rings probably can’t be modified or replaced. Also, just the reminder to people who might not be familiar with these high powered ebikes or moving so fast that they can feel bumpy… This is one of the first things I had to grapple with initially and what has driven me to explore full suspension ebikes and seat post shocks.

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Mike
3 years ago

Hello
I also fitted a 48V 20A BBS02 motor with a 48V 13ah LiPo bottle type battery to my bike this summer which I bought from China for about 700€ altogether. It doesn’t say how many Watts on the motor, but 48 x 20 gives 960W I think. I fitted it to 700C wheel “city” bike to which I’ve fitted 2.3 inch MTB tyres to as I ride on a lot of dirt tracks and the other tyres were just too scarey! I think the kit is really easy to fit. I changed the 48T chainring for a 38T ring as I wanted help climbing hills over top speed. I have a seven speed 32T-11T cassette on the back. It will hit about 32 kph on the flat without pedalling with this gearing. With the 48T chainring it would hit 50+ kph. I ride mostly on level 4 of 9 and mostly just use the pedal assist. I always pedal. If you abuse the throttle on levels 5-9 (even if you are pedalling) the battery starts to suffer. Using it as I do, sometimes coming home after 35km it’s still only dropped one bar on the battery meter. I do live in a fairly flat area so probably 70% of this distance is fairly flat. The most i’ve done at one go was 60km and I still had over half the battery left. I intend to get a Watt meter in order to get a more accurate measurement of this. The motor has a considerable amount of torque for hills and makes riding a real pleasure. I’ve done about 800km this summer so far. The brakes come with micro switches which kill power to the motor. I gently apply my left brake when changing gear (without actually braking). This gives a smooth gear change. You don’t really need to do this on the lower power levels unless the chain is under a lot of tension, but on the higher levels the gears can really crunch if you’re not careful. Wouldn’t want to snap my chain when far from home. I’m sure that if you did this often on the higher power levels you could soon do this! In first gear on level 9, if you hold the handlebars and give it full power (standing next to the bike) it literally flies into the air! Smiles from ear to ear! Probably not good for the chain/cassette though! I’m really happy I bought this kit. It would be nice to have a 48V 20Ah battery which matches the power of the motor.

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Court Rye
3 years ago

Hi Mike, thanks for providing this great testimonial! It’s always nice to hear from people who have tried the different bikes or kits and experimented with varied terrain and riding conditions.

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Bridgett
3 years ago

Hi, I have been thinking about investing in a conversion kit and this review was the most helpful review I have found so far. I have only one question… My bike has twist grip gear changers, is that a problem with this kit? I have looked at some other kits and it would involve changing the gear changers on the bike and it’s starting to sound easier to buy an electric bike. As I live out in the bush it’s not possible for me to try out bikes to make sure I get one that is comfortable for me, so I am keen to keep my current bike and convert it.

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Court Rye
3 years ago

That’s a great question Bridgett, this kit will replace your front chain ring or chain rings (some bikes have multiple rings in the front). It should work fine with your rear cassette and that’s one of the advantages of a mid-drive, it gives you more leverage for climbing or speed applications. with this said, the kit does come with a twist throttle that is usually meant to go on the right grip. If you’ve already got one or two grip shifters, you might have to take one off and replace it with this (it would be okay to move the shifter that controls the front chain ring because you won’t need that derailleur anymore). I guess what I’m saying here is that you probably could get this kit to work but there will definitely be some work involved and it may permanently change your setup. If you like your bike then I would recommend considering a pre-built ebike because the wires will be more hidden and all of the gears and shifters will already be set. Most ebikes that have throttles us trigger shifters to avoid the issue you laid out. One ebike that comes with the weaker version of this motor but still works very well is the Volton Alation Mid-Drive 350. If you want, feel free to share your height, weight and budget in the Compare section of the forum where more people could chime in and try to help guide you with finding a great ebike.

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Bo
3 years ago

Thanks for a nice review. I have a question. What do you mean with “fits bottom brackets between 68mm and 73mm”? Is there two separate kits with different length of the bottom bracket or are you able to fit the 68mm bracket in to a 73mm frame with a slightly left centered q factor? Thanks in advance – Bo

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Court Rye
3 years ago

Hello Bo, I have not installed this kit before myself but I was told that it will adjust to fit sizes between 68mm and 73mm and I assume the mounting point will stay fixed on the chain side and expand on the other side so that the chain will not be pulled too far out. The reason I included this information is mostly to let people who have fat bikes know that this won’t work on their setup, those bikes have bottom brackets that are just too wide :)

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Dusty Trailhead
3 years ago

Wow, I’m still confused. 21 down to 7 speeds and that doesn’t effect performance on either flats or hills? It seems if you want to use it as pedelec, you will have to choose a big ring and walk it up the steeps. Otherwise, you have a small ring for the steeps and use it as a scooter on the flats. What I mean is you don’t want to be walking, so you choose a “top” gear that your legs can’t keep up with on the flats but keeps you riding up the steeps. If you could use a couple of chainrings with it, then I think you would have both. It seems that hub with torque is the sweet spot for pedelec.

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Charles
3 years ago

If anyone is looking for a Bafang BBS-02 Mid Drive system with adapters that will fit a Fatbike with a 100 mm bottom bracket, you can find it for sale at the California Ebike Store here and here’s a short video they produced to show it in action!

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Court Rye
3 years ago

Thanks for the heads up Charles, it appears that this conversion system takes the stock BBS02 or 01 and then extends the crankshaft to fit the wider application of a fat bike? Neat stuff, appreciate the notice and you can also post this in the 8Fun Forums here if you’d like.

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Rusty Rail
3 years ago

Can I purchase in Canada from a dealer

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Court Rye
3 years ago

Hey Rusty! I have no idea… wish I could help more but I don’t know of many dealers to begin with in Canada and this kit is sort of unique and rare. I’ve heard of a couple US shops offering it online. You could ask around in the 8Fun forum here and see is any fellow Canadians could help you locate a dealer!

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Jeremy E.
3 years ago

Hello, I have a 17 mile commute, 12 highway miles, 5 city miles, 34 miles both ways. I have a low end cyclocross bike (motobecane fantom cx). What ebike conversion kit would you recommend? I am currently stuck between this 8fun bbso2 and a 500 watt kit from ebikekit. If I choose the one from ebikekit, I think I’ll go with the 20ah lithium ion battery, but not sure if I’d want direct drive or geared. If I choose the 8fun I don’t know what company to buy a battery from, and I also can’t get very much information from 8funs site. Thank you for any help anyone can give

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Court Rye
3 years ago

Hi Jeremy, great question. If I were in your position and money was not an option I’d go with the BionX S-350 because it’s powerful with 48 volt system, has regen, offers throttle and has a really nice pedal assist setup (which I prefer for commuting vs. throttle only). My second choice would be the 8Fun BBS02 because it also has assist and throttle and the mid-drive is very efficient and well balanced. That said, it only has one front chain ring which might alter the number of gears your Motobecane Fantom CX can use. If you’d like help finding a dealer for batteries and stuff just reach out and I’ll check with some of the people I know who are either nearby or can ship etc. or you can ask around in the 8Fun forums here. My last choice would be E-BikeKit because they’re throttle-only and the batteries can’t mount to the downtube easily so weight becomes rear-heavy. If I was going with their kit however, I’d choose the geared motor because it’s much lighter and it freewheels so you won’t have cogging as with the gearless design. Hope this helps!

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Peter Lee
3 years ago

I have 2006 Velomobile Go One3. What kit do you recommend that might fit it? I have a rohloff 18 select gear changer so using a hub motor is not an option. Noise is a factor as any motor inside the body will resinate louder than with traditional bicycles that don’t have covers. I’ve seen some pictures of center style motors with chain to the front work. Thanks

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Court Rye
3 years ago

Hi Peter, what a beautiful velomobile! I just looked up some pictures on Google and was very impressed. I see your point about wanting a quieter motor because the confined, hard space will likely amplify noise… I actually think this BBS02 kit would be a great choice, it’s not too loud and I have seen it used on recumbent tadpole trikes before (just look at the images above). I cannot guarantee a fit as I have never seen a Velomobile Go One3 but I think it’s probably your best bet! If you do get it working, please share some pictures and advice in the 8Fun Forum for others who might be considering something like this :)

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Peter Lee
3 years ago

I take possetion of the Go One3 next week so I can get detailed measurements. I need help in the recommended place to order the Bafang. Is it better to order straight from China or local dealer. Seems hard to find any order address. Any help on a good Li on battery set up an place to order I live in Florida USA is there any place close by me I can drive too? Also, I notice the kit does not have a controller. I see the crank w/motor and the display. I know you order the battery separate. Where is the controller? Thanks

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Court Rye
3 years ago

Hi Peter, great questions here. The shop that let me test this kit (on Surly bikes and a recumbent) was Long Island Electric Bikes in New York. They have experimented with different bikes and have a lot of knowledge about fit (they might be able to help you determine whether it will work with the Go One3). I’m not exactly sure about where the controller is located (possibly in the motor unit) but it definitely comes with the display, twist throttle and brakes. You have to buy a battery separately but Long Island Electric Bikes sells many options so you can do a downtube setup or a rear rack. I recommend visiting their site here and giving them a call at (631) 306-4542

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Maker1618
3 years ago

Hi everyone, Sure appreciate your reviews on the BBS 02. As a custom builder your opinions mean a great deal when deciding on components. The question I have regarding the mid-drive is: do the pedals rotate backwards when rolling the bike backwards or are they disconnected until pedaling forward? The reason I ask is because my latest folding bike project won’t allow the crank to turn while folded although this is necessary for portability. I see there are two clutches in the drive and wonder if one of them will free the crank completely. Thanks Maker1618

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Court Rye
3 years ago

Hey, great question! I’ve double checked on your question with a shop that caries these (Long Island Electric Bikes) who just tested it for us and they said that the pedals do go backwards when the bike is rolled backwards. There is however a freewheel in the crank which means you can manually turn the crank backwards without the drivetrain moving (including the sprocket and chain). So basically, you can pedal backwards when riding… but if you move the bike backwards then the pedals will be forced to go backwards.

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Peter Lee
3 years ago

Installed the Bafang BBSo2 last week. Chose the 22ah Lithium-ion. It’s a very quiet motor which I ordered the 52T as my rohloff 14 gear with rear sprocket at 15 and the front sprocket at 48T when going 20 to 25mph my legs are spinning to keep up. I’ll let you know when the 52T come in and see if it solves the problem. Yes I did set to 16″ wheels to trick the system and it works top speed about 30mph. By chance the speedo cable was to short and while waiting for the extension to arrive I drove the Velomobile with out the speedo. Result 34.9mph with throttle PA I could not spin fast enough to keep up with the speed. Now back with speed cable connected and wheels to 26″ and the controller will cut out between 19 & 20 mph. This is comfortable and probably saves on battery and engine life. Nice to know what to do if the need ever arises.

Question: The other day I rode 80 miles with pedal assist to 4 & 5 and some throttle. The battery indicator bar is still on full. I was expecting at least one bar down by now. Any idea on this? I will continue to ride without charging to see how far I can go on this 22ah Li on battery. I also have a converter that brings it down to 12v that runs the lights, and fan and with all that on the bar is still on full charge. I am expecting that the battery charge indicator is not accurate and will run out of juice at the worst time. But I have to take that chance to see how far I can go on a charge. If I peddle backwards the motor will stop. There are no hills here but the bridges have a steep grade and had no problem climbing up. Going down I am doing about 50mph and need a higher gear if I want to keep up with the speed. I used my GPS for speed and distance and found the speedo and miles very accurate. I am so happy with this unit I will buy a spare so I wouldn’t have to wait for a repair. Spare parts seem to be hard to come by another reason to buy a spare. Without the battery just the crank motor should be less than $400 about what a repair would cost with parts and labor. Installing was very easy and needed to buy some special tools to finish the job. I had to extend the power cord to the battery which came with the hardware to do that. I have a bad left knee and the first time I used the PA the pressure was off the knee and a pleasure to ride again. Till later, Peter Lee

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Court Rye
3 years ago

Great comment Peter, it sounds like the BBS02 is working well for you (except for the battery level indicator). Given the large size, 22 amp hours, maybe it still shows as full because it is keeping the voltage high in the system? I’m really not sure… would love to hear how it turns out. Which little tools did you have to get for installing the BBS02?

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Peter Lee
3 years ago

Yes, when pushing the bike (my Velomobile) backwards the peddles do move backwards. When pushing the bike forward the peddles do not move. You can peddling backwards when stationary.

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Court Rye
3 years ago

Awesome feedback Peter, thanks for jumping in to help answer this question for us :)

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Peter Lee
3 years ago

Installed the T52 with the Rohloff 14 gear and 16 sprocket it back. Still seems I need a higher gear when the bafang is set at level 3 for assist. Will do more checking and report back

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Mike leroy
3 years ago

Very informative review, Court. I checked one detail that leaves some doubt. This Lectric Cycles FAQ Page mentions “Throttle Only Operation with pedal assist (PAS) turned off (Set to “0”)”. I am unsure whether Bafang updated the unit, or if electriccycles is mistaken? You mention no throttle-only mode, which is very important to me. I want the PAS to work like a turbo charger, not cruise control, for a steep hill. 80% of the time, I do not need any assist. I envision leaving PAS set to 0 all the time.

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Court Rye
3 years ago

Hi Mike, I think it all depends on how the reseller sets the unit. I’ve heard Hi-Power Cycles talk about offering a throttle only mode in “H” or “High Power” mode which I’m going to update in their reviews because I didn’t notice it or the unit wasn’t setup right when I did my tests. Some resellers lock the unit at 20 mph and others may leave it open. It sounds like you can get a throttle only mode to work on the unit… even if you can’t, the throttle basically overrides pedal assist so it isn’t a huge deal, you basically just don’t pedal and use the throttle but risk the occasional power burst when you forget and pedal by accident.

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Peter Lee
3 years ago

My Bafang came with 20mph throttle limit. If I set the wheel at 16″ it will go to 32mph on my gps.
If I disconnect the speedo I will get to 34.9mph and an error message which I ignore. I’m happy with the wheels set at 16″ as I use the gps anyway for speed. I very rarely use the throttle. I start out with 0 PAS find a comfort gear and if I need a little assist go to 2 as 1 is too low. That gets me to 16mph. If I want to keep up with the racing crowed I go to 3pas and that will get me a constant 24mph. As I get in better shape that will change but with a bad knee and rebuilt hip that the best I can do for now. 4 & 5 uses a lot of battery and never had to use it yet. But 5pas will get me to 32mph constant if I need to catch up to anyone.

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Court Rye
3 years ago

Thanks for the tips about getting a higher top speed with the Bafang BBS02 kit, sounds like you’re really enjoying it.

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LP
1 year ago

How do you set the wheels at 16 and how do you disconnect speedometer

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Peter Lee
3 years ago

Update on the BBS02 Bafang. I needed the hex socket to install the cranks, needed a special tool for the lock ring for the lower crank but could not find the right tool so I used a lock wrench that did the job. I did buy a socket to remove the inside of the hub bearings and the local bike shop had it. Yes, I leave the PAS at “0” I can just use the throttle only. I’m very happy with this product, when looking at posts from a few years ago there was no such option and price. I may order another set and battery for spare parts and the extra battery. That way if on a long trip out of town I can fix it quick and have the extra battery. I am using the PAS and throttle less and less as time goes by. If I use just the throttle I can get it up to 15 mph shut off the throttle and stay at that speed for a long time. The screen has a WATT meter so it I use the throttle I can see how many WATTS was used. I note the speed and gear and if I do the same without the throttle I know how much human power I am using. If on PAS I can bring the WATTS down the harder I peddle. About the 5 bars on the display, 60 miles with PAS on 2 to 3 the bars will go to 3 and 2 than 1 and shut down. I have installed a 12v converter to the 48v Li on and run the GPS, Iphone charger, fan for the Velomobile when hot or windshield starts to fog, heater fan for heavy fog, sound sys amp and small radio. All of that and still made an easy 60 miles. If I want to go further I would not use the Bafang until I really needed it to extend my distance. By using the PAS at level one would also increase the distance. The Go One3 Velomobile weight is 66lbs and with the Bafgang and battery with tools electronics and parts with a water bottle would bring me to about 90lbs. Is there a way to post pic here? I have been ridding almost ever day, each time with new experience. It takes about 5 ot 6 hours to recharge the battery.

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Court Rye
3 years ago

Awesome update Peter! I would love to see your images and hear more about this custom velomobile you’ve created. Feel free to post about it in the 8Fun Community Forum and reach out to me there or using the contact form here if you have any questions or need help!

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Tom Bardolph
11 months ago

I just bought a Go-0ne3, plan on installing an electric motor, and am considering the BBS02. I already have one on my ICE Vortex, so I’m familiar with it, but am undecided between getting another or using a hub motor this time. How has your experience been with yours, any tips or tricks to suggest, and have you posted any pics or videos of it anywhere online? … thanks

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Brad
3 years ago

Thanks for the review! I am thinking of putting this kit on my existing full suspension Giant Anthem, which has hydraulic brakes. Do you know if the brake switches from the kit can be fitted/adapted to hydraulic levers, instead of the cable brakes shown?

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Court Rye
3 years ago

Great question Brad, I don’t think the brake inhibitors are easily transferrable from one lever to the next. You might look around for hydraulic levers with integrated inhibitors from Tektro like the ones used on the Raleigh Tekoa-iE. I’m not sure what they’re called specifically but I know they exist and are used on many ebikes. The alternative would be to simply forego motor inhibitors but with a larger motor like BBS02 and off-road riding I prefer to use them… It makes stopping and shifting gears much smoother and probably safer. Some of the BMEBIKES do skip inhibitors and I call it out on the BM-Helio because it has a BBS01 running at 25 amps that feels like it could benefit from motor cutoff.

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Jerome
2 years ago

Hi Brad, i just bought a 27.5 Giant Anthem last may and the utlimate goal is to convert it with a bafang kit. I realize yesterday that i have hydraulic brakes, so i will have problem to make the conversion. Where are you now in your project? Does it works? have you solved brakes problem? thanks a lot for your help, Jerome

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dillon
3 years ago

Hey I was wondering if anyone could link me to a website that sells these, I saw a fake one on amazaon and want to be sure to get the right one.

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Court Rye
3 years ago

Hi Dillon, the shop where I tried this kit (and the BBS01) is called Propel Electric Bikes (formerly Long Island Electrics) and you can visit their site with this product here. The owner, Chris, is friendly and very responsive if you write or call :)

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Matt Hughes
3 years ago

http://www.EMPoweredCycles.com sells the 8fun Bafang BBS02 mid drive electric bike kit programmed for full throttle available in PAS levels 1-9. This means that you can be in any PAS level except for 0 and have full throttle on demand. Units are also programmed so max speed limit only applies to PAS and is ignored by throttle input. Buy from a trusted vendor who offers 2 year warranty support. Many have talked about having full throttle in PAS 0, this is not a good idea and when programmed as such, also forces full speed PAS in level 0 which is very dangerous. PAS 0 should remain PAS 0 for safety reasons. The only way to disable PAS is to disconnect a wire between the controller and the motor.

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Court Rye
3 years ago

Great feedback Matt, thanks for adding your voice here in a way that’s constructive and not overly promotional. It’s great that you guys sell these and I’ve heard good things about your company. Feel free to share your experiences in the 8Fun forums as well.

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Matt Hughes
3 years ago

Thanks Court for the welcome and for a creating a place we can collaborate on the BBS02!
If anyone out there has a throttle that acts like an on/off switch you can purchase a USB cable at the following link, http://www.empoweredcycles.com/collections/8fun-bafang-bbs02-accessories/products/usb-programming-cable-8fun-bbs02-mid-drive-motor then download the software and change your throttle to behave linearly like a throttle should. I can also provide you with a file to download to your controller that will add full throttle in PAS 1-9, many people have reported they like the motor programming like this and they grow to enjoy the PAS system without wanting to disable it.

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Court Rye
3 years ago

Very cool! Maybe you’ve already posted in the forums as well but feel free to share the same advice, I’m sure it will help some people :)

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Scott
3 years ago

Hi guys, I’ve just ordered my kit and I’m wondering if there are any strong bash guards or skid plates that will help protect the low hanging Bafang motor while riding off road?

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Court Rye
3 years ago

That is an awesome question Scott! I never thought about skid plates for mid-drives before (the Bosch Centerdrive does use a plastic casing for protection). Many bicycles and ebikes use metal bash guards on the front chainring and I believe you can switch out the chainring on the BBS02 for a Race Face or other ring and change the size and number of teeth… so it seems like adding a bash guard could be possible. I’ve just never heard of it? This might be a great topic for the 8Fun Forum and you can learn more about the Race Face chainring on the BM-Night Hawk review (and some of the other BMEBIKES). They offer it as an upgrade since their bikes are designed to be ridden on trail or mountain terrain. Check out the second picture on the Night Hawk review to see it up close.

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Scott
3 years ago

Thanks Court Rye, My other question is about suggested chainring sizes. I’m planning on mostly trail use and a few miles on paved paths to the trails. I live near Seattle and we have large hills and mud. My coworker who rides his ebike for hunting trips suggested the 34T raceface chainring for great torque and around 20mph top speed while never heating up the motor. My bike is a 1997 Specialized Ground Control with 8 speed Shimano cassette. Some questions for thought: What chainring sizes does everyone like? Have you noticed heat coming from your motor? How would you describe the torque and speed with your setup?

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Court Rye
3 years ago

Hi Scott, I have never owned this system or the BMEBIKS I shared in the last response, I just demo them while visiting shops around the country. I have heard that some BBS01 systems can heat up and struggle with climbing while using the stock chainring. I like the Race Face personally but have only used it for a few hours on the demo bikes. I’m sorry I can’t offer more advice, if you plan to do trail and mountain riding it might be a great direction to go. I have also seen Hi-Power Cycles use this on some of their bikes.

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Roy Prince
3 years ago

Hi Court, Thanks for your great website!

I have been watching the BBS02 space for a while now. I have 3 installs under my belt: One on a tandem tadpole trike, another on a Specialized Rockhopper 29, and one for me on a Townie but moving to a Specialized Hardrock 29. All are doing well and my clients are very happy – makes me happy too.

I think all the negatives you mentioned in the video have now been solved by the eRad BBS02 system from LectricCycles. As a disclaimer: I do not work for them but did get my systems from them. The new eRad system has a device that eliminates the mashing of gears when shifting and all the delays and not quite right delays, and a 100mm BB model for fat-bikes, have been solved. I think it’s time for you to do another video with the new system because this new BBS02 system is on par with the much more expensive Bosch and other systems.

Also because the stock chain rings are a bit tall – there are now spiders out there to allow users to go to smaller more torque-e chain rings. Especially the Raceface narrow-wide ones that help keep the chain from jumping off. My two cents, Roy from http://www.RPEV.org

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Court Rye
3 years ago

Great feedback Roy, thanks for the heads up! I’ve added the link to LectricCycles and will do my best to spend some time with their solutions down the road. I also checked out your website, cool stuff! Looks like you’re a big fan of the mid-drive solution for ebikes :)

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Gangadhar Chiplunkar
3 years ago

Hi, I am from Pune (India). I got my Bafang 750 W, 48 V mid drive kit and mounted it on my bicycle. Tried it out with 4 lead acid batteries just to test the system. It works well. Now I want li-ion battery pack for it. I can build one myself. I just don’t know the maximum voltage this kit can accept. It says 48 V nominal, but what is the Minimum and Maximum limit? The kit is delivered without any manual and the answer to this question is very difficult to find. Can anybody provide me with the answer. Thanks.

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Court Rye
3 years ago

Hi Gangadhar! This is a great question… I’m glad you’re enjoying the kit and I’d like to help you find an answer. I think your best shot is to ask the same thing (just copy and paste) in the 8Fun forums I’ve setup here. There are some very knowledgeable members and even some shop owners who could probably help you out :)

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Tushar Dube
2 years ago

Hello Mr. Gangadhar, I also live in pune. I wanted to buy a electric bicycle kit, but none are available in India. Can you please share from where you bought the kit and the price for the same. Thanks and regards, Tushar

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Adelle Nothnagel
2 years ago

Hi, Thank you for your review. Can the 8Tun 350W mid motor be fiiited to a Giant FD806 & Giant Expressway 1 folding bikes? What are the cons for fitting a mid motor to a folding bike? Thanks

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Court Rye
2 years ago

Hi Adelle! I’m honestly not sure. My experience actually converting electric bikes is limited but there are people in the 8Fun Forums here that can probably help to answer this for you. Just copy and paste your question :)

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Brian
2 years ago

Hey there, I just ordered one of these last week along with a 48v 20 ah battery. It hasn’t come yet but I plan to initially install it on a fat tire road bike and use it to commute to a train station. Does the LCD display easily come off? Does the battery lock to the frame? I’m just wondering how theft deterrent I can make those parts. I’ll be parking in a gated parking garage but there is still theft there. If the LCD doesn’t easily remove I wonder if I can put in some quick disconnects into the wires so I can take it with me?

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Court Rye
2 years ago

Hi Brian! Most of the displays I have seen are not designed to be taken off, someone would need a set of tools… there are some versions that swivel to help reduce glare but they still don’t “come off” with like a quick release. Battery packs are also a bit varied, most are locking and can be removed from the frame. If you’ve got a fat bike I’d strongly recommend getting an E-RAD kit because they can customize it to fit 100 mm bottom brackets. I’m not sure I’ve seen a fat tire “road” bike but I’m assuming you’ve looked into sizing and everything. If not, you might be able to get some parts or work with E-RAD they do a lot of cool stuff :)

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Brian
2 years ago

i’m running a regular british 68mm bb shell. when I say fat tire road bike I’m saying more around the 38-42mm range :) I wonder if I can cut up the wiring for the LCD and add a connector so I can take it off easily.

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Court Rye
2 years ago

Hmm… I’m not really sure? Might be able to get some input on the Endless Sphere forums or share your idea and ask for advice in the EBR Community. I’d love to hear how it turns out for you! There might be others who have considered the same thing and your feedback could help them :D

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Tim
2 years ago

Hi, I about to put a Bafang 750watt on my Scott Scale 29er Hard Tail. It currently has tubeless Schwalbe tyres which are great for offroad stuff but a bit of a pain on the road/paths. I was thinking of getting a 2nd set of tyres for me to ride on paths/roads/commuting like Continental City Tyres and going back to tubes…Do you think the speed would be much better with this Bafang to run tubed slicks?

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Court Rye
2 years ago

Great question… hybrid and slick tires definitely roll smoother and make less noise when I do reviews. If you were to just always use your tubeless Schwalbe tires I think the nubs would wear down over time and they would basically become slicks… but in the process your range would be somewhat limited, speed would probably be reduced (not by a lot) and your traction might also suffer on pavement whereas traction off-road would be worse with slicks.

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Tim
2 years ago

Thanks for the reply, I have decided to get a 2nd wheelset, keep by tubeless with cassette and discs for offroad and setup the 2nd wheelset/discs/cassette to change over for road/paths. I do worry if I do any offroaf firetrail riding with the bafang that I might go through a puddle and damage the mid drive/battery….should I be worried about this? Also a bit worried on motor burn out if I was in Granny gear trying to go up a steep hill offroad, your thoughts on both of these possible issues would be helpful.

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Court Rye
2 years ago

Hi Tim! Most ebike components are well sealed against water (maybe not waterproof but fairly water and mud resistant). Here’s a quick video from a shop owner talking about ebike maintenance. AS for climbing… if you use the lower gears (easier to pedal with) that will empower the motor and you to climb more effectively and is the exact right thing to do! Most motors are designed to automatically shut down if they are overheating but it’s good to treat them with care to help them last. I really like your idea of having two wheelsets :)

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Zoltan87
2 years ago

Extremely helpful review but I would have a question regarding gearing: I want to make a bike conversion for my parents to a system like this. But the main use would be between 3-7 MPH for helping them climbing really steep hills. Is that kind of low speed achievable for assisted cycling with this kit? Let’s say I would be using a 32 teeth chainring (is it possible to use such a small chainring at all??) and a 12-36 cassette at the rear. With this setup would be my mentioned speed range attainable? I really would like to make them able to keep up with my speed so we could do cycle trips together again as we have a holiday house in the mountains, but some of those hills are just too steep for their strengths. And it seems like all these electric bike conversion kits (especially the hub motors) are concentrating on higher speeds. I would greatly appreciate anyone’s thoughts on this matter.

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Court Rye
2 years ago

Great question! You can adapt the chainring on the BBS01 and BBS02 mid-drive motor kits using a spider and aftermarket chainring (many companies use RaceFace). Regardless of the chainring size and your cassette range, you can always choose the level of assist desired and there are 1 to 5 or sometimes 1 to 9 speeds. That’s with pedal assist, you can also just squeeze the throttle more gently to go slower. I think lower speeds are definitely possible here but if you’re about to buy one of these kits I recommend checking out E-RAD as they have a wider range of sizes, offer shift detection and can get you a battery that will work.

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Joe
2 years ago

I am considering building an e-bike for my daily commute. It is 7 miles each way and all flat. I would like to be able to get to 25 MPH. I am interested in the mid drive but am new enough to this to be confused to whether this is my best option. Weight distribution being low sounds like a good idea. I currently have no bike so I will be starting from scratch and would appreciate your suggestions. Thanks!

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Court Rye
2 years ago

Hi Joe! Sorry for the delayed reply to your comment here… I really like the 8Fun motor systems and they can indeed perform at higher levels. You can save money by doing a kit, have fun and use a bicycle platform that fits your style or body type more closely than a purpose built ebike… but of course there’s more work involved. Stock 8Fun kits are fine but lack shift sensing and aren’t easy to modify if you have a wider bottom bracket. For that reason I really like the e-RAD kits that are basically a custom configured BBS02 that does include a shift sensor. These kits can still hit the higher top speeds and e-RAD sells a bunch of different battery options, check them out here. Mid-drive motors tend to be a little louder and put more strain on the chain, sprockets and derailleur than a hub motor but the balance is good, efficiency and climbing is great and they blend in nicely and make wheel maintenance easy. If you were going to get a hub motor I’d recommend BionX because they are super quiet, have a great display that’s removable, excellent batteries with “deep sleep” to last longer and even offer regeneration! The only downside is a higher cost… one of my favorites is the D-Series 500 Watt Kit which you can get preinstalled on some ebikes like those from OHM. Hope this helps! You can also ask for advice in the Community Forums or go to the Endless Sphere forums where they chat about custom ebike builds all the time and are a bit more advanced (but also sometimes less patient or friendly)

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Rod
2 years ago

I built up a mountain bike, hard tail 27.5 fluid from anaconda in Australia. The process was quite easy basic bike tool set from aldi to remove bottom bracket and install drivetrain. The bike has hydraulic brakes, which means I could not install brake levers from kit. I did however install lever on left to give a nuetral, just used a hair tie to get it to rebound back and switch nuetral off. It means I have 2 levers, the brake lever and basically a clutch. Works ok but to be honest I rarely use it. By feeling the bike it will tell you when to change and you get smooth changes.

I installed a 22 amp 48 volt battery as I have a 50km commute. It does it easy with 40% battery left. I took it out for a 80km ride to test limit of battery, I ran out before it did and I still had 20% battery left (I was on 3 setting and averaged 25km per hour). To be honest i have yet to expend battery before recharge.

I have only one problem with setup being a single ring on front you end up crossing up your chain in lowest and highest gears ( with 3 rings you would only use your lower gears on the back derailleur in the front small ring and the top rear gears on the largest front ring). This means that you find it hard to adjust your gears properly and in top and lowest gears it tends to be a bit noisy and can skip up and down under load. To adjust I listen to the bike and change down when approaching hills and very rarely if ever need 1st gear.

Overall I would say its as I said to my wife “the best toy ever”. Have done 1500+km and am yet to have a major problem only improvements I would have is to put on slicks, which I will do when nobblies wear out. Ps in Aussie dollars 75% of American dollar it cost me:

  • Bike. $600
  • Kit. $650
  • Battery $670
  • Rack. $40
  • Tools. $40
  • Total. $2000 or about $1500 american

Rod

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Court Rye
2 years ago

Hi Rod! I like your idea with the extra brake with motor inhibitor to act as a clutch when shifting gears. These BBS02 units are very powerful and it can strain the chain and mash gears, sounds like your solution is very clever. Thanks for listing out the pricing details of your bike, it sounds like you’re enjoying it and didn’t have to spend so much money by building yourself :)

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John
2 years ago

I use my brake to act as a clutch when shifting gears too. You can also buy an aftermarket shift sensor for about $50 which cuts the motor out automatically when you shift.

Brian Bassett
1 year ago

I have 737 miles on a Bafang 750W center drive system with an aftermarket Lekkie Bling Ring sprocket. (Without replacing the original steel sprocket, off-set Will be an issue.) Battery: 50V (9P) Triangle Pack, High Energy-29E, 50V 24.8Ah. (18.8 lbs.) The Bike is a Panamericana, fully suspended, steel tour bike with 26” wheels, manufactured in Germany. Power is transmitted through a Rohloff 14-speed, speed hub and sporting hydraulic disc brakes. I have climbed 30,717 feet, 50 hours moving time in 33 total rides. Longest ride: 55.9 miles in 3.28 hrs. Elev chg + 1746 / – 1726 ft. (Note: I charge the pack to 80% and have never depleted it trying to extend the life of the battery so additional performance can be achieved.) The bike has been setup in a training/everyday configuration. Two full front panniers 20 lbs. each, an over full bar bag 6 to 10 lbs., two mirrors, umbrella, K-bar, 5 lbs. of Bluetooth speaker, GPS, 6’ cable lock, Litelok, dynamo and high density light, rear side-stand, leather seat bag and leather mud-flaps on full fenders, and water bottles. In this configuration she weighs 120 lbs. Rider weight is 300 lbs. The battery has been charged 15 times. Using the 8Fun motor has more of a learning curve than you would guess. Because I am using a Rohloff hub I disconnected the break lever cut-out switches. They were causing more problems than helping anyway. BUT, I stop peddling to shift, 1st to 14th and back without peddling. Quiet, smooth and 100% sure. Coming to a fast stop at a mistimed light would lead to a multi second power time-out and often a cpu lock-up (error 30H), leaving me floundering at the intersection. The power IS either on or off. The least peddle movement will activate the drive at whatever assist level it is set for. Applying torque to the peddles is only necessary if you wish to conserve battery or once at top speed to go faster. Unlike others I notice no drag from the motor when set at 0 PAS (assist)… but, my bike weighs 117 lbs. without my ass on it. Distance is of utmost importance to me not speed. I am truly hoping to reach distances of 100 miles as training progresses. I have mine set for levels 0-9 in pedal assist. I only use levels 0-3 all the time, most of the time, a lot of the time. I have found that using anything above PAS 3 is a luxury only. To feel the wind in your face. Speed is very very addictive. And distance is most important to me. I peddle with PAS when going uphill at all times. This sounds obvious but remember there is a throttle to bypass the peddle assist. On level ground you can pause peddling, feather in the throttle and actually increase speed a mile or 2 an hour, hold it there until you reach an incline that would bog the motor down or until the battery runs dry. To combat a head wind, you can go to a higher PAS level, peddle harder, use the throttle, or… down shift and KBO like you don’t have a motor. How Far OR How Fast. I use the throttle as little as possible knowing that it all decreases my maximum possible distance. But I can’t describe the feeling of timing an intersection correctly, going to level 9 on PAS, shifting to 14th gear and sailing through the light with little to no effort. I do believe that your claims of 100+ miles are very optimistic.

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auto-ebike.com
1 year ago

the BBSHD will instead of BBS02 if the price more cheap

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Mark Peralta
26 mins ago

I came across the internet about "ebike efficiency" from endless sphere
https://endless-sphere.com/w/index.php/EBike_Efficiency
and I thought it is worth sharing. The beauty of ebikes is there is a second source of motive power and that is your pedal power. It talks about the very basic principle about ebike motors. Here , it relates to a hub motor but the principle is still the same for the smaller mid drives. The road speed on the chart is just changed to cadence on mid drives. First, the power (watts) that comes out from the battery does not completely translates to actual watts to the wheels. There is a certain speed at which the conversion to mechanical power (motor efficiency) is highest.

In this example, the motor efficiency is highest at speeds somewhere between 25-31 mph. The lower the speed, the less efficient is the motor.

Those watt meters on some ebike displays do not always represent the watts to the wheels but these are the wattage that came out from the battery. And if you are on the wrong speed, most of those watts are wasted as heat. Or if you are in the wrong cadence in the case of mid drives.

To minimize energy waste at lower speed, a controller is used to limit the max current.

In the old days, simple resistors were used to control the current but these are very inefficient and obsolete and are now replaced by pulse width modulation controllers (PWM) with the use of metal–oxide–semiconductor field-effect transistors (MOSFET). The electrical current is then controlled to different levels. Example of this simple controller with different current settings at different assist levels is from a chart from Bafang mid drive (cadence is used at the x axis instead of road speed). The orange curve represents 100% (current decay is another user adjustable parameter in the Bafang controller)

https://electricbike-blog.com/2015/06/26/a-hackers-guide-to-programming-the-bbs02/

However, it is also important to know the power demand of an ebike at different speeds brought about by many factors and most especially the air resistance (aerodynamic drag), in order to further minimize power wastage when it is not needed and only apply power to when it is really needed.

You don't really need a lot of power at low speed but a simple controller's output is opposite (Cheap Chinese controllers). No wonder the cheap ebikes and ebike kits cannot reliably provide good battery mileage since you thought you are saving battery by going slower but you actually wasted a lot of power there. Most of the time, I notice that simple controllers feel "punchy" and tend to lurch ahead from a dead stop (great for showing off to friends) but once the ebike is already moving and you needed more assist, sometimes the power isn't there anymore, when you needed it the most.

Enter the Smart Controllers from the big players where more brain capacity is added to the controller's program in order to determine and match power requirement with the power output of the motor. And added measures are incorporated to cut the assist if the motor speed is at the inefficient range. This is made possible with the use of torque sensors and sophisticated program algorithms. An example of this is the "dynamic assist" from Juicedbikes.

http://juicedbikes.com.au/bikes/2017-crosscurrent/

I cannot find the controller charts of other big players but that is understandable (trade secret). It only goes to show that it's not only the motor efficiency that is important but how sophisticated the controllers are made. Not all controllers are created equal.

On mid drives, the gear reduction ratio is also set up so that the motor is most efficient at a cadence rate preferred by most cyclists (normal cadence range) .

https://www.electricbike.com/bosch-cannondale/

This principle in actual application made it possible for a small motor (mid drive) to achieve a very very impressive efficiency of 100 miles in 1 charge of the 500wh battery or 5 wh/mile!
https://electricbikereview.com/forum/threads/range-100-miles-giant-road-e.14617/#post-121767

This highest mileage potential is demonstrated by the small mid drive, but at a slower average speed. The mid drives also has an advantage for the ability to climb very steep hills, as long as the gear ratio in the drive train is appropriate, but at the expense of even much slower, snail paced, speed (sometimes it feels like being pulled up by a winch!).

However, hub drives are not far behind. Especially with increasing sophistication of the controllers and more efficient motor designs like the Maxon.
http://partir-en-vtt.com/fsb2/index.php?p=search&mode=author&id=52

https://electricbikereview.com/forum/threads/hub-vs-mid-drive-how-can-i-compare.14635/page-5

Hub drives are also more appropriate for high speed commuting, such as riding regularly at higher average speeds (above 23 mph) since the bicycle drive train at that higher crank output will wear out prematurely in less than a couple thousand miles. Or for transporting heavy loads such as the delivery ebikes.

There is still a bright future for efficient hub drives since, aside from the above mentioned strengths, hub drives are also very user friendly, preserve the life of the drive train (high durability), and is superior in stop and go city streets.

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harryS
3 days ago

Sorry, I am very new to this ebike thing. Is it possible to run an ebike (say a bbso2 mid drive) off a 36v battery with only 2.6ah? We are moving to europe but I would like to build the bike before we go since it needs to be adapted to carry a dog too..

FYI. While cleaning out my garage and swapping the lawnmower for the snowblower, I decided to do some science. No, a 750W BBS02 kit from Lunacycle will not run on 36V. Even fully charged at 42 volts. the Ryobi isn't enough, It might be possible to use the progamming cable and a PC to set the motor up for 36V, but I don't have the cable, electing not to mess with that stuff.

However, I do have a 12volt, 9 cell lithium battery that I added in series to the Ryobi. I took it around for a half mile. The combo was able to push out 20A peak current. I didn't think the Ryobi could do that. With the regular battery, the motor will draw 25A, SInce the Ryobi was never intended to push those current levels, you'll have a short range ride and eventually ruin the battery.

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harryS
4 days ago

Sorry, I am very new to this ebike thing. Is it possible to run an ebike (say a bbso2 mid drive) off a 36v battery with only 2.6ah?

I have the 80WH and 180WH Ryobi lawn batteries. They are called 40V batteries, but they're a typical 36V lithium battery with 10 cell groups.

I've never tried my BBS02 on a 36V because I thought it's programmed to shut down at 42-43 volts,. A fully charged Ryobi tool battery is 42 volts.

I did rig up a harness/connector and have played around with it on my other ebikes.

It runs my 250W motor. I have gotten about 11 miles at 13 mph with the 80 WH unit. Pedal assist. My wattmeter said 2.3 AH, which matches the advertised capacity of the battery. I typically get around 5 miles per AH, no matter what battery I use at 13 mph.

On a bigger motor, like 500W, the batteries will shut off if I use the throttle. Too much current draw (25A controller). They will run the bike in pedal assist though. I would guess 8 miles is possible in pedal assist on the bigger motor at the same speed. The 80WH battery, while it has less capacity, doesn't rest under throttle as badly as the 180WH model.

I would say it's not a good alternative, unless you already had some Ryobi tools you were already using. It's not really a good alternative to an ebike battery. and I don't believe it's in the spirit of the airline rules, It's a weedwahcker, chainsaw battery, Can't bring a chain saw on an airplanae,

1/1
bob armani
1 week ago

Where do you live? The Lunacycle BBS02 is on sale for $400 (mid drive.) Has throttle, up to 9 level pedal assist and a LCD display that gives speed, battery status, and power used. A $500 battery and you can climb any hill, A little more work to install than a Hilltopper, but the latter is pretty simple. Compared to a better hub motor where you have to remove the pedals for pedal assist, the BBS02 is comparable effort.

The Hilltopper is OK, but no pedal assist which I think is a major drawback. Front motor is OK, but I'd rather see it on the rear. .

I own both types of ebike BBS02 mid drive and hubmotor. I like them both, but there are no 1000 foot climbs where I live.

Agreed Harry. I too only ride a rear hub driven 350 watt ebike and it far exceeds my expectations on any high bridge or incline I have had to climb here in the Midwest. It is so efficient, it can climb any grade effortlessly in the lowest gear. I cannot compare to a mid-drive, however, my best guess is that the results would be just as impressive.

harryS
1 week ago

Where do you live? The Lunacycle BBS02 is on sale for $400 (mid drive.) Has throttle, up to 9 level pedal assist and a LCD display that gives speed, battery status, and power used. A $500 battery and you can climb any hill, A little more work to install than a Hilltopper, but the latter is pretty simple. Compared to a better hub motor where you have to remove the pedals for pedal assist, the BBS02 is comparable effort.

The Hilltopper is OK, but no pedal assist which I think is a major drawback. Front motor is OK, but I'd rather see it on the rear. .

I own both types of ebike BBS02 mid drive and hubmotor. I like them both, but there are no 1000 foot climbs where I live.

Ed Busk
2 weeks ago

Hi, Ed here, owner of Sleek eBikes in Tarrytown. I have a Bafang BBS02 running 1.3KW and access to all sorts of Bulls machinery plus loads of other stuff. I always recommend potential customers ride a Brose vs a Bosch back to back. Some people love one some love the other.

Some points to note: The Brose gives tremendous torque at very low RPM, much more than the Bosch CX Performance. The Bosch then kicks it's butt once you get up to speed. (Power output seems at 350 Watts for the Brose vs up to 540 for the Bosch - see other posts on this site.) The Suntour HESC blows them both away. Think of the Brose as a torquey diesel vs a revvy sports car. The Bulls can also go into safe mode - where it feels very slow.

Agree with the comments above that the Brose is much more like riding a conventional bike vs the Bosch which really feels motorized. Also if you slow down, change down, and keep a steady relaxed cadence the Brose will climb any hill with very little effort. Push hard on the Brose and it feels super flat. Kick back and roll along and it feels like the power goes up. Almost like heavy torque causes the motor to cut back output...exercise mode!

The Das Kit 500W on the Magnums should get an honorable mention too. Great system for the money.

The Bafang's efficiency is way less. At about 900W it feels the same as the Bosch at 540. Beyond that it's great for short bursts - but it empties the battery and gets very hot! Bosch quotes 92% efficiency, Brose high 80s. Bafang doesn't say but I'd guess 70. My Bafang motor's battery is noticeably dying at 2 years too...maybe how I set the parameters. Food for thought.

harryS
2 weeks ago

Hey Harry, can you tell me what kit and battery you recommended?
Thanks

I'm in a different position than Rich Speicher who needs to provide a reliable/robust system for his customers, and a BBSHD is certainly that. On the other hand, one can melt a BBS02, but it's still a good motor for $400. Add a battery for $400-500. Good kit., but my siblings don't need 750W power. We didn't test ride my BBS02.

They tried my Q100H geared motor and my 500W ebikeling 36V geared motor kit. The latter is available for under $200 on ebay from vendor "ebikeling." when he has them in stock. I've bought two of them. Per my logs, I have over 1000 miles on one. Forum user Indianajo might disagree. He posted that his blew up after a month and he left it at his summer camp. Anyway, I'm watching ebay and will maybe snag another one this winter. It's about 18-20 mph on 36V. I shouldn't do it, but I will run it at 48, but then I don't get any exercise. Too fast.

The Q100H and Q128H are also well regarded motors from BMSbattery.com. Cost about $79, but come from China with a stiff shipping fee of $60. Then I have to buy a rim and spokes. Also a controller. Runs up to $260 by then.

My first battery was a 36V bottle battery off ebay from China for $280 shipped. That vendor no longer sells on ebay, but still sells batteries under the name pswpower.com. I have since purchased his controllers, but not his batteries. I've have been wanting smaller batteries so my ebikes look less like ebikes. I have a lunacycle.com mini. It's only 6AH, but that gives me 20-25 miles which is all I need. Under $300. I also had a nice 36V 10AH battery built in Florida for $250 earlier this year, but the seller (batteryblocs.com) appears to have dropped that sideline. Personally, I'm willing to buy batteries from China, but it's probably safer to order from a US vendor like lunacycle.com.

bob armani
2 weeks ago

Successful conversion/build of the Giant Talon 3 29r with the Bafang BBS02. I bought the centerdrive from Bafang USA Direct (called and spoke to them prior to buying centerdrive).

Very happy to report this was an easy conversion. I had the dealer remove the bottom bracket for me.

I opt'd for the 44 tooth chain ring sprocket. My goal was stronger pull, more torque. Having said that the bike easily runs up to over 25 mph (I've had it over 30 mph flat, paved surface with moderate-strong pedal input.

I didn't realize I'd have to break the chain to remove the front derailleur. Recommend having the dealer take care of that piece of the project although, it wasn't hard. I bought the Park 'mini chain tool' and a KMC Chain Link from my dealer. Actually, very easy to accomplish and now if I have a chain problem I'll be better equipped to tackle it.

One area I did have to think about was how to mount the hydraulic brake sensor. After a little 'testing' to understand how the circuit is broken it was pretty easy to come up with a suitable mount. The sensor is mounted to the brake body and the magnet mounted to the lever. I used the provided double sided tape to mount it and used hot glue to secure it. I was going to use JB Weld. The hot glue method has held up just fine. No reason to re-address at this point.

I bought the bike for about < $600 and the center drive kit for < $800. Total < $1400.00
Bottom line - really enjoy this bike!
Successful project.

Falcon-Really nice build on your Giant! Congrats on your new ride. Looks like you are going to kick some ass with this for only $1400 bucks. Love that work platform too. Ride safe!

Falcon1az
2 weeks ago

Successful conversion/build of the Giant Talon 3 29r with the Bafang BBS02. I bought the centerdrive from Bafang USA Direct (called and spoke to them prior to buying centerdrive).

Very happy to report this was an easy conversion. I had the dealer remove the bottom bracket for me.

I opt'd for the 44 tooth chain ring sprocket. My goal was stronger pull, more torque. Having said that the bike easily runs up to over 25 mph (I've had it over 30 mph flat, paved surface with moderate-strong pedal input.

I didn't realize I'd have to break the chain to remove the front derailleur. Recommend having the dealer take care of that piece of the project although, it wasn't hard. I bought the Park 'mini chain tool' and a KMC Chain Link from my dealer. Actually, very easy to accomplish and now if I have a chain problem I'll be better equipped to tackle it.

One area I did have to think about was how to mount the hydraulic brake sensor. After a little 'testing' to understand how the circuit is broken it was pretty easy to come up with a suitable mount. The sensor is mounted to the brake body and the magnet mounted to the lever. I used the provided double sided tape to mount it and used hot glue to secure it. I was going to use JB Weld. The hot glue method has held up just fine. No reason to re-address at this point.

I bought the bike for about < $600 and the center drive kit for < $800. Total < $1400.00
Bottom line - really enjoy this bike!
Successful project.

1/6
LimboJim
3 weeks ago

Thanks Limbojim,

I have ridden a BBS02 converted bike and while it did have a ton of speed and power it was not refined and easily controllable in singletrack as you mentioned. That is why when I converted my commuter I chose a small Q128 hubmotor from BMS. I wanted a bike under 40lbs that still felt like a bike. Also on the off chance I lose power I wanted it to not have too much drag and the geared hubmotos hardly have any. I pedaled my dads BBS02 bike and it was abysmal to pedal with all the drag. I did pedal the All Mountain 7 with the motor off and it was even worse than the BBS02. I had read the shimano system pedals a bit better and the Brose system completely decouples. Some of the points newfydog mentions sound good and also seems the shimano bikes batteries are a bit less then the Bosch. I do like that you have experience on both so that puts the All mountain 7 more on top for me and if needed I can take the money I save on the used All Mountain 7 to buy an extra battery one day.

I will think this all over and do more research over the holiday.
Have you had to ride ebikes with no power often? I've got ~3-4k trail miles (mostly) on several eMTBs now, and can count the number of times I've had to pedal them unassisted on one hand. Maybe I've been lucky or don't ride as far or long as some folks, but Bosch/Yamaha motor/battery reliability has been very good, in my experience.

I do, however, seem to wear chains and brakes out quickly - there are some steep hills in my State Park backyard! Recently I've been keeping my KMC ebike chains cleaner and better lubed, and started using metallic pads, which seems to help extend their lives.

Good luck - I look forward to reading about your final decision!

Marc Webster
3 weeks ago

I haven't experienced the latest eMTB-specific Bosch CX, Yamaha PW-X or Brose-S motors, so I can't compare them to the E8000. I do own three Haibikes (2014 Xduro FS RX, 2015 Xduro rx29 & 2016 Sduro AllMtn+) however, and will say that the overall build quality and finish on all three are noticeably superior to my 2018 Motobecane eBoost Pro (pivots, motor bash guards, PAINT etc.). So I'd jump on that deal for the "lower-specced" Haibike AllMtn 7.0; I think you might be happier in the long run (you can always upgrade componentry later).

I have ridden a BBS02-fitted Biktrix offroad extensively, as well, and the low overhang sent me flying off the bike when I tried to clear a 4-5" log that every other MTB or eMTB I've ever ridden cleared with ease. Also, IMO, Bafang's power is far too binary, and it's way to torquey at its lowest assist level for traversing technical singletrack. The lag time after pedal disengagement is also a liability on tight turns etc.
Thanks Limbojim,

I have ridden a BBS02 converted bike and while it did have a ton of speed and power it was not refined and easily controllable in singletrack as you mentioned. That is why when I converted my commuter I chose a small Q128 hubmotor from BMS. I wanted a bike under 40lbs that still felt like a bike. Also on the off chance I lose power I wanted it to not have too much drag and the geared hubmotos hardly have any. I pedaled my dads BBS02 bike and it was abysmal to pedal with all the drag. I did pedal the All Mountain 7 with the motor off and it was even worse than the BBS02. I had read the shimano system pedals a bit better and the Brose system completely decouples. Some of the points newfydog mentions sound good and also seems the shimano bikes batteries are a bit less then the Bosch. I do like that you have experience on both so that puts the All mountain 7 more on top for me and if needed I can take the money I save on the used All Mountain 7 to buy an extra battery one day.

I will think this all over and do more research over the holiday.

harryS
3 weeks ago

If I compare my geared hub motors to bike hubs off the bikes, it takes more force (a lot more!) to turn the axle with the fingers with a motor. With the wheels mounted, when I spin the wheels by hand, the plain hub might spin 5-6X longer than the motor, but the motor will spin for 10-15 seconds. An all-out comparo done by physics students would indeed show a plain hub coasts further. However, in an actual riding situation, the drag is negligible on coasting. Tire size, tire pressure, and wind are more important. If you can, test ride the bike.

I'm more concerned about how easy my bikes are to pedal un-powered. My geared hubmotors and my BBS02 pedal pretty nice. I did test ride a Stromer and Evelo ebikes with direct drive motors last summer. The Stromer rep warned me that level 1 pedal assist was just enough to overcome the motor drag, but I found both bikes on my test ride fairly easy to pedal with no power. I liked them. These are smaller motors. I've read that the big 1000-3000W direct drive kits are very hard to spin.

I am not a strong pedaler at all, by the way, but I have a 55 pound fatbike with motor that I don't mind pedaling unpowered at about 10 mph on level ground. With its original tires, I could barely move it. It's all about tires.

LimboJim
3 weeks ago

Hello All,

First post here.

I am currently commuting on an electric bike that I made by adding low power hubmotor (Q128 from BMS) and it works so well I now want to replace my 2008 Specialized FSR 29er with an electric bike. I test rode the Haibike all mountain 6.5 and 7, Specaialized Revo and the Giant. I was considering converting my FSR that I own with a BBSHD and using my commuter battery but don't want the liability of a motor hanging below. Now I see Motobecane has made what looks to be a really nice bike. I have no familiarity with the Shimano E drives but did find I liked the Bosch over the Yamaha. Before finding the Motobecane I was pretty much settled on the 2017 All mountain 7 and my LBS has it for roughly 3800 out the door so its very similar in price to the Motobecane. Yet the motobecane is better specked and unsure if i want ot take the chance site unseen and no demo ride when I know I like the All mountain 7.

If anyone on here has experience with the bike vs Haibike I would love to hear it. Also a Bosch CX vs Shimano comparison. Limbojim would love more info...

Also I want a PAS type bike over the high powered Luna bikes as I want to keep the bie fele over more the motorcycle feel. Not ot put down what they are doing s I think its amazing but for my Mtn biking tastes I only want some help in climbing mostly...

Thanks,

Marc
I haven't experienced the latest eMTB-specific Bosch CX, Yamaha PW-X or Brose-S motors, so I can't compare them to the E8000. I do own three Haibikes (2014 Xduro FS RX, 2015 Xduro rx29 & 2016 Sduro AllMtn+) however, and will say that the overall build quality and finish on all three are noticeably superior to my 2018 Motobecane eBoost Pro (pivots, motor bash guards, PAINT etc.). So I'd jump on that deal for the "lower-specced" Haibike AllMtn 7.0; I think you might be happier in the long run (you can always upgrade componentry later).

I have ridden a BBS02-fitted Biktrix offroad extensively, as well, and the low overhang sent me flying off the bike when I tried to clear a 4-5" log that every other MTB or eMTB I've ever ridden cleared with ease. Also, IMO, Bafang's power is far too binary, and it's way to torquey at its lowest assist level for traversing technical singletrack. The lag time after pedal disengagement is also a liability on tight turns etc.

roshan
4 weeks ago

Can these be ordered and what would the price be? Is that a BBS02 or BBSHD? And what battery would be used and where mounted ?

The other folder I was looking at is http://scooteretti.com/product/tern-vektron/. but at $4400Cdn, a little pricey.
It's going to be about $2600 CAD :P

Falcon1az
4 weeks ago

Decided to buy from BafangUSAdirect. Called and talked to Kevin (if I remember his name correct). Big part of this experience was to be sure I had a chance to speak to someone. Great guy and answered all my questions. I ordered the bbs02 on Thursday the 9th and it got here Monday the 13th (shipped from CA to IL). Super fast!

Falcon1az
1 month ago

I want to ask if any users have experience with this online retailer? They certainly have as good a price on the BBS02 package kit as I have been able to find.

https://bafangusadirect.com

JayVee
1 month ago

I was wondering if you could comment on how the drive responds with respect to the smaller front gears that are designed for more spinning.

I need to build an e-bike for someone with a slight disability that sounds similar to that of your wife. She still rides bikes but can't make the 1 mile climb to the grocery store. The idea is to favor 'spinning' rather than applying force/torque to the pedals. I was thinking of mounting a BBS02 on her bike, but now that I read this thread I'm wondering if the red wheel might not be a good option as well.

sexton Tom
1 month ago

Just my $.02. I am an ebike technician and builder of custom ebikes. I have ridden almost everything in the ebike world. I own several BBSHD's and for my money I would buy another. Pedal assist and throttle, no torque assist. I my opinion torque assist is highly overrated. I've ridden the Bosch Haibike and the Bulls bikes. I find I prefer the pedal assist, and I wouldn't have a ebike without a throttle, to many times that instant full acceleration can save you in traffic. Not only that but a throttle makes hills melt away. I live at the top of a 22% grade, after a 50 mile bike ride it sure is nice to hit the throttle and fly to the top! Also there have been many reports of reliability issues with both the BBS02 and the Tong Sheng when used on big hills with heavy loads. I've yet to kill a BBSHD!

Agree,Agree with the throttle. Could literally save your life in the right situation. Rick , could you recommend a nice geared hub motor for a women's crank forward bike. It would be ridden by both girl and guy in State parks and campgrounds. 20 - 25 mph plenty. Would need to climb some small to moderate hills. Thanks !

WilliamT
1 month ago

I've been in the market for an entry-level ebike and I've been watching the forms and searching online visiting local bike dealers.

I have come across two bikes that seem to be the same, just different names.

The Mangnum Mi5
https://www.magnumbikes.com/portfolio-item/magnum-mi5/

And
The Spark
https://gosparkbikes.com/products/spark-mss2

The specs are the same it warranty the same just one is $700 less (USD)

Is the local bikes shop experience worth the $700?

Thanks

I never heard of Spark bikes. The only big difference I see is the 48v motor one Spark vs a 36v 13ah battery. You'll get better acceleration on the Spark but your range is going to be much shorter than the Magnum. I have a 10.4ah battery and the range isn't that good. I get around 28 miles on a 48v kit and that's running Level 2/5 which puts out about 200 watts. I also have a 36v 13.6 ah geared hub kit and that gives me about 45 miles of range using similar assist.

The hardtail is a different animal entirely. The BBS02 mid drive is going to provide much more power 750w-1000w. If you like to shift, then the gear hub will work better. Shifting on the mid drive takes some technique if you don't want to mash the gears. There are solutions out there but nothing I think is really as good as having assists that don't depend on the chain.

Deafcat
1 month ago

Can these be ordered and what would the price be? Is that a BBS02 or BBSHD? And what battery would be used and where mounted ?

The other folder I was looking at is http://scooteretti.com/product/tern-vektron/. but at $4400Cdn, a little pricey.

BBSHD on a tiny carbon folding bike = no bueno! hahaha

pretty sure its BBS02B

Fred
1 month ago

Can these be ordered and what would the price be? Is that a BBS02 or BBSHD? And what battery would be used and where mounted ?

The other folder I was looking at is http://scooteretti.com/product/tern-vektron/. but at $4400Cdn, a little pricey.

itsaulgoodman
1 month ago

Just my $.02. I am an ebike technician and builder of custom ebikes. I have ridden almost everything in the ebike world. I own several BBSHD's and for my money I would buy another. Pedal assist and throttle, no torque assist. I my opinion torque assist is highly overrated. I've ridden the Bosch Haibike and the Bulls bikes. I find I prefer the pedal assist, and I wouldn't have a ebike without a throttle, to many times that instant full acceleration can save you in traffic. Not only that but a throttle makes hills melt away. I live at the top of a 22% grade, after a 50 mile bike ride it sure is nice to hit the throttle and fly to the top! Also there have been many reports of reliability issues with both the BBS02 and the Tong Sheng when used on big hills with heavy loads. I've yet to kill a BBSHD!

I can appreciate you have your preference. Thing is, many jurisdictions are going the route of pedal assist only. It seems that the line is getting drawn at whether you have to pedal or not. Where I live, ebikes with a throttle are not allowed on pathways.

When you say you prefer the pedal assist vs torque sensing, do you mean the cadence sensor that the BBSHD uses? I'll admit, I haven't tried one. So far I've only ridden bikes with the typical Bosch, Brose, Yamaha integrated motors, and the Tongsheng kit I installed on the Mundo.

Rick Speicher
1 month ago

Just my $.02. I am an ebike technician and builder of custom ebikes. I have ridden almost everything in the ebike world. I own several BBSHD's and for my money I would buy another. Pedal assist and throttle, no torque assist. I my opinion torque assist is highly overrated. I've ridden the Bosch Haibike and the Bulls bikes. I find I prefer the pedal assist, and I wouldn't have a ebike without a throttle, to many times that instant full acceleration can save you in traffic. Not only that but a throttle makes hills melt away. I live at the top of a 22% grade, after a 50 mile bike ride it sure is nice to hit the throttle and fly to the top! Also there have been many reports of reliability issues with both the BBS02 and the Tong Sheng when used on big hills with heavy loads. I've yet to kill a BBSHD!

JRA
1 month ago

You can get a BBS02 setup from Luna like on that bike for $750 and the KHS Alite is a $600 bicycle. They are charging $250 to put the two together and as indicated a small warranty period but the BBS02 is pretty well proven at this point and easily upgradeable in the future. The bike itself is not that great component wise but serviceable at any bike shop.

mahady arian
6 days ago

How can i get this setup?

Samuel Rees
3 months ago

Awesome! I'm looking to convert a KMX trike like this too. I have a question - is it possible to trigger the motor via a throttle lever instead of the cadence sensor?

Degimedia HD
2 months ago

yes

Computerface
4 months ago

Unsubscribed for censoring comments.

Kaywood Parsons
4 months ago

Bosh and othr factory installs dont even compare torque wise to the Luna cycle motors. It's been tested trying to carry a 300 pound man. the factory bikes wouldnt even move uphill. the Luna cycle carryed him up the hill at 26kh

李腾
4 months ago

Does it drove by two system? throttle with rear motor,and PAS with centermotor right?

I Had To Make This Account
5 months ago

Is this a re branded ERad? Or are they actually different?

Vincent Barkley
5 months ago

100% of the weight is unsprung as there is no suspension.

Don Mega
6 months ago

it isn't without it's problems. but it is also the best ;) you can reprogram it with a $20 usb cable. set the delays etc, or to set mode 0 into throttle only as well. it's really easy to get used to gear switching, or you can buy a gear sensor which cuts the power to motor for a worry free smoother gear changes.

Wayne Rhea
6 months ago

they sell these for under 400 on eBay.

Wayne Rhea
6 months ago

so I have a 1000w hub would this be faster than the that .

SegaStation
6 months ago

Awesome video mate - after watching this, I've bought the kit

Trey Souder
7 months ago

Where is the controller on the bike in this video?

Aqua Gods
7 months ago

Recommend Juiced air or this on my Schwinn mountain bike?

Andrew Stewart
8 months ago

I've worked with the Bosch and shimano steps motors, and they dont have all the sensors. they simply detect the torque coming in thru the cranks, and then just add a multiplier to it. no brake sensing etc, doesnt need it.

its so intuitive, I could do mad wheelies straight away with it

Joe N
9 months ago

Brother I'm impressed! Does this sell in Canada? Being an older mountain biker, my legs ain't young anymore. This would be an advantage riding say up the Niagara Escarpment where its a long hill. What's the price if I could ask?

Ben Adriance
10 months ago

Where did you say you could get this kit?

Paul Wood
11 months ago

Top speed on a flat, with rider peddeling (lets say 200w of human power)??

Tforce Sims
1 year ago

Do kits automatically come with a battery?

Jaime Magana
1 year ago

Two things i'm interested in with e-bikes- Top speed and Range.

nicolas vago
1 year ago

Hi , could you please tell me the autonomy without pedalling? thank you very much