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  1. BigMatt

    72v 3000w BLDC motor kit and 36v batteries in series problem

    I suspect your 36 volt batteries are limited well below the ~42 AMPs required to power 3000 Watts (72V x 41.7 AMPs ~5,000 Watts). While you double your volts running in series, the AMPs are constrained by the minimum AMPs put out by either of the two batteries. I don’t think there are many...
  2. BigMatt

    kit questions?

    What’s the use case? City commute, off-road, portability (folding), distance, etc.? Build vs buy? Are you mechanically inclined? If you’re not capable of building, repairing or servicing your own ebike, you probably should buy from your closest e-bike shop.
  3. BigMatt

    kit questions?

    Hi Harry, Long time no speak. Just to add to the build v buy concept, I think if you need a bike to fold (throw in the trunk or keep in a closet), the efficacy of buying over building makes sense as building a folding ebike could be challenging. I’ve thought about building a custom folding...
  4. BigMatt

    STILL TRYING TO MAKR WIRK !

    I bought the joysi one for my brother-in-law who built a 1200 Watt Kit, so I know that works: Joyisi 52V 14AH / 48V 12.5 Ebike Battery for 1500W / 1000W Bike Motor, Lithium ion Bike Battery with Charger, USB Port, BMS Protection Board and Battery Level Light...
  5. BigMatt

    How does one sell an eBike?

    I sold one on Craigslist. I asked the gentleman who test road it to let me hold his drivers license as collateral while he road it.
  6. BigMatt

    Ecotric 20" Folding Fatbike

    I have the rack (link below) and can confirm it’s very sturdy as far as bike racks go, but I don’t have any specs on it. https://www.ecotric.com/collections/fenders-rack/products/rear-rack-for-20-fat-tire-folding-electric-bike
  7. BigMatt

    STILL TRYING TO MAKR WIRK !

    That’s a good looking bike. The following is my Ebikeling kits: 1) 1200 Watt fat (26 inch) bike front and rear hubs. 80 AMP hours, but configurable to 120 AMP hours (if I add more batteries to front bag). Bike name is Weapons Grade... Great for Midwest winter riding, city commuting with...
  8. BigMatt

    Ebikeling 1200w rear wheel kit from Amazon

    Oh, I definitely hit overkill a while ago on Weapons Grade. My Trek 700c EBike is the practical bike. Weapons Grade is an ongoing experiment (in insanity). I might enjoy the process of building and tweaking ebikes even more than riding them. (If I cared about battery life efficiency, I’d...
  9. BigMatt

    Ebikeling 1200w rear wheel kit from Amazon

    Mine usually hits pretty quick. Maybe a quarter to half a crank. I generally use throttle to get moving from a dead start then pedal from there.
  10. BigMatt

    Ebikeling 1200w rear wheel kit from Amazon

    I actually have given real thought to doing that. I’ll know I’ve lost my mind completely when I order the midrive kit. At that point, 80 Amp hours might only get me 20 miles... but I’d get there fast.
  11. BigMatt

    Ebikeling 1200w rear wheel kit from Amazon

    I think by setting P08 (see link for directions) to 32 KMH will essentially cap you out at 20 MPH assist whether you’re on setting 3, 4 or 5. 1 and 2 (and maybe 3) will be slower. On the Ebikeling Kit, the 1-5 settings apply to both the throttle and PAS. You can also adjust it so you can turn...
  12. BigMatt

    Ebikeling 1200w rear wheel kit from Amazon

    I don’t know if the bafang cable works with it, but the ebikeling kit display panel (for the 1200 or 1500 W kits) allow you to program the stop speed in KM/H. Set it to 32 KM/H (20 MPH) and it will stop helping you there. (I usually set it to 100 KM / Hr for no limit other than motor limit)...
  13. BigMatt

    Ebikeling 1200w rear wheel kit from Amazon

    The most important factor on my traffic-heavy commute seems to be how many red lights I hit or not. On my faster bike, I spend more time at red lights than my slower (with less torque) bikes, but my overall commuting time doesn’t change much. On non-rush hour more open-road stretches it...
  14. BigMatt

    Ebikeling 1200w rear wheel kit from Amazon

    Let’s face it. If I’m riding an EBike in downtown Chicago rush hour traffic, I have to be pretty risk tolerant. (And a $5 million umbrella liability policy I own helps. #moralhazard. Although chances are any meaningful accident I cause makes my life, health and disability’ insurance more...
  15. BigMatt

    Ebikeling 1200w rear wheel kit from Amazon

    Sorry if I came on a little strong. Allusions that I might be committing fraud or being a poor role model for my children do that. That being said, your use of pronouns made it implicit rather than explicit, so I’m only implicitly offended. 😉 By the way, Chicago city government and the...
  16. BigMatt

    Ebikeling 1200w rear wheel kit from Amazon

    I would think that it’s my bike and I can put whatever stickers I want in it. I could put a WORP drive sticker on it or a Millennium Falcon sticker on it and that would not make anything fraud. (There is no requirement to label any motor in my state as far as I know.) You have far more...
  17. BigMatt

    Ebikeling 1200w rear wheel kit from Amazon

    Better? This has “Made in China” on it too. That means it’s much more likely to be authentic! 😉
  18. BigMatt

    How do you lockup your ebike

    My chain locks aren’t great, but I pair them with this thing as a main deterrent. If the bike is moved a millimeter while armed, the siren goes bonkers. It works exceptionally well. It gives a loud warning chirp first if nudged. If moved again in a few seconds, it goes bonkers for 30-60...
  19. BigMatt

    Looking for a folding ebike

    Another not on your list to consider. It’s 53 pounds, but The x-treme epic mini is good and compact. With 8 AH, you have a fighting chance at 20 mile range at your weight. I’m 6’3” and 220 and gauge my throttle-only (or pedal very little) range in the 16-18 mile range. Front and rear...
  20. BigMatt

    Donor bike for rear hub motor

    Also, my (1,200/1,500 Watt, 700c, 26 inch and 26 inch fat bike kits) Ebikeling kits all came with a separate cassette that had to be screwed on to the provided wheel/hub. You could likely just screw something like this (8 gear cassette) on instead if you can’t the cassette off the rear wheel of...