ProdecoTech Scorpion 27 Review

Prodecotech Scorpion 27 Electric Bike Review 1
Prodecotech Scorpion X 1
Prodecotech Scorpion X Rear Derailleur 1
Prodecotech Scorpion X Pedal Assist Buttons 1
Prodecotech Scorpion X Lithium Battery Pack 1
Prodecotech Scorpion X Led Mini Console 1
Prodecotech Scorpion X Keyde Lithium Battery Bottle 1
Prodecotech Scorpion X Friction Drive Motor 1
Prodecotech Scorpion X Console Cockpit 1
Prodecotech Scorpion X Avid Hydraulic Disc Brakes 1
Prodecotech Scorpion 27 Electric Bike Review 1
Prodecotech Scorpion X 1
Prodecotech Scorpion X Rear Derailleur 1
Prodecotech Scorpion X Pedal Assist Buttons 1
Prodecotech Scorpion X Lithium Battery Pack 1
Prodecotech Scorpion X Led Mini Console 1
Prodecotech Scorpion X Keyde Lithium Battery Bottle 1
Prodecotech Scorpion X Friction Drive Motor 1
Prodecotech Scorpion X Console Cockpit 1
Prodecotech Scorpion X Avid Hydraulic Disc Brakes 1

Summary

  • Extremely light weight hardtail electric bike with 27 speeds and an efficient friction drive motor
  • Keyde drivetrain blends in, motor is very small and battery is shaped like a water bottle
  • Pedal assist only (no throttle mode), includes a bicycle computer to show speed, distance, battery etc.

Video Review

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Introduction

Make:

ProdecoTech

Model:

Scorpion 27

Price:

$3,999 USD

Body Position:

Forward

Suggested Use:

Urban, Commuting

Electric Bike Class:

Pedal Assist (Class 1)
Learn more about Ebike classes

Warranty:

2 Year Comprehensive, 30 Day Replacement

Model Year:

2014

Bicycle Details

Total Weight:

38 lbs (17.23 kg)

Frame Material:

Aircraft Grade Aluminum Alloy

Frame Types:

High-Step

Frame Colors:

Black with Red Accents

Frame Fork Details:

RockShox Recon GOLD with 120 mm Travel and Lockout

Attachment Points:

Bottle Cage Bosses (Used for Battery Holder), Rear Rack Bosses, Fender Bosses

Gearing Details:

27 Speed 3x9 SRAM X9, 11-32T

Shifter Details:

SRAM XO Grip Twist on Left and Right Bar

Cranks:

Truvativ Firex GXP 44/ 32/ 22 170

Pedals:

Cheetah CNC Sealed Bearing

Headset:

CNC Sealed Bearing

Stem:

Truvativ AKA 5º 100 mm

Handlebar:

Truvativ Stylo T20 Riser 680 mm

Brake Details:

Avid DB Hydraulic Disc

Grips:

Leather with Alloy Lock Rings

Saddle:

Velo Plush Sport Vented

Seat Post:

Truvativ Stylo T20

Seat Post Length:

350 mm

Seat Post Diameter:

31.6 mm

Rims:

Double Wall 26 mm

Spokes:

18/8 Black Stainless Steel 13G

Tire Brand:

Continental Contact 26" x 1.75"

Wheel Sizes:

26 in (66.04cm)

Accessories:

37.8V 3 Amp Charger

Other:

Removable Battery Pack, Ultra Light SR300 Friction Drive Motor by Keyde with 160-260 Revolutions per Minute and ~86% Efficiency

Electronic Details

Motor Brand:

Keyde

Motor Type:

Rear-Mounted Geared Hub
Learn more about Ebike motors

Motor Nominal Output:

250 watts

Motor Peak Output:

350 watts

Battery Brand:

Panasonic

Battery Voltage:

33 volts

Battery Amp Hours:

9.3 ah

Battery Watt Hours:

306.9 wh

Battery Chemistry:

Lithium-ion

Charge Time:

3 hours

Estimated Min Range:

20 miles (32 km)

Estimated Max Range:

35 miles (56 km)

Display Type:

LED Console, Monochrome Keyde Cycle Computer

Readouts:

Battery Level, Assist Level (Five Settings), Speed, Odometer

Drive Mode:

Cadence Sensing Pedal Assist

Top Speed:

20 mph (32 kph)

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Written Review

At first glance the Scorpion 27 from ProdecoTech resembles the Titanio 29er in that it uses a Keyde drive system. These ultra light weight motors and bottle shaped battery packs blend in and keep weight low and centered but on the Scorpion the motor is rear mounted vs. front mounted and it uses a torque sensor that is much more responsive than the speed sensor on the Titanio. For me, it just rides better and the 27 speeds (verses 10 on the Titanio) can come in handy for faster riding or climbing. It’s surprising to me that both ebikes didn’t opt for the rear motor design and that the Titanio, with it’s knobby tires, doesn’t have more gears for climbing off road? Whatever the case may be, the Scorpion 27 is a bit heavier overall at ~38 pounds (still very light for an ebike) and in true ProdecoTech fashion is only available in one size and color… medium and black :)

The motor driving the Scorpion is a 250 watt geared friction drive that takes a moment to spin up compared with the larger direct drive motors on older, more traditional, ProdecoTech bikes. It’s still relatively quiet and adds a decent boost to riding but is meant to be pedaled with. There’s no throttle on this bike, you activate the motor by turning the cranks and it automatically kicks in to help out. The peak output is ~350 watts but even when it’s working at full speed there isn’t a lot of noise being produced. Given the slick tire design this motor is able to propel the bike up to 20 miles per hour depending on the terrain and how hard you pedal along.

The battery pack fueling this system offers a modest 33 volts of power and 9.3 amp hours of capacity. That’s a touch below average but considering the smaller 250 watt motor and pedal-assist only design it performs very well. I love that the battery cells are contained inside a bottle shaped enclosure. It blends in, keeps weight low to the ground and is super easy to remove. The cells inside are packed with a Lithium-ion chemistry and are made by Panasonic (one of the leading global producers). It’s a great setup but one downside is that you will need to add a second cage mount for a real water bottle somewhere else on the bike. Here are a few options that have come up in the forum.

The control panel used to activate the bike and measure remaining battery is also very well integrated and seems to disappear because it’s so small and unassuming. As soon as you plug the battery pack in and click the red button on top to activate the bike, a black display panel lights up showing a number (denoting your current level of assist) and red bars (denoting battery level). It was tricky to see in the direct sunlight at times (I had to cup my hands around it) but the small form factor might protect it from bumps and tips. It also appeared to be well sealed against water and dust. The only two buttons are a plus and minus and they let you increase or decrease the level of assist. In addition to the control interface you get a standard stem-mounted bicycle computer by Keyde that shows speed and distance and is easily removable to prevent theft and vandalism. That’s mounted in the center while the assist interface is over to the right making it easy to reach with your thumb when riding.

The Scorpion 27 is one of my favorite new bikes from ProdecoTech. While it costs more than their traditional models with larger motors and rear mounted packs I love that it actually performs well as a bicycle verses a scooter. It’s light weight, you can easily add a rear rack to actually carry supplies and the battery is simple to charge. The two year warranty is awesome and ProdecoTech builds all of their bikes in South Florida USA which is admirable. I’ve actually visited and met some of the guys and girls who assemble and service the products. This particular bike is unique because it leverages a Keyde SR300 drivetrain but given the complexity of trying to spoke one of these in yourself (and the expense of adding a RockShox with lockout and SRAM hydraulic disc brakes) it’s easy to appreciate the complete package here. The 26″ Continental tires, double walled rims and Cheetah pedals work great and make for a solid “around town” type of bike that would also be comfortable on light trails and dirt paths.

Pros:

  • 27 gears and smooth tire tread make this bike efficient to pedal when climbing or zipping around at speed
  • Uses torque sensing assist which activates faster and smoother than the speed sensor used on the ProdecoTech Titanio 29er (which also uses a Keyde motor system)
  • One of the lightest weight volume production ebikes I’ve tested at just 38 pounds (17.2 kg)
  • Excellent weight distribution with battery low and center on downtube vs. rear rack
  • Bottle style battery pack blends in with the bike and so does the small rear mounted hub motor which won’t attract unwanted attention
  • Fairly quiet operation, motor creates a high pitch whir when actively running
  • Five levels of pedal assist for extended range or power in speed in climbing
  • High end SRAM components including Avid DB hydraulic brakes
  • Solid two year warranty on bicycle, drive system and battery with a 100%, in-stock replacement parts policy
  • Diamond style frame provides plenty of room for mounting this bike on a hang-style bike rack and it’s light enough that it should work alright (you can always remove the battery to reduce weight by ~3.5 pounds)

Cons:

  • You actually have to pedal to activate the motor, this bike does not have a throttle like most other ProdecoTech electric bikes
  • The bike doesn’t come with a kickstand but the frame is fairly standard so adding one isn’t too tough
  • Motor doesn’t offer as much torque as a standard planetary geared design would for climbing
  • At this time it appears that the bike only comes in one standard size and high-step configuration

Resources:

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