Specifications
| Specification | Details |
|---|---|
| Manufacturer | Hero Eco - https://heroeco.com/ |
| Bike Web Site | https://www.f4wbikes.com |
| Model | FAST4WARD Peak |
| Model Year | 2012 |
| Price | $1,799 USD |
| Category | Mountain Bike / ATB | - |
| eBike Type | Pedelec | up to 20 mph |
| Frame type | male |
| Frame size | , |
| Weight | 46 lbs |
| Range | 37 miles * (60km) |
| Engine | |
| Engine Position | rear hub |
| Engine Power | 250 Watt |
| Assists until | 20 mph |
| Battery Type | Lithium-Ion |
| Battery Characteristics | 324.00 Wh / 9.00 Ah / 36.00 V |
| Range | 37 miles (60km) |
| Gearshift/Brakes | |
| Gearshift Type | derailleur |
| Gears | 8 |
| Gearshift Brand | Shimano Alivio |
| Brakes Type | V-Brake |
| Suspension | |
| Suspension front/rear | Yes / No |
| Tires | |
| Size | 26 x 1.75 |
Battery
Sony 36V 9Ah Lithium Ion 324 Watt Battery
10s4p 2.25Ah Lion
Capacity Test
| Capacity | Expected | Actual | Percentage |
|---|---|---|---|
| Ah | 9 Ah | 2.6 Ah | 29% |
| Wh | 324 Wh | 93 Wh | 29% |
Disassembly
New Battery
Configuration
10s4P
Layout
Batter Rebuild
New BMS
Circuit
Capacity Test
Capacity | Expected | Actual | Percentage |
|---|---|---|---|
| Ah | 9 Ah | 9.24 Ah | 103% |
| Wh | 324 Wh | 334 Wh | 103% |
Motor Controller
Specifications
| Specification | Value |
|---|---|
| Product Number | JDW41-2 |
| Voltage | 36V |
| Max Current | 15 A |
| Rated Current | 7 A |
| Low Voltage Protection | 31.5 V |
| Throttle Adjustment Voltage | 1.2 - 4.4 V |
| Width | 2 3/8" or 60.3 mm |
| Length | 3 1/2" or 88.9 mm |
| Height | 1 3/4" or 44.5 mm |
Pictures
Wiring
| Wire# | No. Wires | Wire Colors | Purpose |
|---|---|---|---|
| 0 | 3 | Green, Yellow, Blue | Motor |
| 1 | 3 | Red, Green, Yellow | HALL - Wheel Speed Sensor |
| 2 | 3 | Red, Blue, Black(GND) | PAS - Pedal Assist Sensor |
| 3 | 2 | White, Yellow | Brakes |
| 4 | 2 | White, Yellow | Brakes |
| 5 | 3 | Purple, Grey, Black(GND) | Peddle Assist Switch |
| 6 | 3 | Red(5v), Green, Black(GND) | Throttle |
| 7 | 2 | Orange, Brown | Voltage Monitor? - NOT Used |
| 8 | 1 cable - 5 wires? | Black | Display? - Not Used |
| 09 | 2 | Red, Black | Battery Power |
Internals
Wires Going to Display/Controller (No longer used)
| Wire# | Color | -> | Wire# | Color | Usage |
|---|---|---|---|---|---|
| 1 (HALL) | Green | 8 | Blue | Speed Display? | |
| 7 | Orange | 8 | Green | ? | |
| 7 | Brown | 8 | Yellow | ? | |
| BOARD | Red (36V) | 8 | Red | Power | |
| BOARD | Black (GND) | 8 | Black | Power |
Issues
Power Turns Off When Driving
Sometimes while driving the power turns off. Toggling the power switch fixes the issue and we can continue along.
Thoughts:
- Could be a loose connection that gets jiggled when hitting bumps.
Observations:
- Noticed that the ground connector at the base of the battery was not very tight. Compressed the connections to ensure that they connect better when attached to the bike.
- Performing capacity test to see if the battery is ok.
- Capacity test resulted with a battery capacity of 8.67Ah. Looks good.
References
| Reference | URL |
|---|---|
| F4W Peak 350W electric bike | https://www.f4wbikes.com/#!peak/cee5 |
| F4W (Fast4ward) Peak 350W Electric Bike Review | https://electricbikereport.com/f4w-fast4ward-peak-350w-electric-bike-review/ |
| Details | https://www.greenfinder-mobility.com/e-bikes/brand/fast4ward/#/product_preview/1375 |
| Review | https://www.youtube.com/watch?v=1bcUQ2ykW_M |
| How to install a Brushless DC Controller on Ebike: The missing manual | https://www.youtube.com/watch?v=PuwnFMHHtaE |
| Increase speed of ebike: Swagtron EB5 controller upgrade | https://www.youtube.com/watch?v=QbsPzjG-QpA |