Use remote control car motor for electric bike

[Deleted member 17881]

Hello,

Here are the motors specification:

Velineon 3500 Specifications:
3500kv
Type.....Sensorless brushless
RPM/volt..... 3500 (10-turn)
Magnet type...Ultra High-Temperature Sintered Neodymium
Connection type ...TRX 3.5mm bullet connectors
Wire size.....12-gauge Maxx® Cable
Current Ratings...65A constant; 100A peak/burst
Max RPM...50,000
Diameter.....36mm (1.42”) (540 size)
Length....55mm (2.165”)
Weight...262g (9.24oz)

Speed controller specification:

VXL-3s WATERPROOF ESC SPECIFICATIONS
Input Voltage: NiCad/NiMH 4-9 Cells (4.8 to 10.8 Volts DC);
LiPo 2-3 Cells (7.4 to 11.1 Volts DC)
Case Size: 39mmW x 55mmD x 33mmH
Weight: 90 grams
Motor Limit (Brushed/Brushless): No motor limit
On Resistance Forward: 0.00075 Ohms
On Resistance Reverse: 0.00075 Ohms
Peak Current - Forward: 320A
Peak Current - Reverse: 320A
Braking Current: 320A
Continuous Current: 200A
BEC Voltage: 6.0 V
BEC Current: 2.5A (with 6-cell NiMH)
Power Wire: 12-Gauge Maxx® Cable
Input Harness Wire: 26 Gauge / 100mm
Transistor Type: MOSFET
Low Voltage Detection: 2-Stage indicators, switchable (on or off)
Thermal Protection: 2-Stage thermal shutdown
Profile selection: Sport Mode:
100% FWD, 100% BRAKES, 100% REV
Race Mode:
100% FWD, 100% BRAKES, NO REV
Training Mode:**
50% FWD, 100% BRAKES, 50% REV
Single-Button Setup: Yes, Traxxas EZ-Set®
Battery Input Connector : Traxxas High-Current Connector
Motor Types (Autodetect): Brushed, brushless, sensored brushless
Ports: RX Input, motor sensor, auxiliary fan

Website for speed controller: https://traxxas.com/products/parts/escs/vxl3s. Website for motor: https://traxxas.com/sites/default/files/3351-INST-KC1682 Velineon 3500_ML_120813.pdf

What do you think about using this motor, speed controller for a mountain bike to be a electric bike?

Thanks for all your help

 

[Deleted member 4366]

Loads of people have done it already. Go for it. You need a decent ESC to get smooth throttle take up.

https://www.electricbike.com/roys-ecortina/

 

[Deleted member 17881]

Loads of people have done it already. Go for it. You need a decent ESC to get smooth throttle take up.

https://www.electricbike.com/roys-ecortina/

I am not sure though, that the motor is powerful enough to make the bike go 20miles per hour. What speed do you think the motor is able to get on a mountain bike?

Also, I know making a custom made battery is better than buying a battery already made. Although, what is the maximum number of batteries the motor, and speed controller can handle?

Thanks for all your help.

 

[Woosh]

can somebody explain to me why using an RC motor for e-bikes? Would you expect it to last 10,000 miles?

 

[Deleted member 4366]

I am not sure though, that the motor is powerful enough to make the bike go 20miles per hour. What speed do you think the motor is able to get on a mountain bike?

Also, I know making a custom made battery is better than buying a battery already made. Although, what is the maximum number of batteries the motor, and speed controller can handle?

Thanks for all your help.

It can run 650w to 1000w, so that should be enough. Your bug problem is going to be how to get from 50,000 rpm down to 270rpm for the back wheel. That's a reduction of about 200:1, so you'll need at least two stages.

 

[Steve UKLSRA]

50 000 RPM!!! That'll be one fast bike

 

[Woosh]

at that speed (50,000 rpm), how long do you think the ball bearings are going to last?

 

[LeighPing]

at that speed (50,000 rpm), how long do you think the ball bearings are going to last?

Maybe he's only planning on doing the one trip..