Friction Drive E-Bike
von Macaca
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This design is for bikes that have no extra space under the seat tube for mounting a traditional friction drive system. Constant friction between motor and tire is maintained by two 1.2mm springs, and adjusted with zip ties on the other end of each spring.
**BUILD INSTRUCTIONS**
https://gum.co/LqmWJ
**PART LIST**
- Motor
https://www.banggood.com/custlink/DDvKqn1Pv7
- VESC
https://www.banggood.com/custlink/GD3KMLY6lf
- Throttle Grip
https://www.banggood.com/custlink/m3v3UjR0gv
- Arduino for Analog to PWM converting
https://www.banggood.com/custlink/Kvvmkoh00h
- Tension Springs
- Screw
1pcs M8 x 60mm bolt
2pcs M3 x 30mm bolts
4pcs M4 x 35mm bolts
4pcs M4 nyloc nuts
**Video**
https://youtu.be/CECEI_Vuol0
**BUILD INSTRUCTIONS**
https://gum.co/LqmWJ
**PART LIST**
- Motor
https://www.banggood.com/custlink/DDvKqn1Pv7
- VESC
https://www.banggood.com/custlink/GD3KMLY6lf
- Throttle Grip
https://www.banggood.com/custlink/m3v3UjR0gv
- Arduino for Analog to PWM converting
https://www.banggood.com/custlink/Kvvmkoh00h
- Tension Springs
- Screw
1pcs M8 x 60mm bolt
2pcs M3 x 30mm bolts
4pcs M4 x 35mm bolts
4pcs M4 nyloc nuts
**Video**
https://youtu.be/CECEI_Vuol0
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