Friction Drive E-Bike

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