Long Range E-‘bike’

Overview

This project, not written in Rust, converts an old mountain bike to an abomination using batteries from a Nissan Leaf, and motors powering both wheels to make this gizmo all-wheel drive. It includes CNC machined aluminum parts on the motor mounts to strengthen the point where the motor delivers up to 1200 watts to the frame. The firmware for the throttle and brake mixing was written in C++, and although relatively simple in concept, it is written with extreme safety management and failsafe error handling to avoid getting stuck at full throttle with an unhappy human on board. I've already gotten a concussion from poor design on one of my vehicles, and I don't intend on doing it again. I was told it was bad, although I don't recall.

Measured specs

• range: ~90 miles
• top speed: 40mph
• brakes: very hot

Conclusions

• It's not worth CNCing at home for a single part
• Calculate everything in the planning phase. The brakes are not strong enough, and have worn down completely after 200km
• CAD everything before buying.
• Don't be afraid to buy something just because you have a part that technically works

Pictures