yuba mundo v4

My Yuba Mundo M-Drive Electric Bike Conversion Kit

I have finally built my mid drive conversion kit for the Yuba Mundo V3.3 - V4. It is mounted in frame using my patented hub motor mount. The system is independent of the pedals, so when you throttle up, your pedals will not turn with the motor. You can coast with just the motor for as long as you like. The motor's gear is connected to a single cog freewheel mounted on a jackshaft then turns a fixed gear on the same shaft to drive the rear freewheel cogs. The front cranks are also connected to a single cog freewheel on the main jackshaft.