Bafang motor pinion problem

Rog lee

New Member
Bafang motor pinion problem solved,"I hope". Sheared 3 teeth on my 48v midi motor after approx.600 miles, stripped it down and changed it with the help of you tube,not difficult at a cost of £17 from greenbikekit,the reason I think this happened is because i was changing gear whilst motor running and pedalling hard causing a sharp snatch in the gears.
Could this be the cause?,anyone else had this problem,or shed any light on it. Pitmogie.

Thomas Jaszewski

Well-Known Member
Absolutely. Some of us think some the later pinions are not up to the early quality, but your description, IMO would do it. There's a reason for things like the gearsensor, Green Button, and stopping the motor momentarily to shift. I think you found one.