[EDIT] I'm hoping this thread will be of interest to current or future Bafang owners or anyone with ideas on how to solve the "peanut butter" problem. Anyone interested in my bike specifically, click my signature link and feel free to post on my build thread, Cheers guys! [EDIT 2] For a list of people who have stripped their nylon gears, click HERE. A few people have been looking at stronger gear replacement options but no widely available drop-in replacement has been found or manufactured and made available.
I've managed to strip out two sets of Bafang's nylon gears (3 per set) in two short rides.
I had the EV grin, but it was brief.
The first set lasted 3min, the second lasted 15min and 6km. I was much more wary of my current the second time and kept it under 18A at ~70V. I also tried to roll the throttle on slow and smooth.
Ended up with peanut butter gears:
Replacing them is quite a pain. It's a big help that Knuckles offers them, and kindly posted me two sets to Australia
But at $10/gear it makes petrol look cheap at the rate I'm burning through them. Others may find themselves in a similar situation, I hope we can find a solution together
Any ideas on the causes (voltage|speed or current|thrust)?
Any ideas of a stronger replacement, either a composite material or metal?
I think with metal, the motor might need to be decently sealed and lubricated to keep the metal on metal meshing happy.