How to replace drivetrain control unit

[kevinhill515]

Hi guys, I have an older Haibike full seven rx xduro that I love. Unfortunately something in the drivetrain control unit is busted and the pedal assist doesn’t work. Took it to a bike shop that said I’d be better off buying a new bike but I was hoping someone has some info on how to replace the whole unit with a new one. Happy to get my hands dirty, just looking for some guidance. Thanks!

 

[ElHegpah]

Custom work, involving proprietary parts which may very well be unobtainable.

Most of these have motors which will not work with anyone else's controller, and they do not make theirs anymore. Your choices are used, recovery parts from broken similar bikes, replacing motor AND controller AND likely battery, or just get a new one.

This is what you paid for, and this is what you told your ebike maker was OK with you.

 

[Orcasprout]

Alas you'll need to see if the motor brand on the bike has a replacement controller available.

It almost looks like the "M" series of Bafang motor but I couldn't tell.

If you can't find the right replacement controller you could research replacing the motor/controller.

Are you sure the "drivetrain component" is busted? Often the PAS sensor breaks or there is a wire that is broken. These are much easier to repair/replace.