Bent crank arm

[Durukan Devrim]

Hi. I'm using a Bosch CX powered ebike as my daily commuter. Unfortunately I fell off my bike while cornering in wet weather. Bike landed on the crank arm and it bent pretty bad. Thankfully motor seems to be fine but pedalling with a bent crank is really annoying.

This is what I have on my bike: https://www.tritoncycles.co.uk/comp...sprockets-c69/bosch-2-crank-with-guard-p17559

I'm not going to replace my crank with the same one since it doesn't seem to be sturdy enough. So, as I was searching for an upgrade I realised that none of replacement cranks come with a chain guard. Then I took my crank apart and saw that the guard is riveted on the arm, so I can't just use it with new cranks.

These are the replacements I found: https://www.bike-discount.de/en/shop/bosch-system-18250/l-24

Anyone ever been in this situation? What do you think I should do?

 

[rocky289]

If is was me, I would first straighten the bent arm.
If it breaks, then I would buy a new one the same.
If you go to something stronger & have the same crash you may break the motor instead.

 

[Durukan Devrim]

If is was me, I would first straighten the bent arm.
If it breaks, then I would buy a new one the same.
If you go to something stronger & have the same crash you may break the motor instead.

Very good advice. I've already straightened the arm with my hammer (crank off the bike of course). It didn't break but it doesn't mean that it won't since it's aluminium. It's not perfectly straight either I can still feel it as I pedal. I ordered Sram EX1 cranks which is specifically made for mid drive ebikes (Bosch, Yamaha, Brose etc.) such as mine. I hope I won't break the motor next time.