Mountain Bike Reviews Forum banner
1 - 12 of 12 Posts

Registered
Joined
35 Posts
Discussion Starter · #1 ·
Howdy all,

Need some advice/suggestions for replacement cranks for my FC-M8050 cranks - 165 mm. In the span of about 6 months I've managed to bend my cranks twice, one seemed reasonable - tagged my crank on the ground at higher speed (don't pedal when corning 馃く) but this time I barely tagged the side of a fallen tree at probably less than 8 km/h and bender-rooney.
I am aware that my options may be limited due to the fact that it's an ebike, but yeah hit me with your suggestions.

+picture for something to look at
Bicycle Wheel Tire Cloud Sky
 

Nurse Ben
Joined
12,146 Posts
Ebike cranks? Maybe get something shorter like 150-160mm, they鈥檒l be less likely to hit the ground and more resistant to bending. If you鈥檙e heavier than 300#, it goes without saying 鈥 馃檮
 

BOOM goes the dynamite!
Joined
7,355 Posts
They put cranks on ebikes?

Sorry, couldn't resist...if you're bending Shimano, you'll likely bend most non-DH level stuff. See if a Zee/Saint or other burly crank will fit? Sorry, dunno anything about ebike fitment.

And stop running into stuff. At some point it won't just be the equipment that gets hurt.
 

Out spokin'
In cog? Neato!
Joined
19,642 Posts
They put cranks on ebikes?

Sorry, couldn't resist...if you're bending Shimano, you'll likely bend most non-DH level stuff. See if a Zee/Saint or other burly crank will fit? Sorry, dunno anything about ebike fitment.

And stop running into stuff. At some point it won't just be the equipment that gets hurt.
FWIW no, one can't typically put a mountain bike crank on an ebike. Not on a quality ebike designed for a dedicated motor. If this is the case OP, you'll probably be forced to replace the crank with another OEM crank.

I could be wrong. My Trek Rail has a Bosch CX motor with E-13 cranks. So I'm speculating a bit but this I know: the spindle is specific to the ebike because of its integration with the motor. Good luck.
=sParty
 

Nurse Ben
Joined
12,146 Posts
FWIW no, one can't typically put a mountain bike crank on an ebike. Not on a quality ebike designed for a dedicated motor. If this is the case OP, you'll probably be forced to replace the crank with another OEM crank.

I could be wrong. My Trek Rail has a Bosch CX motor with E-13 cranks. So I'm speculating a bit but this I know: the spindle is specific to the ebike because of its integration with the motor. Good luck.
=sParty
No, ebikes have a different offset, so sometimes there's crossover, I was able to get a good fit with Miranda on a Shimano drive, special order from Spain precovid.

Since ebikes tend to get pedaled more through corners and chunk, and because you don鈥檛 need much leverage, I鈥檇 go with 150mm; that鈥檚 what I put in my wife鈥檚 Shuttle.
 
1 - 12 of 12 Posts
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.
Top