Hi all. At the moment i am on secondment in Spain for 2 years and i have bought myself a second hand sparta e-bike with a Bosch motor. Last week my pedal fell off and it needs a new right crank arm . I believe it to be an isis 170mm crank but am not 100% sure. I need to order a new one or set. Can anyone tell me if all isis crank arms will fit or do i need a certain make/model. The bike shops here in Spain dont seem to have a clue. Can anyone help? I have enclosed some pics .Thanks in advance
Sharon
Help with isis crank
Re: Help with isis crank
***WARNING: there follows guesswork, due to noone else answering for a day. Might be helpful, might be nonsense ***
I've never looked closely at an E-bike.
left cranks are easy - you just need the right splines (in this case, Isis!). R cranks *usually* have the chainrings attached (or something like a spider attached, to which the chainrings are _then_ attached). They thus vary a lot!
From your picture, it looks like this E-bike setup has a right crank that attaches just like a LEFT crank. There are probably "special" right cranks for this transmission (that don't ahve chainrings or spider attached), so I'd recommend trying to find one. AS they are quite simple, they may be quite affordable. "May" ...
I've never looked closely at an E-bike.
left cranks are easy - you just need the right splines (in this case, Isis!). R cranks *usually* have the chainrings attached (or something like a spider attached, to which the chainrings are _then_ attached). They thus vary a lot!
From your picture, it looks like this E-bike setup has a right crank that attaches just like a LEFT crank. There are probably "special" right cranks for this transmission (that don't ahve chainrings or spider attached), so I'd recommend trying to find one. AS they are quite simple, they may be quite affordable. "May" ...
Re: Help with isis crank
are they these?
https://www.e-bikeshop.co.uk/bosch-ebike-crank-arms
if so they can be had for about £35 from some sources, in different lengths, and yes they use the ISIS spline.
cheers
https://www.e-bikeshop.co.uk/bosch-ebike-crank-arms
if so they can be had for about £35 from some sources, in different lengths, and yes they use the ISIS spline.
cheers
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