Short cranks for new Creo e-bike

[dcendo]

Hi. First post. My wife has both knees rreplaced and has very limited Flexion. I solved the problem on her Trek Madone by having the cranks shortened and re-threaded. I was also able to make it work by having Zinn Cycles in Boulder make custom cranks for her cheapo belt drive rear hub ebike. The cranks on this one are 120 mm. They work perfectly.
Now she wants a new Creo. The shortest cranks Specialized will supply is 165. It’s a Dub bottom/spindle. Any suggestions where I could get really short cranks - like 120 short? Thank you in advance.

 

[Nvreloader]

dcendo
I think you need to edit the post name, you mean "short" cranks??
You should get some more info, hopefully.

 

[Jeremy McCreary]

dcendo
I think you need to edit the post name, you mean "short" cranks??
You should get some more info, hopefully.

Have to admit, I tend to pass right over titles that should've been proofread before hitting [Send].

I'm old enough to think that spelling, grammar, and punctuation are actually useful aids to written communication — which is what we do here — and not just pesky rules to be ignored. We all make typos, of course. That's why you have to proofread everything — especially titles.

Pardon the rant. Hope the OP finds a solution.

 

[mschwett]

creo 2 uses DUB crank arm interface with a BB30 bottom bracket, discussed at a bit of length here https://forums.electricbikereview.com/threads/creo-2-carbon-cranks.54924/

there seem to be options out there down to around 150, maybe 135, probably with an axle that you can't use.

 

[dcendo]

Have to admit, I tend to pass right over titles that should've been proofread before hitting [Send].

I'm old enough to think that spelling, grammar, and punctuation are actually useful aids to written communication — which is what we do here — and not just pesky rules to be ignored. We all make typos, of course. That's why you have to proofread everything — especially titles.

Pardon the rant. Hope the OP finds a solution.

Feel better? So sorry for my error.

 

[Base]

Could not find an English site with this product, it should be somehwere on the internet.

Mirage crankverkorter aluminium T6 met RVS bouten, zwart

www.buzaglo.nl

you could alternatively use those to "shorten" the cranks.

found one source in English

Buy Mirage Crank Shortener Aluminum - Black (2) at HBS

Order the Mirage Crank Shortener Aluminum - Black (2) online quic

hollandbikeshop.com

 

[dcendo]

Could not find an English site with this product, it should be somehwere on the internet.

Mirage crankverkorter aluminium T6 met RVS bouten, zwart

www.buzaglo.nl

you could alternatively use those to "shorten" the cranks.

found one source in English

Buy Mirage Crank Shortener Aluminum - Black (2) at HBS

Order the Mirage Crank Shortener Aluminum - Black (2) online quic

hollandbikeshop.com

Thank you for that. I do have a set of those for when we go on bike trips outside of the country. But for everyday riding, the q-factor is way to wide - and while I don’t have any actual evidence, her orthopedic doc thinks the repetitive stress on her titanium knees with the alignment of her feet way out relative to her knees can’t be good in the long run. But again, thank you for the effort to track these down.

 

[TMarkus]

Hi Dcendo, I am in a similar situation. My wife and I have cycled tons. Over the last few years after a double knee replacement shorter cranks were the solution that keeps her riding. We have crank shorteners and swing cranks that we tested too. We fitted her Salsa Warbird with custom cranks from a local machine shop. They are 128's. Then I bought us a pair or Creo's. She currently rides it with crank shorteners, but it's not the same. The Q factor (wider) riding with for legs and feet is troublesome. So now I am on the hunt for someone to come up with a solution....which we are willing to pay dearly for. How about we collaborate and try to get it done for our riding partners? Let me know. I am all in! Truly, Mark

 

[dcendo]

Hi Dcendo, I am in a similar situation. My wife and I have cycled tons. Over the last few years after a double knee replacement shorter cranks were the solution that keeps her riding. We have crank shorteners and swing cranks that we tested too. We fitted her Salsa Warbird with custom cranks from a local machine shop. They are 128's. Then I bought us a pair or Creo's. She currently rides it with crank shorteners, but it's not the same. The Q factor (wider) riding with for legs and feet is troublesome. So now I am on the hunt for someone to come up with a solution....which we are willing to pay dearly for. How about we collaborate and try to get it done for our riding partners? Let me know. I am all in! Truly, Mark

Yes let’s see what we can do.