Bike Guru's I need Crank Help

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qrkid

2009-09-06 6:45 PM

Expert

1394

Wilmington, NC

Subject: Bike Guru's I need Crank Help

I am interested in trying out compact cranks. At the moment I ride 172.5mm. How do I figure out what length I would get in a compact crank? Would I go to 170mm or 165mm? Anybody able to tell me what I need to be looking into if I want to make the change.

Thanks

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lodewey

2009-09-06 6:58 PM

in reply to: #2392590

Extreme Veteran

745

Colo Springs, CO

Subject: RE: Bike Guru's I need Crank Help

I don't think the compact (vs standard) makes any difference for the crank arm length. But then, I could be wrong... it has happened before.

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fausto

2009-09-06 7:00 PM

in reply to: #2392590

Member

Columbia, MD

Subject: RE: Bike Guru's I need Crank Help

I'm not taking, nor offering anything that belongs to bike guru*

but...
compact refers to chainring size, not arm length. Are you interested in lower gears (i.e., a compact) or just shorter crank arms? If you are talking about the former, generally you stay with what you have in terms of length (unless of course you have a reason not to; and 172.5 is the most common size these days).

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*see http://www.apostrophe.org.uk/

Daremo

2009-09-06 8:09 PM

in reply to: #2392590