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crank arm Q's...(3 posts)

crank arm Q's...karlooz
Apr 16, 2002 8:21 AM
i am in the market for new road cranks and need advice on crankarm lengths. btw i am 5'7" w/ 30"ish inseam.

currently on my mtn bike i use 175mm xtr cranks, pretty much the standard/only size that is offered for mtn biking. i like the added leverage it gives me on the steeps. on my road bike, i have 170mm crankarms. of course spinning is much easier but less leverage.

should i go for something in between say a 172.5, stick with the 170 or go 175 to keep everthing equal? i split my time between mtn and road about 50/50
re: crank arm Q's...Troyboy
Apr 16, 2002 8:22 AM
My opinion is leave the 170s, especially if you're racin'. The more clearance, the better.
it's up to youcyclopathic
Apr 16, 2002 1:44 PM
I am 5'5" 30.5" instem and given the same choice I went with 175.

I can spin better on 175 then I could with 170 /don't ask why/ and the reasoning was "to keep things equal". My commuter has 170 and honestly if I didn't know I wouldn't guess.

Honestly it is Campy vs Shimano or Ti or steel questions. Conventional wisdom says road cranks should be shorter then mnt and track cranks shorter then road. Speaking of track main reason for shorter cranks is track banking, not "spinning" properties IMHO.