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Pinball Wizard
Reputation:
180mm cranks for me?
Hi,
I've always used 175mm cranks on all my previous bikes and my previous singlespeed. Anyway, I don't necessarily feel the need for 180mm crank arms, but am curious as to the actual/percieved benefit. I am 5'10" tall, but don't have particularly long legs. So, I h=guess any input would be greatly appreciated.
Thanks,
Colin
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 Originally Posted by futonrvltnst
Hi,
I've always used 175mm cranks on all my previous bikes and my previous singlespeed. Anyway, I don't necessarily feel the need for 180mm crank arms, but am curious as to the actual/percieved benefit. I am 5'10" tall, but don't have particularly long legs. So, I h=guess any input would be greatly appreciated.
Thanks,
Colin
Hmmmm, I'm 5'10", have short legs (29" inseam), and like the 180's.
Setting up the mathematical proof here, from Algebra I...
Let Nat = 5'10" + 29" = 180mm
If Colin = 5'10"
Then Colin = 180mm
Yes, you would indeed like the 180's!
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mtbr member
Reputation:
You call that Math?
What ever... You got a point. I rode 175 on everytihing for years. Got some 180. love em. I'm not sure how big a difference it is in fact, but they just FEEL really good. I'm gonna go ride em now.
Bye Bye....
pinky!!! what the hell are you doin'??!!!??!!!
-waiter at outback steak house
(i had pink hair at the time....)
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Recovering couch patato
Reputation:
Miguel Martinez = Former Olympic Champion = 5'4"/5'5" ?
175mm cranks exclusively.
Remember how all shoudl be in proprotion. Do the math and see how big you could go without exceeding the relative crank length of an Olympic Champ. And he's a gearie, even...
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mtbr member
Reputation:
It's all about femor length and it's not a linear relationship.
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mtbr member
Reputation:
I switched to 180s about a month ago. The extra leverage works great for me. I'll never use 175s on a SS again. If your riding style is mostly out of the saddle (like most SS's) I think you'll like them.
I only have 2 minor complaints. Since I now pedal a larger diameter and my feet are big, my heel nicks the chain stay (sometimes). And I have lost 5mm of pedal to ground clearance.
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I haven't decided yet...
 Originally Posted by futonrvltnst
Hi,
I've always used 175mm cranks on all my previous bikes and my previous singlespeed. Anyway, I don't necessarily feel the need for 180mm crank arms, but am curious as to the actual/percieved benefit. I am 5'10" tall, but don't have particularly long legs. So, I h=guess any input would be greatly appreciated.
Thanks,
Colin
A couple months ago I switched from 180's to 175's; I did not change my gearing (34;18/32:17). The result has been predictable. My seated grinds feel stronger but there are a couple of steep climbs I used to be able to do that I can't clear now. I'm also 5'10" with 32" inseam. Since I do race from time to time, I figure I'll time myself on a couple loops and switch back to 180's. Hopefully I'll have the results by the end of next month and my race at North Star.
1G1G, Brad
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Pinball Wizard
Reputation:
Thanks for all the replies.
I live in S. Florida, so there are no extended climbs, just short & steep climbs. But, I do have two sets of 175mm cranks here, so I am more inclined to run them since I woun't have to buy anything new.
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