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09-04.-2004, 07:38 AM
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#16 |
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Guest
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Re: Crank length advice/help requested.
On Thu, 08 Apr 2004 10:23:41 -0700, Ryan Cousineau <rcousine@sfu.ca>
wrote: <big snip> >I'm quite interested in crank lengths. I started out on 170mm on my road >bike like everyone else (5'6", my pants are 30" inseam), but ran into >some achilles tendon issues that fought with long-standing knee issues. >Some of you get the joke already: for the achilles tendon, dropping your >seat slightly helps; for patellar tendonitis, raising it slightly helps. > >My solution was to shorten the cranks and move my cleats back on my >shoe. The latter reduced ankle flex tendencies, which helps the tendons. >The shorter cranks mean less knee flexing, which is good for the knees. > >I run 165mm cranks, and I do notice that sometimes there's a certain >constrained feeling to my pedaling circle. Since this is better than not >being able to ride because my ankle or knee is in pain, I accept it. I >also get some benefit in racing from the shorter cranks: less pedal >strike in corners, which means I can accelerate a bit sooner and more >confidently. This is interesting to me as I also use 165mm cranks on my 'road' bike (I am only slightly taller). I bought the cranks because I desired the particular model at the time and I decided to see whether I could tolerate the length. I also notice the difference in the pedalling circle but I actually quite like it (as well as being able to pedal while cornering more often), I bet my knees prefer it and I aim to continue using this size in the future. >The punchline is that my mountain bike has 175mm cranks, mostly because >I can't find suitable 165mm cranks at my usual cheap prices. I hear ya. >As most of you know, mountain bike cranks tend to the long side. 180s >are not unheard of, and 175 is pretty common. But my thinking is that if >you can get the gearing right (I'm sure I can), short cranks will mean a >little more obstacle clearance while pedaling. I also have 175mm cranks on my mountain bike because, as you point out, this size is the most common and I usually buy used. Now that I spend most of my riding time on 165s, I have to admit that the 175s are not quite as comfortable for constant pedalling at high cadence. Since I spend less time on the MTB and when riding the local trails my pedalling is much more sporadic and I stand to pedal more often, it's not a big deal for me at this point. |
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09-04.-2004, 12:37 PM
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#17 |
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Guest
Posts: n/a
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Re: Crank length advice/help requested.
<bbense+rec.bicycles.tech.Apr.08.04@telemark.slac.stanford.edu>
wrote in news:c545po$sma$1@news.Stanford.EDU: > > _ There's any number of 110/74 165mm cranks out there. You can > get Sugino's with chainrings for less than $100. > I am sure Ryan is talking $20 cdn not $100US. By the by Ryan my son got a good set of Sugino 165's for $20 at the used bike shop on Main near 17th for his new fixie. |
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09-04.-2004, 02:52 PM
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#18 |
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Guest
Posts: n/a
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Re: Crank length advice/help requested.
In article <Xns94C5D1C177FE3mikelatshawca@64.59.144.76>,
Mike Latondresse <mikelat@no_spamshaw.ca> wrote: > <bbense+rec.bicycles.tech.Apr.08.04@telemark.slac.stanford.edu> > wrote in news:c545po$sma$1@news.Stanford.EDU: > > > > > _ There's any number of 110/74 165mm cranks out there. You can > > get Sugino's with chainrings for less than $100. > > > I am sure Ryan is talking $20 cdn not $100US. By the by Ryan my son got > a good set of Sugino 165's for $20 at the used bike shop on Main near > 17th for his new fixie. D'oh! Those should have been mine! Heh. Actually, I have a set of Sakae CX 165s just sitting around right now waiting for a project. They're not that rare in road configurations (I have a couple sets of 110 BCD, and Sugino 130 BCD on my race bike), though triples are a bit more desirable. I've been a bit constrained because I keep thinking I want to use my current rings, and the present crankset is a 94mm Compact (that's one thing I don't think I made clear earlier: this is for my mountain bike); I think it's Deore LX cranks. And the BB needs changing, so there's that. But of course I want something I can find in the bargain bin. I mean, if I had the cash, I wouldn't pussy-foot around: Race Face Diabolus 165s with triple rings; lots of weight, but my sought-after 165mm length and that funky external-bearing "just-like-Shimano" design. It's all good, -- Ryan Cousineau, rcousine@sfu.ca http://www.sfu.ca/~rcousine/wiredcola/ President, Fabrizio Mazzoleni Fan Club |
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