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What crank length do you use on your bikes?

post #1 of 16
Thread Starter 
What length cranks do you all use?

Do you find longer-than-standard (i.e. 170mm) cranks more helpful for the type of riding that you do, e.g. hill climbing, time trials, etc?

Do you ride a crank length only because it specifically fits your inseam measurement?

Or do you adhere to the idea that we should actually all be riding shorter cranks to improve or performance?

Be good to get some thoughts on this...!
post #2 of 16

Re: What crank length do you use on your bikes?

Quote:
Originally Posted by Gilders
What length cranks do you all use?

Do you find longer-than-standard (i.e. 170mm) cranks more helpful for the type of riding that you do, e.g. hill climbing, time trials, etc?

Do you ride a crank length only because it specifically fits your inseam measurement?

Or do you adhere to the idea that we should actually all be riding shorter cranks to improve or performance?

Be good to get some thoughts on this...!
I duno what makes you think 170 is standard? I think ya ought use what works best for ya. I use 170,725,and 175 and have a hard time telling the difference.
post #3 of 16
Thread Starter 

Re: What crank length do you use on your bikes?

Quote:
Originally Posted by boudreaux
I duno what makes you think 170 is standard? I think ya ought use what works best for ya. I use 170,725,and 175 and have a hard time telling the difference.
Good point - "standard" should have been written to read as " "standard" " (!).

To clarify, I've noticed that the crank length supplied on (mass-produced) new bikes seems to show a leaning towards 170mm, which is why it was suggested as being the "standard" length.

Boudreaux - what type of terrain do you usually ride? 172.5 aside, would you notice any discernable difference changing between 170 and 175mm cranks?
post #4 of 16

Re: What crank length do you use on your bikes?

I ride 172.5.

Here most shops will fit you with a 172.5 or 175. Beyond 170s, it gets difficult to find LBS that carry 'em!
post #5 of 16

Re: What crank length do you use on your bikes?

I ride 172.5.

Here most shops will fit you with a 172.5 or 175. Beyond 170s, it gets difficult to find LBS that carry 'em!
post #6 of 16

Re: What crank length do you use on your bikes?

I did notice a difference when I went from 170s to 175s, but I made the mistake of not easing into the new length (I absolutely hammered for a month), and injured my knee (bursitis, "they" said), which took a year to get right!!! Mind you, I did 15,000km in that year.

I pannicked and went back to the 170s, which I now have on all my 6 bikes, but I'd like to try the 175s again one day becuase i did like the leverage.

One day, many, many moons ago, I dusted off a bike that I hadn't ridden for a couple of years, and forgot that it had 175s on it (I'd been riding the 170s).
I knew, however, that the bike had the same gearing, and for about half an hour, I couldn't figure out why it was so much easier using the same gears going up the same hills....there you go....

Having said all that, Rominger and Boardman, although both not at all tall guys, rode amazing "hour record" distances using 170s and 172.5s. I know it's relative to height and leg length, but I still find it interesting
http://www.bikecult.com/bikecultbook...cordsHour.html
post #7 of 16

Re: What crank length do you use on your bikes?

175mm road
170mm track
post #8 of 16

Re: What crank length do you use on your bikes?

172.5 mm for winter training to help me spin a small gear more smoothly.
175 mm in summer, provides more torque for turning bigger gears.
Yes i do notice a big difference between crank lengths.
post #9 of 16

Re: What crank length do you use on your bikes?

172.5 on the road and 175 in the mountains
post #10 of 16

Re: What crank length do you use on your bikes?

mine are just 170s now, I'd love to get some 165s for the sake of knowing i'm not gonna grind a pedal on the ground when i'm pedaling through turns, but considering i've started getting a larger collection of bikes, and would rather them all have the same lenth, i think it will be easier just to stick with the 170's
post #11 of 16

Re: What crank length do you use on your bikes?

175 mm for road. 5'11" tall.
post #12 of 16

Re: What crank length do you use on your bikes?

175 6'2" 33" inseam. Asking what crank length w/o asking for other dimensions is like asking what seat tube extention folks are ridin'.
post #13 of 16

Re: What crank length do you use on your bikes?

I have 172.5 on my road bike.

I just found a Peugeot Jubilee that has a 46cm frame and 24" wheels with 152.5 crankarms. Very intresting it is like a little kids Peugeot. That kind of funny part of it is that it fits my GF perfectly with her 29" inseem.
post #14 of 16

Re: What crank length do you use on your bikes?

I'm 1,85 running 180mm. I first switched from 172.5 to 180mm on my road bike, having used 175mm on the MTB for some time. When I switched back to the 175's on my MTB it seemed like I had no leverage at all anymore. Now there are 180's on the MTB too.
I've been on 180's for 5 years now, no knee problems or anything and after an adjustment period you can spin high revs too.
post #15 of 16

Re: What crank length do you use on your bikes?

Quote:
Originally Posted by jamisbiker91
172.5 on the road and 175 in the mountains
same
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