crank size

[iwannabeabiker]

Hi there, can so one give me an overview on why there are different crank sizes please. i.e. 172.5 or 175. Cheers!

 

[180mmCrank]

Don't know if this helps

And here is the definative response from the man himself Mr Zinn

http://www.velonews.com/article/5257

Hope this helps

P.S. I ride a 180mm crank but I doubt that is much of a surprise to anyone!

 

[badboyberty]

Also a shorter crank is considered better for spinning smoothly with a high cadence, while a long crank gives a longer lever to use.