There are humans exactly your height riding just about every crank arm length out there. The conventional wisdom is that longer arms are harder to spin but give you a little more power. Smart people who don't care a lot about optimal performance when cycling will correctly say 170mm is fine, but so is 175mm. Some very smart people who DO care a lot about performance also say it doesn't matter, 170mm is fine. I'm basically your height and I've always been a 172.5mm guy. Even though I now have begun to acknowledge that it doesn't matter if I end up with 170s or 175s, I still prefer to run 172.5mm if possible, but not for any measurably provable reason.
If you decided to really dwell on it, you'll find many testimonials on the interwebs of how "that lousy bike fitter told me to use 177.5, and it destroyed my patella tendon and I switched to 175 and now I'm pain free!". Take them with a pinch of salt. There's absolutely no problem with a human your height running 170s, or 175s, or something else. On Thursday, February 28, 2013 1:47:27 PM UTC-8, Michael Williams wrote: > > Hey Group, just wondering if any has any information on correct crank > arm length. Im 5'11 PBH is 89.5cm and Ive always ridden 170's without > thinking too much about it. Do longer cranks offer anything different? > thanks in advance. -Mike -- You received this message because you are subscribed to the Google Groups "RBW Owners Bunch" group. To unsubscribe from this group and stop receiving emails from it, send an email to rbw-owners-bunch+unsubscr...@googlegroups.com. To post to this group, send email to rbw-owners-bunch@googlegroups.com. Visit this group at http://groups.google.com/group/rbw-owners-bunch?hl=en. For more options, visit https://groups.google.com/groups/opt_out.