Interesting, I"m currently building my dream bike and I'm putting on longer cranks. I currently ride 165 but I'm trying longer. May work out, may not. I'm interested in learning how you know the right length for you. I"ve found so many different opinions and calculations that trial and error seem to be the best solution. BTW, I'm just 5'1 3/4. I understand it's more about the femural length than your height however.