Originally Posted by
squirtdad
no science just what i have experienced. I ride 175. had a torpado with 170 and rode it a lot until the spider cracked it was ok but always felt a a little off. Got a 84 team miyata with 165, rode it very little....just felt way to short, which was sad as the cranks were like 7201 durace....pretty rare Have 177.5 on the bike now (as i got a beautiful set of 7400 durace.) not a lot of rides but the 2.5 over 175 hasn't seemed to be an issue ...time will tell (anywone want to swap 175 for 177.5 durace ?)
I think I do have a 175 7400 dura-ace crankset- i don't mind 177.5 . its at work and I don't really recall the exact condition as I love the 7400 crankset, my favorite, so I have had several and I can't remember which set this is in terms of scuffs etc. now with COVID i rarely go, but I go once a week and can check for you if you are serious. I think they are 175... might be 172.5... but I think all the ones I have had were 175