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57cm frame... 172.5 or 175mm cranks?(7 posts)

57cm frame... 172.5 or 175mm cranks?HBPat
Feb 6, 2003 11:32 AM
I can't really tell the difference, and am wondering what most people ride for that size frame. I am leaning towards 175 but not sure if the toe overlap will be too much.
re: 57cm frame... 172.5 or 175mm cranks?merckx56
Feb 6, 2003 11:53 AM
I ride a 57 cm bike and ride 175 cranks. A lot of the decision lies with the length of your femurs and how long you've ridden. I rode 172.5 cranks for about 10 years and decided to get the 175s and have changed the cranks on every bike. Granted, it's only 2.5mm and probably a bit psychological, but I can tell the difference in my stroke, particularly when climbing. Toe overlap is really a big concern on a frme that big. I have a very small amount, but most people do as well. Cranks that are too long can also damage your knees, ask Jan Ullrich.
re: 57cm frame... 172.5 or 175mm cranks?HillRepeater
Feb 6, 2003 12:05 PM
I have two ~57cm bikes, one has 172,5's the other has 175's. I honestly can't tell a difference between the two.
172.5 on my 57cm frametarwheel
Feb 6, 2003 12:16 PM
Are you a spinner or a masher? I'm a spinner, so I opted for the shorter crank. If you're a masher, go for the longer.
leonard Zinn...ClydeTri
Feb 6, 2003 12:18 PM
Did an article a few years back on advantages of differing lengths....he ended up with ones left on his bike 2.5 mm different in length...he rode his bike that way for quite awhile before discovering it, he couldnt tell they were different by riding...the moral of the story? YOu know how much difference in length 2.5 mm is? one tenth of an inch...go with whatever is already on the bike or what you can get the best deal for.
172.5 mm cranks on two 56 cm frames and one 57 cm (c-c) nmJS Haiku Shop
Feb 6, 2003 12:20 PM
I was sized for a 172.5 and I ride a 59cm(58.5top tube)the bull
Feb 6, 2003 3:52 PM
I am 6 ft tall
It might have more to do with your riding style
probally could not tell the differance