Join Date: Oct 2004
Location: Portland Oregon
Bikes: Litespeed Arenberg, Litespeed Atlas, Fuji Track, Trek Fuel 90, Felt S32 TT bike, Bianchi Axis '05, and a lot of older bikes...
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I've used the calculator on the ZINN website for along time to set-up bikes. It's easier to do than the Eddie B method and much more accurate than the heel test that a lot of folks use. If I remember right, the formula ZINN uses is something like this:
Get your ideal seat height
Shoes off, feet about 8 inches apart, on a level floor, pull a carpenter's level up into your crotch, it should hurt- make sure you hold it level and it's all the way up.
Have someone measure from the top of the level to the ground in inches. Take the measurement a couple times to make sure it's accurate.
Multiply that number by 2.77 to get your seat height in cm or 1.09 in inches. Err low not high
You can find his fit calculator on www.zinncycles.com