Originally Posted by
Chacam
I have a 2007 Jamis Aurora and beneath the seat on the frame there is a sticker that says "50 size" I assume that is referring to part of the frame (centimeters?)? Is that size considered small medium or large? I am 6' and the bike seems to fit me OK and is comfortable to ride.
...50cm would have been 19.6" frame (I never got metrasized) and would have been for shorter riders, say 5'6" or below and I can't imagine it being comfortable for a 6 footer! I'm 6' and ride a 23" frame (58.4 cm) comfortably.
Today, however there are many different styles of frames and the "old system" of measuring is no longer applicable in many cases.
What's more important is how the fit feels to you. I want my knee to be slightly bent at the bottom of the "stroke" (and not hitting the bar at the top), otherwise my knees get very painful in short order.