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Tour riders rub off the paint of the top tube. Why?(2 posts)

Tour riders rub off the paint of the top tube. Why?Noam
Jul 10, 2002 4:51 AM
Seen recently many of the Tour riders posture on the bikes with the inside of the knees close to the top tube. In fact I read that some riders polish off the paint of the top tube each race. Could anyone explain why?
re: Tour riders rub off the paint of the top tube. Why?TJeanloz
Jul 10, 2002 5:12 AM
There is a lot of aerodynamic efficiency to keeping your knees in, and it also helps transfer power, as having your knees close to the top tube keeps your entire leg in the plane of the pedal. Many pros (and other riders too) wax the paint on their top tube so that on the occasions when the inside of your knee actually touches the tube, it doesn't chafe from repeated contact.