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Maybe someone can clear this up for me...(3 posts)

Maybe someone can clear this up for me...MVN
Aug 4, 2003 8:36 PM
I was told by the lbs owner that seat height is measured from the center of the pedal spindle to the top of the saddle along the seat tube. I've read on other web sites (including Colorado Cyclist's) that seat height is measured from the center of the bottom bracket to the top of the saddle. Which is correct? It makes more sense to me that seat height should take into account the crank length, but maybe I'm wrong. Just curious. Anyone care to weigh in on this?
... a little Amoxacillin ointment should clear it right up...Akirasho
Aug 4, 2003 8:43 PM
... I've always measured from center of BB to the top of the saddle... It only makes sense since this is a static distance. I'm not familiar with your LBS's method.

Be the bike.
He's rightSpoiler
Aug 4, 2003 9:24 PM
Saddle height belongs to you. Your saddle height isn't a measure of the bike frame. You won't find it stamped on the frame or listed on the specs. It's a measure of YOU on the bike frame. It should be the same number whether you're riding a Litespeed, Colnago, or Lemond or Giant.

A bike frame's seat tube length is measured along the seat tube from the center of the bottom bracket to the top or center of the top tube.
The ideal bike frame seat tube measurement for you WILL change from one bike brand to another.

For instance, I ride a 53 cm frame. My top tube is normal, it's parallel with the ground. The distance from the center of the BB to the top of the seat tube is 53 cm. But if I were to lose my mind and trade in my beloved Torelli for a sloping top tubed bike like a Giant TCR, the length of the seat tube would be shorter. I'd still want the make sure the distance from the top of the saddle to the bottom of my pedal stroke is the same to get the same fit.