Originally Posted by pgjackson

I've been wondering this myself. How does the top tube determine the seating position? They say a sloping tube is more for comfort and a flat tube is for hunkered-over racing. If the seat is the same height from the pedals and the handlebar is the same distance from the seat and the drop is the same, how does the top tube change anything? To me it seems to be more about style. Flat tubes look a little old-school, and sloping tubes are more modern. But I really know squat about cycling, so take what I say with a grain of salt.