Originally Posted by eubi
I would tend to want to build a bike with round to oval tubing. When you add the corners things get strange in torsion. I can think of no benefit to using square tubing on a bike.
Yeah, I really like how the Serottas have tubing that changes diameter and are ovalized in different directions. The seattube gets fatter as it goes down to the BB. Both it and the downtube are ovalized laterally to resist sideways forces from pedaling. And the downtube is ovalized vertically where it meets the headtube. Pretty neat.
