Subject: crank arm shape Posted by: Kiwi on December 07, 2000 at 02:54:34:

Message: I've noticed that the Ultegra crank arms on my race bike are curved, and those on my old ride-to-work Campag equipped bike are straight. The dimension between the ends of the Ultegra cranks is 10mm greater than the Campag ones, for an identical BB width. Is one design superior to the other? Or is this more an appearance issue? Is there any penalty in pedalling efficiency? Cheers!