Originally Posted by lotek
My understanding is that the Osymetric Rings are ovalized 90 offset
(relative to crankarm) from the Biopace or ovaltech designs.
Reportedly avoids the problems that they had.
Whatever it is, it sure seems to be working for Bobby J.
Marty
Biopace and Ovaltech are two different aproaches to the same percieved conflict, Biopace having the largest dia at the crank where Ovaltech has it at 90deg to the crank. I've ridden both and I like the latter best.