Joined: Sep 2009
Posts: 4,697
Likes: 2,039
From: Up
Bikes: Masi, Giant TCR, Eisentraut (retired), Jamis Aurora Elite, Zullo, Cannondale, 84 & 93 Stumpjumpers, Waterford, Tern D8, Bianchi, Gunner Roadie, Serotta, Serotta Duette, was gifted a Diamond Back
I have some of the original biopace chain rings on my really old mountain bike. I never could feel any difference but I rarely ride that bike.