I was curious if anyone here uses Q-rings or similar oval cogsets? I have a freind who can't shut up about them, but I wanted other racers' input.
Do you like them? Do you feel a differerence? Do you feel that any improvement you've seen since adding them has resulted from the oval chainrings? Any caveats or other considerations?
Better yet, can anyone here cite sceintific studies on power putput related to implementing the oval chainrings?