O.symetric chainrings look to have made major inroads in the pro field this year, appearing on over half of the Team Sky bikes and David Millar’s (Garmin-Transitions) Felt F1 (via Race tech: Giro d’Italia road race machines - BikeRadar Gallery)
Not seen this before, at first it didn’t make much sense to me but after a bit of a read it does. Basically because of the angle of the leg at top and bottom dead centre the muscle creates less force than at right angles, so this unusually shaped cog compensates for this and makes the force equal through the cycle. interesting well I think so
This sounds like a brilliant idea from what I can understand, I think the only way I could really decide if it works though is to have a go myself.
