Is my front crank warped....???
No matter what ring I am in I get chain rub on the front deraileur>>>BUT only on the down/power stroke with my right leg. If I pedal or apply pressure only with my left leg the chain does not rub. I tried to watch the big ring alignment while I am mounted and riding the bike, and without crashing head long into a tree it appears that the rings are drifting left to right. I Don't have a stand and I can't get it to happen if everything isn't under load.....its a fairly new bike, 300 kms? and has never been beaten or bashed......any thing need to be torqued??? before I get hosed by my LBS looking for some advice...