rear wheel alignment rubbing chainstay.
My first post here, I need some advice. My cannondale cross bike has an issue with rear wheel alignment. I set the wheel straight and clamp it down with the quick release, but after I hop on a ride, the wheel moves back to where it's rubbing on the chainstay.
I flipped the bike over so I could fool around with the wheel in the drop outs and I notice a little "wobble" on one side. when the wheel is just naturally sitting in the drops it is rubbing the chainstay. I have to correct the wheel to get it away from the chain stay, so that when I ride the rear wheel "Wants" to go back to the position where it rubs?!
does anyone know what I'm talking about? does it mean my frame is bent?
it's an aluminum 2005 Cannondale Optimo, it has been raced one full cross season, and ridden as a communter/ everyday for the three years that I have owned it. I've read that aluminum can stress... whatever that means? Are the Awesomo's days numbered?