What I would really like to fix on my Trek 4100, or maybe a problem with all bikes is that when I go off the curb or do something that shocks the rear part of the bycycle the chain hits lower back end of the frame. There are marks of where it hits and I feel if I could prevent that damage it would be great. What would you recommend to remedy that problem?
I was thinking of wrapping that part of the frame with electrical tape?
The noise of when the chain hits makes me feel uneasy.