What would cause the drive chain to become stretched? Let me guess, Age, hotroding(which I seldom do), I have a 77 550 that I have commuted to work on for the past 3 years. Recently I have been hearing a tinkling metal sound when going over bumps and irregularities in the road. With causal inspection, I finally determined that the chain was loose and hitting against the cover that encloses the front chain sprocket. It seems as though this looseness has just occurred recently for no particular reason. Shifting seems to be little stiffer, but it shifts ok. Any thoughts?
Mike