Hi all. Went for a windy ride on my C5 tnight. All was well, until I was about 5 minutes into the ride. When pedalling, I noticed a noise on the crank. It sounded as if it was grinding. However, it may not have been the crank.
I ignored it, and it carried on.
I pulled over to visit someone, and then rode off shortly after. When I began to pedal, the chain came right off. It is was still intact, so I had a go at putting it back on. To my surprise, I managed it!
About a half-mile later, I pedalled again, and the chain came off again. This time however, I couldn't get it back on so that it would stay on.
It seems incredibly 'slack', and the tensioner barely touches it. Has it stretched? If so, it's happened very quickly. Don't know what to do. Have I ruined it?