Morning all, firstly, I've done a search and can't find the answer, so:
I've got a 2009 spec Trek 1.5 (the green one) with a 50/34 on the front (Tiagra front, Sora rear) and when I'm on the small front ring and the smallest 3 rear gears the chain rubs against the large ring. Is it out of alignment or something? No amount of fettling by me seems to be able to cure this.
I've put up with it until now but a super smooth Cervelo went passed me this morning as quiet as a summer breeze and my bike sounded like a concrete mixer!
Any advice appreciated!
I've got a 2009 spec Trek 1.5 (the green one) with a 50/34 on the front (Tiagra front, Sora rear) and when I'm on the small front ring and the smallest 3 rear gears the chain rubs against the large ring. Is it out of alignment or something? No amount of fettling by me seems to be able to cure this.
I've put up with it until now but a super smooth Cervelo went passed me this morning as quiet as a summer breeze and my bike sounded like a concrete mixer!
Any advice appreciated!