Dogtrousers
Kilometre nibbler
I have an incredibly minor problem.
I have R7000 105 with a 11-34 cassette. Occasionally changing up out of bottom gear (ie from the biggest sprocket) becomes a bit sluggish. If I don't do anything, after a while the mech starts to chatter a bit in bottom gear. If I still don't do anything, eventually it won't change up at all. The first time it happened I just stopped using the biggest sprocket and left it to investigate when I got home.
The problem is that the "End adjusting bolt" aka B screw is coming undone. No 4 in the diagram below. The solution is to stop, do the B screw up a few turns and carry on. It'll be fine for a few more rides at least. All very minor. Completely liveable-with.
But why? I've never had a this screw undo itself like this before. Should I put threadlock on it or something like that?
I have R7000 105 with a 11-34 cassette. Occasionally changing up out of bottom gear (ie from the biggest sprocket) becomes a bit sluggish. If I don't do anything, after a while the mech starts to chatter a bit in bottom gear. If I still don't do anything, eventually it won't change up at all. The first time it happened I just stopped using the biggest sprocket and left it to investigate when I got home.
The problem is that the "End adjusting bolt" aka B screw is coming undone. No 4 in the diagram below. The solution is to stop, do the B screw up a few turns and carry on. It'll be fine for a few more rides at least. All very minor. Completely liveable-with.
But why? I've never had a this screw undo itself like this before. Should I put threadlock on it or something like that?