Re: B-tension screw

On 5/21/2025 1:50 PM, Beej Jorgensen wrote:

In article <100l37d$2u569$4@dont-email.me>,
zen cycle  <funkmasterxx@hotmail.com> wrote:

As andrew notes the derailleur body should move when the B-screw is
adjusted. It is doesn't, see if the screw end of the screw is actually
contacting anything.

 I'm not sure how to peer into the body of the derailleur (maybe the
cover just pops off?), but it most definitely feels like it's not
contacting anything. It turns freely by hand the full range, and it even
wobbles back and forth a bit if you jiggle it. The only place it feels
like it's making contact is on the threads it screws into.
 -Beej
 

Sounds to me as if the suggestion that Andrew made where the threads are stripped may be the problem. You shouldn't be able to turn it by hand, and it certainly shouldn't be wobbly. Unfortunately, the only fix for this is a new derailleur (unless you feel like tapping out a larger hole with the next size screw).