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It works fine with your mech!
Didn't we do this last time and conclude that the mech itself was bent?
I would never extend a cable if I could do it "properly". Save some time now but cause bigger issues down the line.
hippy-
Yes. Now I've got a new mech. But it needs the wolf tooth to work on my frame with the 42T.
I've still got your one on my shelf too, let me know when you're around and I'll give you it back.Sure, I've started fishing for the junction box. Good chance to change the BB while I'm in there, but can't find the new one I bought a while back, so I'll have to buy another one.
I might be able to save a bunch of work and just go back to the 40T but I think there might have been similar issues with that as well.
frank9755
It works fine with your mech!
I've just put the wolf tooth in now and that has fixed it. It needed an extra quarter turn backed off the limit screw. Without it, it would do an upshift after a few seconds, presumably because it knew it wasn't quite on the big sprocket properly. I need to test it on a hill but it is working on the stand anyway.
The WT gives it space to get the extra quarter turn (and a bit more).
It's still really close to the spokes, though. I guess that is normal, just I don't usually look that close.
It has created another problem which is the cable is stretched really tight, which I'm not comfortable with. So I'll have to go fishing in the frame for the junction box and put a longer one on.
Unless Di2 extension cables exist... Which would save me half an hour's work at the expense of risk of water ingress and other failures.
Edit - looks like Di2 extension cables don't exist although plenty of other people are looking for them too! I'll have to fish the junction box out.