Rear derailleur hanger - stripped threads
Hi all,
I had an off a couple of weeks ago, right hand side down, rear derailleur took a hit and hanger bent.
I managed to pull it back into line and bizarrely the gears seem ok.
However, I wanted to replace it, but in haste I've managed to strip the thread (head) on one of the bolts that attach the hanger to the frame. It's basically rounded.
I can live with it for now and could poss use a hanger alignment tool to tune it, but it will need to come off eventually!
Any tips?
I had an off a couple of weeks ago, right hand side down, rear derailleur took a hit and hanger bent.
I managed to pull it back into line and bizarrely the gears seem ok.
However, I wanted to replace it, but in haste I've managed to strip the thread (head) on one of the bolts that attach the hanger to the frame. It's basically rounded.
I can live with it for now and could poss use a hanger alignment tool to tune it, but it will need to come off eventually!
Any tips?
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Posts
It's a carbon frame (alloy dropouts), so bit worried about using too much force (perhaps unnecessarily worried).
The bolts are really small, but have pretty wide heads
Could you cut a slot in the bolt head with a Dremel type disc, perhaps?
Best bet is to get hold of a suitably sized screw and stud extractor bit. Carefully drill a pilot hole into the centre of the screw, then follow that with the stud extractor. Once it starts to bite it should free the screw.
Or if you don't want the hassle / expense / fear of breaking it yourself, any self respecting LBS should be able to do it in a couple of minutes.
Was also gonna have a try with a torx key, one size up from the hex key size - will have a go this weekend
That's always an option; tap it in so it bites a bit before you try to turn it.
Tiny hex sockets always make me nervous; I've replaced the bottle cage bolts on my winter bike for ones that take a larger allen key.