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Is that direct mount and you need the adapter bit?
https://wheelsmfg.com/blog/standard-mount-vs-direct-mount-derailleur-hangers.html
[Edit]: Nevermind. took me a while to see what you mean
[Edit 2]: Maybe you can find a replacement "b-link" or "Bracket Axle Unit" that has better purchase? Like this one, although that's also a reach extender https://pilo.co.il/s10-adapter-for-shimano-shadow-direct-link-rear-derailleur.html
Hi smart bike people,
I’m trying to put a new 105 derailleur on my old Roberts steel.
On the new mech, the bracket projection bit has very little purchase on the hanger end tab - a combination of short pins on the mech bracket, and a raised face on the hanger.
Previously the bike had a sram rival mech with a much wider and deeper projection, so this issue never came up.
Is this too sketchy?
Is there a solution that doesn't involve a new hanger?
Thanks for any help!
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