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but they still don't spin very freely
Just clean them.
some weird star T driver thing?
T25 Torx .
I'm guessing that a Campag cassette lockring is going to need a different tool to a Shimano one right?
Yes.
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Remember to use thread lock when you reinstall the jockey wheels, otherwise they will unscrew, your chain will have a strop and trash the derailleur(s). I've learned this lesson the hard way.
snottyotter
superbagneres
@drn22
Hiya
Am a little bit out of my (shallow) depth trying to fit an old Athena 11 speed groupset bought off ebay.
For the rear derailleur, I've taken apart and cleaned the jockey wheels (no ball race - just solid bushings) and used Fenwicks assembly grease reassembling them, but they still don't spin very freely.... wrong grease??
Also, what do I need to attach it to the mech hanger? is it some weird star T driver thing? What's wrong with allen keys??!
Very lastly, I'm guessing that a Campag cassette lockring is going to need a different tool to a Shimano one right? Otherwise that would be too easy!
Thanks in advance for any assistance