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Brommers-
Thanks. I think I’ve actually just found what the problem is. The type of bearing used in the Race Face bb might not be the most appropriate, so I might just switch them to a higher quality SKF or Fag bearing. Not the cheapest bearings in the world but cheaper than a new BB and ought to solve the problem. Only issue might be the clearances getting the new bearings in because of the very thin outer race.
Jonny69
Probably better to ask here than AQA. I have one of these Race Face bottom brackets for their cranks with 24mm axle, which is known for premature death. Mine has indeed died prematurely. I’m a bit new to this type of bb. Are they interchangeable between brands and, if so, which one should I get? It’s for a threaded 68mm shell.
Edit: or are the (6805 2RS?) bearings replaceable? Without taking it all off the bike, I’m not actually sure what the common failure is, if it’s the bearings or if it’s the plastic top hat shims that have collapsed or scrubbed themselves to death.