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I have a PF30 adapter in my Spesh Camber, with a shimano bottom bracket holding an XT hollowtech crank
BB is knackered, so i need to replace - problem is when I try to screw it out, the adapter is turning in the shell, as opposed to the bb screwing out of the adapter
This is the adapter - http://www.chainreactioncycles.com/ie/en/sram-pressfit-30-to-bsa-adaptor-kit/rp-prod71306
any ideas? I know I can press the adapter out, but I want to keep it and re-use and just replace the bottom bracket
Tunr the other BB cup in the opposite direction to stop it unscrewing?
You'd be best off removing it and refitting it with some sort of loctite to keep it in place
cheers...
found this on the crc website:
[i]
However, the need of a replacement adapter kit arose when I came to fit a new bottom bracket - read on...) It would seem logical to simply unscrew the bottom bracket from this adapter's cups once they're installed on the bike... except that's NOT how you should proceed to remove your old BB/install your new BB. Instead, the press-fit cups of this adapter must be tapped (whacked?) out of the frame FIRST, ideally using a special drifting tool (like the Park Tool BBT 90.3). Then you use the small flats on the inner part of each cup to hold each cup in a vice while you then unscrew the drive and non-drive side bottom bracket from the threads. If you try and unscrew the BB from the adapter while it's in the frame, the pressure being exerted all around the press-fit section of the polymer cup is so great that the cups' inner threads will simply strip, no matter how carefully you undo your bottom bracket. It does seem illogical... but that's PF30 for you![/i]
TBF< I thought you had one of those metal sleeve type adaptors that you loctite in. Think FSA make them.
Another confirmation that I did the right thing by avoiding press-fit bottom brackets.
@davidtaylforth - in hindsight, I should have done exactly that - bought a better quality adapter, such as the Praxis one, instead of a piece of plastic.
I've sent it to the lbs, hopefully they can do something with it