I have an ASR5 which suddenly is making a plastic grating/creaking noise whilst in the lower (smaller) gears, obviously exaggerated by the CF swingarm. I’ve checked all the pivot bolts, shock bolts, QR, cassette lockring, mech, chain etc etc I can’t find anything loose or rubbing on the swingarm.

FWIW it happens mainly under power, such as trundle up a climb and is rather irratating – imagine errr, errr, errr, errr, (FFS), eeer, eeer, etc.

I’ve just replaced the BB and the noise occurs before and after the new BB.

Any ideas?

Knees.

It doesn’t like you and the way you peddle.

Front mech rubbing the tyre as the frame flexes under your awesome torque!?

Rorschach – Member
Front mech rubbing the tyre as the frame flexes under your awesome torque!?

Thats it! Er actually no far from it… 😳