Originally Posted by
rndstr
Hey Scrod, I bought a Phil Wood bottom bracket for my omniums but it seems its non-driveside's hole is ~24mm in diameter while the one on the original gxp bb is 22mm. There is also a clear wiggle room if I put the cranks in which doesn't happen on the original one.
The driveside is 24mm on both bbs.
Any idea whether I'm doing it wrong or got the wrong bb or I should use an adapter?
Edit: I now found
a post that explicitly says "
SRAM's GXP cranks have a 24mm spindle that steps down to 22mm on the non-drive side." which would suggest that I got the wrong PW BB?
You bought the right BB but to use it with Sram cranks you also need to buy the Phil Wood Sram/Truvativ adapter, which needs to be pressed in (like a cartridge bearing) on the NDS after the plastic dust cap has been removed. Installing the adapter will be tricky without using an actual bearing press.
https://www.philwood.com/products/bbpages/outboard.php
FWIW, if you ordered it directly from Phil Wood's site they would have pressed in the adapter for you had you specified you were using it on Sram cranks. The ones we order for the shop always come pre-assembled.