Originally Posted by
Burton
You want something compatable. Pulley diameter doesn't have to be spot on, but pulley thickness and bearing shaft diameters need to match exactly.
No, the pulley can't be too big, but as long as the hole is big enough that'll do. If it's much thinner or thicker you'd need to shim that pulley or the other pulley with a pair of washers.
It won't matter if the pulley's sitting a mm off-centre of it's bolt in the cage, and you can calmp it centred if you like anyway.
Originally Posted by
nhluhr
There is literally nothing better than the original equipment pulleys. All those aftermarket machined aluminum things suck.
Yeah, but a cartridge bearing craps all over a bush. The best pulleys are the fancy BB plastic OEM ones... haven't seen plastic aftermarket ones aside from cheapies.