Quote:
Originally Posted by vqdriver
my new mtb is the first with a bb30 crankset. my understanding was that the bearings were pressed in the frame and that was that. no more bb for different cranksets. now that i'm looking for a new crankset for the mtb, i see that i need a specific bb for it. what am i missing? so not all bb30 cranks fit in all bb30 bbs?
fwiw, specifically the race face next sl g4 using their cinch system. currently i have a sram crank.
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generally speaking, once you have bearings pressed into the shell, you won't need a new BB for different cranksets but you may need a new BB30 adapter for whatever the crankset uses. not everyone makes a BB30 crank; FSA, Sram and Cannondale do for road, not 100% sure who does for MTB. for example, if you buy a Sram gxp or Shimano crankset, you'd need the appropriate adapters. they're usually just delrin cups that go between the crankset and bearings. they don't need to be replaced when you replace the bearings, only if you swap to a different standard.
THAT SAID, I don't know the details of the race face next sl g4, nor their cinch BB. so there may be something special you need to do there. either adapter wise or with a new BB entirely. might need to research further there...
09-13-2017, 05:56 PM
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