pkovo
Well-Known Member
A used frame I recently bought came with a threaded GXP BB and GX Cranks. While working on something else, I noticed I have a small amount of play in the BB. I took it apart, regreased everything and retorqued it, but still get a very small amount of play. Actually, i did that twice, and couldn't eliminate the play. It is very slight though, and i don't actually notice it while riding, just when I grab the end so fthe crank arms and push/pull on them. Upon disassembly the only oddity I noticed is the non drive side dust cover was on backwards, which I corrected on reassembly.
Having never had a bike with this BB/Crankset, I was surprised to find the way it assembles it really one fastens the crank on one side, between the bearing and the step-down on the spindle, and the other side kind of "floats" for a lack of a better way to put it. I was most surprised to find on the drive side there is a plastic "dust cover" that has a sleeve that slides between the bearing inner race and the spindle. To me that seems like a likely place for failure and possibly the source of my play....Its just plastic and seems kind of inprecise. Anyway, my questions are:
Are these known to be problematic? Anything obvious I am missing? Is a new BB likely to be all that is needed?
I was going to just grab a new BB today on my lunch break since they are quite cheap, but this whole design left me feeling a little unimpressed so I hesitated. I have a set of Race Face Turbines currently sitting on the shelf that i could repurpose to this bike instead. Would just need to buy a new chainring for them. Color will stand out, but if it works, I don't really care.
Trying to gauge the better option and hoping someone on here that does more wrenching than I might have some insight.
Thanks!
Having never had a bike with this BB/Crankset, I was surprised to find the way it assembles it really one fastens the crank on one side, between the bearing and the step-down on the spindle, and the other side kind of "floats" for a lack of a better way to put it. I was most surprised to find on the drive side there is a plastic "dust cover" that has a sleeve that slides between the bearing inner race and the spindle. To me that seems like a likely place for failure and possibly the source of my play....Its just plastic and seems kind of inprecise. Anyway, my questions are:
Are these known to be problematic? Anything obvious I am missing? Is a new BB likely to be all that is needed?
I was going to just grab a new BB today on my lunch break since they are quite cheap, but this whole design left me feeling a little unimpressed so I hesitated. I have a set of Race Face Turbines currently sitting on the shelf that i could repurpose to this bike instead. Would just need to buy a new chainring for them. Color will stand out, but if it works, I don't really care.
Trying to gauge the better option and hoping someone on here that does more wrenching than I might have some insight.
Thanks!