GXP BB replacement
Would this allow me to use my Shimano spec BB shells.
I know it says but it all seems too easy.Posted 3 years ago
I have swapped bearings in the drive side. They are common off the peg size. Not tried the non-drive side yet but have found a source. No reason to beleive it would not be a straight swap though. Just remove the circlip, press out, press new one in, replace circlip, job done.
I can’t remember the exact sizes at the mo but the link below “could” be the bearings needed
Drive side (can’t remember if it was 24 or 25mm internal dia so either)
orPosted 3 years ago40mpgSubscriber
The Hope one will only work with a Hope BB, as Hope don’t use the top hat arrangement.
I used to replace just the bearings in Shimano BB’s but a couple of years ago they changed the bearing width to a narrower, non-standard one to accomnmodate wider seals.
Your widget above looks good – I think I’ve got some spare bearings and a knackered GXP so I might get one of those and see what fits, as my last GXP only lasted 3 months 🙂
AndyRM – did you have to remove the top hat?Posted 3 years agoConan257Member
Adviser: I’ve not clicked any links or read any posts…
I got some GXP cranks a short while back and had a similar issue, no pennies at the time for a decent BB so I bought one of the £5 adapters.
They do work, sort of. Sometimes the crank spins inside the adapter (rather than the BB bearings spinning), and as such incurs friction making pedalling a bit more laboured.
I bit the bullet, bought a hope BB with the GXP adaptor. Much better and will almost certainly last me a lot longer.
I have a feeling, as the GXP and HT2 crank-tightening system puts different loads on their BB’s, that a GXP crank correctly tightened will kill an HT2 BB.Posted 3 years agoNorthwindSubscriber
Conan257 – Member
I have a feeling, as the GXP and HT2 crank-tightening system puts different loads on their BB’s, that a GXP crank correctly tightened will kill an HT2 BB.
A GXP crank correctly tightened should perfectly preload a Shimano BB. But getting it all right might be easier said than done.
I’ve dealt with this problem by deciding never to buy a shitey GXP crankset ever again.Posted 3 years ago
I’m agreeing with the last sentence above but its a bit late now. I have a perfectly good (of course that relative) XT BB that maybe worth a try with one of those thingies.Posted 3 years ago
Common sense says buy something that uses normal industry standard bearing as they are cheaper and better quality if sourced correctly . Ta people
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