UN54 BB fitting help please
- Thread starter nsaints
- Start date
In hindsight maybe the link to the CRC one isn't that helpful :?
Here's mine - there's no 'E' in the part number
I'm not sure the 'e' in 'singapore' is valid to denote E type front mech either
I'll fit it how it is, and suggested as being OK by the other folk on the thread and keep a careful eye on it
I'll report back in a few weeks
Here's mine - there's no 'E' in the part number
I'm not sure the 'e' in 'singapore' is valid to denote E type front mech either
I'll fit it how it is, and suggested as being OK by the other folk on the thread and keep a careful eye on it
I'll report back in a few weeks
We_are_Stevo
Old School Grand Master
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If you have a spare spacer knocking around just slip it on the drive side before you fit it?
If it was an E-fit bb, it would say UN54E. That isn't an E-fit.
Always screw the drive side in first and make that tight.
I personally feel that plastic adjuster cups are better than metal as they do the job and they're less likely to sieze, although obviously you should still use anti-sieze (not grease, which is a feeble anti-sieze).
It is reassuring if the non-drive side adjuster won't go flush to the bb shell - if it goes flush against the frame, you can't be sure it's tight against the bracket itself.
Having said that, I have no experience of EBB setups, although I don't see why that should make any difference to what I have said.
Always screw the drive side in first and make that tight.
I personally feel that plastic adjuster cups are better than metal as they do the job and they're less likely to sieze, although obviously you should still use anti-sieze (not grease, which is a feeble anti-sieze).
It is reassuring if the non-drive side adjuster won't go flush to the bb shell - if it goes flush against the frame, you can't be sure it's tight against the bracket itself.
Having said that, I have no experience of EBB setups, although I don't see why that should make any difference to what I have said.
JamesM
Senior Retro Guru
Oh and just for the record I accidently bought an e-type shimano BB years ago. I had to fit a 3mm spacer on the DS to get the correct chainline and the NDS cup still had a small gap. I later (years later) replaced it with a normal UN54 of the same axle length which didnt require the spacer and guess what, same size gap on the NDS . That bike does around 4000 miles a year and the BB has never come loose.
. That bike does around 4000 miles a year and the BB has never come loose.
