BB won't go any more !

[fossyant]

It's fine. Leave it. Some bite into the cassette earlier than others. Don't start tightening it more as its plastic.

I tend to go for the un54 or 55 due to the metal lock ring.

 

[fossyant]

The drive side is the one that tightens against the frame. The non drive side just holds the BB cassette in place. I find the metal lock rings fit better.

 

[DEFENDER01]

Just had a look at mine and it has some thread showing both sides.
I would just make sure you have about the same amount of thread showing both sides and thats it.

 

[Citius]

I would just make sure you have about the same amount of thread showing both sides and thats it.

I wouldn't - not if you want to get the axle to seat properly. All you have to do is make sure the cups are tight against the bearings. The amount of thread showing after that is incidental.

 

[Doyleyburger]

The cups are very tight. @Citius I'm unsure of the actual make of the BB, sorry.

 

[Doyleyburger]

Thanks everyone. Much appreciated

 

[DEFENDER01]

I wouldn't - not if you want to get the axle to seat properly. All you have to do is make sure the cups are tight against the bearings. The amount of thread showing after that is incidental.

Not sure what you are getting at the axle will seat properly it will just move it to the left or right and make the axle sit more even.
I am looking at it from an engineers point of view.

 

[Citius]

Not sure what you are getting at the axle will seat properly it will just move it to the left or right and make the axle sit more even.
I am looking at it from an engineers point of view.

Those BBs have one fixed cup and one adjustable cup. The fixed cup screws in as far as the flange stop allows it to. The adjustable cup screws in as far as is needed in order to tighten onto the NDS bearing. Once the cup has done that, the amount of thread left uncovered is irrelevant, as it won't tighten any more and loosening it again will only allow the axle to move in the BB.

So from an 'engineering point of view', your engineer's point of view won't work.

 

[midlife]

I thought the drive side had a flange that was meant to seat against the shell so is in a fixed position?

Shaun

 

[midlife]

Beaten again

Shaun

 

[Citius]

sorry..

 

[Doyleyburger]

Those BBs have one fixed cup and one adjustable cup. The fixed cup screws in as far as the flange stop allows it to. The adjustable cup screws in as far as is needed in order to tighten onto the NDS bearing. Once the cup has done that, the amount of thread left uncovered is irrelevant, as it won't tighten any more and loosening it again will only allow the axle to move in the BB.

So from an 'engineering point of view', your engineer's point of view won't work.

Yep that makes a lot of sense. Cheers