BB30 BB into a carbon frame - grease or no grease?

daniel_b

Morning all,

waiting for the tool to arrive to carry this out.

Frame is PX Exocet 2, full carbon.

Should I look to grease the area the bearings will sit in?

It's the setup with the retaining clips etc.

daniel_b

Just checked the frame, and it has a metal sleeve so grease it is I assume.

MattFalle

Copperslip if you're going that route.

daniel_b

MattFalle said:

Copperslip if you're going that route.

Along these lines?

MattFalle

Perfecto my man.

Copperslip for things that don't move, moly for that those that does

david37

i dont use copperslip for bb30. I use a bearing seating compound. loctite 641 is the stuff for the job.

This will help ensure the bearing sits without creaking but when the time comes to replace you can knock them out.

The yellow (641) is the one for that application. this is the medium strength one.

On a bike I would use copperslip on threaded fittings that arent going to move such as threaded bottom bracket shells.

Key to the job youre doing is thorough cleaning / degreasing of the the surfaces before installation of the bearings

david37

david37 said:

i dont use copperslip for bb30. I use a bearing seating compound. loctite 641 is the stuff for the job.

This will help ensure the bearing sits without creaking but when the time comes to replace you can knock them out.

The yellow (641) is the one for that application. this is the medium strength one.

On a bike I would use copperslip on threaded fittings that arent going to move such as threaded bottom bracket shells.

Key to the job youre doing is thorough cleaning / degreasing of the the surfaces before installation of the bearings

i havent had any, not one, creaking BB30 BB doing it that way.

I personally used bb30 for years before moving on to PF30 and I also run a bike repair / maintenance business for what its worth. perhaps I'm just lucky.

lesfirth

david37 said:

i dont use copperslip for bb30. I use a bearing seating compound. loctite 641 is the stuff for the job.

This will help ensure the bearing sits without creaking but when the time comes to replace you can knock them out.

The yellow (641) is the one for that application. this is the medium strength one.

On a bike I would use copperslip on threaded fittings that arent going to move such as threaded bottom bracket shells.

Key to the job youre doing is thorough cleaning / degreasing of the the surfaces before installation of the bearings

If everybody did this press fit bottom brackets would not have the reputation they have.

daniel_b

Intriguing - so the idea is it bonds to a reasonable degree, but when sharply tapped/hit the bond breaks?

I never knew there was such a massive array of options out there.

nibnob21

Yeah Loctite 641 is used for press fits to account for any teeny tiny variations in the curvature between the male and female surfaces, such that these gaps are taken up and the load transfer is even around the circumference. I use it for the pivot bearings in the swingarm of my MTB, for example.

david37

daniel_b said:

Intriguing - so the idea is it bonds to a reasonable degree, but when sharply tapped/hit the bond breaks?

I never knew there was such a massive array of options out there.

for sharply tapped read T waatted

amrushton

you are Hambini and I claim my £5

daniel_b

Surely there would be loads of censored words if that was true.

P.S I watched one of his videos from 3 years ago, and there was no swearing, and it was all quite normal - shame his style has changed drastically, generates more views overall I guess.

slowmart

I use these - fit and ride in golden silence