What grease for BB?

giant_man

HI - about to change my Record bottom bracket with like for like, but wondering what grease to put with new one. Heard that Loctite is good or any others? thanks

ride_whenever

Do locktite make grease? I thought they only did superglue and threadlock!

I tend to use seriously purple grease, seems to work. A little copperslip is best as it is designed for static applications.

Monty Dog

I presume you mean for your BB threads? I'd use an anti-seize or assembly compound rather than grease as it is a static application. For English threads Copaslip is OK, but for Italian I'd use a medium grade Loctite to prevent the drive-side cup from coming undone. As for greasing the tapers - this debate has raged longer and more fervently than the Shimano vs Campagnolo debate!

giant_man

yes i did mean the threads thanks for that. I'll get some copaslip.

Which parts are the tapers btw?

Monty Dog

Sorry, I should have clarified are you fitting a separate BB or an external BB Ultratorque unit? The tapers are the square ends of the spindle on a separate BB unit over which each crank arm fits. The taper relies on the wedge-effect of the tightened bolt to force the soft aluminium up the steel spindle - over-tightening, which could be attributed to greasing the tapers has been reputed to lead to accelerated failure of the cranks.

giant_man

It's a separate BB Monty, square tapered 2003 Record. Thanks for that excellent explanation.

bobtravers

Any kind of synthetic grease will do the job...

on the road

I use copper grease on mine.

Frank the tank

If you can lay your hands on aero grade hylomar sq32 it's very good as it never dries out.