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creaking bottom bracket(6 posts)

creaking bottom brackettmac13
Oct 10, 2002 12:52 PM
Bottom bracket has been creaking, recently replaced it (Ultegra), but the creaking continues. The crank and associated bolts are tight. I have a Litespeed and am told that this happens sometimes, any thoughts?
The "Shimano and Grease" problem. Buy Record. (nm)onespeed
Oct 10, 2002 1:01 PM
bzzztt! try again!merckx56
Oct 10, 2002 4:12 PM
The alu cups and the ti shell will always creak unless you use liberal amounts of anti-seize grease. Pull the bb and lather it up with the silver anti-seize or the gold Loctite brand ti prep. Don't be shy with the amount you use. The only drawback...don't get it on you and if you do, wash your hands immediately. A dime size blob of silver anti-seize will turn your entire person silver in about five minutes!
BTW there merak-boy, if you can get a sealed shimano bb unit to creak, I'll switch to Campy! And I'm talking axle/bearing creak, not creaks associated with loose bolts and the aforementioned problem!
Things you can trybrider
Oct 10, 2002 1:28 PM
First, try installing the BB cups (if you can call them by that term) with plumbers teflon tape.

If they still creak, try green loctite after installing (seeps into the gaps, but is a temp bond).

Or, it could be something in a weld -- check for cracks.
Torque and greaseKerry
Oct 10, 2002 4:32 PM
Litespeed recommends grease, and I have had great luck with it. In my experience, the reasons for BB creaking are 1) not enough grease on all surfaces and 2) insufficient torque (IIRC the Shimano spec. is 50 nm). Take everything apart, clean all surfaces and threads, grease well, and torque to spec. If that doesn't solve your noise problem, then it is likely coming from somewhere else (cleats, pedals, spokes, hub, QR, seat, seat post, bar, stem, chainrings, etc.)
Teflon tape worked for me. (nm)Ken of Fresno
Oct 10, 2002 5:48 PM