|creaking sound||Dave Hickey|
Apr 6, 2001 12:05 PM
|I have a creaking sound in the BB area that is driving me crazy. I only creaks when I'm out of the saddle. My bike is a carbon frame with a Dura Ace 7410 BB. The BB has about 2000miles. Here's what I've done so far.
1. Tightned crank bolts, chain ring bolts.
2. Tightned BB shell
3. Tightned pedals and cleats
4. Tightned headset
|re: creaking sound||Merlin666|
Apr 6, 2001 12:12 PM
|Can't tell you first hand but check out the reviews on the D/A BB alot of people rag on it and suggest using a ulterga|
|re: creaking sound||Slow Ned|
Apr 10, 2001 10:50 AM
|Actually, the ragging going on was regarding the current model Dura Ace bottom-bracket, the 7700, and not the one referred to here (which is a 7410).|
|re: creaking sound||Markar|
Apr 6, 2001 4:45 PM
|What type of wheels are you using? A buddy had the same thing on a Lemond and it turned out that the skewer in his Rolf Vector Pro rear hub was not tight enough.|
|re: creaking sound||Dave Hickey|
Apr 6, 2001 4:55 PM
|Velocity with D/A hubs. I'll try it and let you know. Thanks for the tip|
|re: creaking sound||DrD|
Apr 6, 2001 5:04 PM
|Tightening often isn't enough for a long term fix - here's a ten step creak elimination procedure: |
1. remove the cranks, clean the threads on the crank bolts and inside the BB axle, as well as the splines/tapers on the BB spindle.
2. remove the bottom bracket, clean the threads in the frame and on the bottom bracket - use teflon tape on the threads, and re-install.
3. remove the chainring bolts and chainrings. Clean the chainring/crank spider interfaces, and grease them. Clean the chainring nuts and bolts, then grease the outside of the nuts, and the threads on the bolts. Reassemble, and tighten everything down.
4. grease the crank bolt threads, grease the BB spindle and reinstall the cranks.
5. remove the pedals, clean the threads on the pedal spindle and inside the crank, then regrease.
6. remove the stem, clean, grease the stem (if it's a threaded stem, grease everything inside the fork steerer, and the expander wedge/stem interface - if it's threadless, the inside of the stem, and the threads on the binder bolts.
7. remove the handle bars, clean the inside of the stem clamp and the clamping surface of the bar, sand out and burrs, clean, grease, and reassemble.
8. remove the cassette off the rear wheel, clean the freehub splines, grease them up, then reinstall the cassette (while you're at it, put a drop of oil on the quick releases).
9. make sure your levers are on tight (tighten the clamp)
10. though this obviously isn't the cause - while you're at it, remove the seatpost, clean and regrease it, then re-install (also grease the saddle rails)
|BB went bad||Dave Hickey|
Apr 6, 2001 6:12 PM
|Thanks for the tips DrD. I changed the BB with another and it stopped the creaking.|
|Be careful with that statement||Kerry Irons|
Apr 7, 2001 6:04 AM
|It may well be that just taking out your existing BB and reinstalling it would have cured the problem. DrD's tips are good and say to do just that. Even if you didn't clean anything when you swapped BBs, you still moved things around a lot. When noises are really coming from the BB, cleaning, greasing, and proper torque are almost always the cure. So don't be sure that it was a bad BB - only when you've done the above and it still creaks can you actually blame the BB.|
|Be careful with that statement||Dave Hickey|
Apr 7, 2001 9:20 AM
|I know I can clean the BB and re-grease the threads, but can I grease a sealed cartridge BB? THe BB is a D/A 7410.|
|Be clear with that statement||Kerry Irons|
Apr 8, 2001 4:39 PM
|When I said grease, I meant greasing the threads. Dirty or dry BB threads are the source of many clicks. Under-torqued BBs are the source of many more clicks. Usually bearing problems, or actual BB failures tend more toward clunks than clicks. Anyhow, my point was that most BB noises can be eliminated by removing the BB, cleaning the bike and BB cartridge threads, greasing both sets of threads, and reinstalling the BB with proper torque.|
Apr 9, 2001 9:50 AM
|Shimano advises not greasing square spindle BB and crank flats. They do advise greasing on splined designs.|| |