Jan 17, 2002 11:10 AM
|I recently bought a 2nd hand CAAD4 from a LBS, its obviously had very few miles put on it. It looks (and sounds) brand new. At least it did until, having put no more than 50 miles on it myself, a creak has started coming from the bb area. I checked and re-greased the chain ring bolts, but no change. Then I booked it in to LBS to have the BB repacked, (dubious about this in any case due to lack of miles) but on the ride in the creaking completely stopped, so I didn't have it repacked after all. But by the afternoon, the creak was back again. Any ideas? It's really starting to annoy me. It seemed to have started after I left it in work near a radiator, could this have dried something up?
|re: CAAD4 Creaking||JimP|
Jan 17, 2002 11:16 AM
|I had a similar problem and it turned out to be the bottom bracket was not quite tight enough. Seems to be more of a problem with DuraAce BBs acording to the LBS.|
|Grease and tighten||Kerry Irons|
Jan 17, 2002 4:54 PM
|Per the other post, most BB creaking is due to no grease on the threads, not tight enough, or both. IIRC the BB should be torqued to 50 nm, which is pretty darn tight.|
|Plan B - try teflon tape||DaveG|
Jan 19, 2002 7:57 AM
|Agree that 1st step is to grease and tighten. If that doesn't work wrap some teflon tape (used for plumbing) around the threads.|
|Agree with Kerry||Ligon|
Jan 17, 2002 5:42 PM
|I have had the same problem on my cannondale mountain bike. Pull the BB and grease the cups and the threads in the BB shell. This should take care of the problem. Your LBS can not do much with the BB other than replace it since I'm guessing it is a cartridge BB.
|Agree with Kerry||pa rider|
Jan 18, 2002 3:37 AM
|I had the same problem with my CAAD4. Since my LBS sold me the bike, they put this white gup (better than grease) on my bottom bracket and fix cup (I didn't have to pay anything for the work). It hasn't creak since.
It's the Cannondale trade mark that they creak at botom brackets. The aluminum never meshed too good with BB. So if putting Park grease on doesn't work e-mail me and I'll ask my LBS what the name of the white gup.
|Agree with Kerry||wspokes|
Jan 18, 2002 7:41 AM
|The aluminum never meshed too good?? Not really sure i understand what is you mean with that...you almost make it sound like it is off sized and not calibrated correctly. I don't think this is the case. I think it is a basic rule of thumb that many of the manufacturers use little or thin coats of grease on the threads to save extra bucks. The white goop the shop used was probably a very good grade grease as compared with the manufacturers crap. Aluminum will definetly carry the noise also, it transfers the sound and magnifies it. If you ever had a REally bad bottom bracket in one of the cannondales, you can hear yourself coming miles away...it sounds like the bike is splitting apart. I heard a Klein coming up behind our chase group once in a race and jumped again just as I heard it getting closer. At the end of the race, another guy who jumped with me joked about how he should thank the Klein man for letting us know the chase group was closing in!
|it's improving my pedal action||TSlothrop|
Jan 18, 2002 10:02 AM
|Thanks for your advice on this, I'll get it sorted. But I've noticed in the last couple of days that by pedalling very evenly the noise isn't too much of a problem. So maybe Cannondale do it intentionally to make us more ergonomically efficient?|
|it's improving my pedal action||ridewt|
Jan 18, 2002 11:05 AM
|I think a lot of aluminum bikes do that. After some rainy rides, a creak developed on my LeMond. My LBS recommended a to repack the bb with a thin coat of plumbers tape on the threads. It seems to work.|| |