RoadBikeReview.com's Forum Archives - Components
Help, bottom bracket still creaking(10 posts)
|Help, bottom bracket still creaking||tmac13|
Oct 21, 2002 9:37 AM
|So my bb is still creaking (loudly!), here's what I've done so far, any ideas?: (Litespeed Tuscany w/ Ultegra, 18 months old) |
Replaced bb, used ti prep, wrapped threads w teflon tape
lubed front derailler clamp
lubed seat post and rails
replaced shoe cleats
crank and chinring bolts are tight
I suppose my frame could be cracked, any ideas?
|A few other ideas||spookyload|
Oct 21, 2002 2:33 PM
|Take the teflon tape off. If it was needed Shimano and/or Litespeed would tell you to use it. Make sure it is the BB. What I thought was my bb was actually the front hub on the Ksyriums. Another place that can cause creaking is the seat collar or seatpost bolts themselves. Creaks can reverberate throughout the frame and can be very hard to isolat.|
Oct 21, 2002 4:51 PM
|Nowhere on your list do I see "torqued to spec." If you don't use a torque wrench, it is unlikely that you tightened the BB enough. Grease is what Litespeed recommends (not anti-sieze, not plumber's tape). Other sources of noises include spokes, hubs, QRs, pedals, cleats, saddles, seat posts, stems, bars, shoes, cassettes, etc. All of these have been the source of "BB noise" for different riders.|
|With due respect,||TJeanloz|
Oct 22, 2002 6:59 AM
|Kerry, I know that you spoke with Litespeed a few years ago, and have been repeating the 'grease only' instructions since. However, the tech support guys at Litespeed have seen the light, so to speak, of using teflon tape for BB installation. They don't believe it's necessary in every case, but do recommend it if there is a 'clicking' problem.|
|With due respect...part 2||PsyDoc|
Oct 22, 2002 9:46 AM
|Shimano's instructions specifically state that you should not grease the BB, even though I have always greased the BB and used a torque wrench on the two ti bikes that I have owned and have not had a problem. Any idea why Shimano would suggest not using grease? I did have a situation last year where I thought the BB was "click'n-and-a-tick'n", but it turned out that the bearings in my rear wheel were bad.|
|With due respect...part 3||Kerry|
Oct 22, 2002 4:31 PM
|I've been using grease on my Ti frame/Campy BB for 5 seasons, and the only noise problems I had were with the original installation - copper anti-sieze. I have used tape, but not really found any benefit over grease. I'm not saying there is anything wrong with tape or anti-sieze, just that grease works fine. I don't think that Litespeed has "seen the light" I just think they are saying tape is OK. I still think the problem for most people is not enough torque - I've seen this over and over. I was amazed how much force was required once I got a good torque wrench.
Regarding the "Shimano says no grease" recommendation. This is news to me. Are you sure this is not in regards to square taper axle faces? I can't imagine assembling aluminum threads without some sort of grease/tape/anti-sieze.
|the recommendation is in their new install instructions...nm||PsyDoc|
Oct 23, 2002 3:35 AM
|I don't think Litespeed has 'seen the light' either...||TJeanloz|
Oct 23, 2002 4:45 AM
|I agree that many BB problems can be traced to insufficient torque. But one longstanding issue I have with advice given on this board (and other places, including the LBS), is that somebody spoke with a tech support person at XX major company, the tech support guy said something off-the-cuff, and then the remark gets repeated like it was handed down to Moses. Things at tech support change; tech support people say stupid things; and their word should not be taken as the gospel. Oftentimes, they have to repeat whatever the 'official' line of their Company is, whether it's right or not. Also, tech guys aren't in the field- they understand their product, but they don't deal with customers on a day-to-day basis, they haven't built nearly as many of their frames [and seen them ridden] as a good shop wrench has. The best feedback a wrench gets is from his customers, and this feedback rarely makes it back to the factory.
I agree with Litespeed that teflon tape shouldn't be necessary, but for some reason, it solves a problem.
|re: here's how I got rid of the noise||Ivar H|
Oct 22, 2002 2:26 PM
|I had at noise from my Ultegra BB that neither I nor the expert cycleshop could do ayway with, until I consulted the FAQ on Shimanos homepage (http://www.shimano-europe.com/cycling/index.phtml
search words: noise buttom bracket) and found this piece of advice:
"Tip to undo the noise from the bottom bracket
In many cases, the bottom bracket is not assembled with grease. This may result in some clicking noise when force is applied to the pedal, regardless of the frame's material. We recommend to assemble the bottom bracket unit with grease; in the picture above you can see where to apply the grease. When assembling the unit, always first assemble the main body, than the adapter. Tighten the two parts with a torque between 50 and 70 Nm. We recommend to use Shimano's Workshop Lubricants".
That worked for me - though I used 15 year old campagnolo grease. Hope it will work for you too.
|do not ignore this suggestion...||philippec|
Oct 23, 2002 2:04 AM
|take off your front and back QRs, oil and grease the bejesus out of them (especially inside where the cam is located) and re-install them. I "know" that the sound is not coming from there, but I have seen countless smiles appear after doing this to "hopeless" creaking cases before....trust me!