|Help if you can||The Human G-Nome|
Sep 4, 2003 1:16 PM
|creak problem with some detail:
.i have an aluminum Ciocc with a carbon fiber fork and steering tube, full Chorus/Record. a really horrible creak developed that only rears it's ugly head when i'm out of the saddle and especially on hard, uphill efforts. the chain has been replaced, the drivetrain has been removed, cleaned and reassembled, the headset has been adjusted - still the horrible creak.
then i noticed that if i'm off the bike standing up and then stand on just one peddle it will make that same noise - once. if i get off and stand on the peddle again the noise won't happen. BUT, if i walk to the other side, the same thing will happen - one loud creak, but if i stand on it again... nothing. any advie on how i should proceed? fork? how the forks addresses the frame? lube on carbon fiber steering tube? what should i try?
|re: Help if you can||amper|
Sep 4, 2003 2:20 PM
|Did you check the tightness of the pedals to the crank arm?|
|the pedals are fine (nm)||The Human G-Nome|
Sep 4, 2003 3:11 PM
|Have you wrapped the treads of the bb with teflon tape? nm||Lone Gunman|
Sep 4, 2003 3:04 PM
|Have you wrapped the treads of the bb with teflon tape? nm||The Human G-Nome|
Sep 4, 2003 3:13 PM
|haven't done that. my LBS worked on the bike though. not sure if they treated the BB which is record. do you think that might be a possibility?|
|re: Help if you can||gtx|
Sep 4, 2003 4:06 PM
|Process of elimination. AL frames tend to make things worse--tend to amplify more. Check the bb--threads should be greased, bb should be properly torqued, and with the Shimano bbs at least I like to use Permatex non-drying gasket sealant where the cartridge body comes into contact with the non-drive cup (this tip came from someone at Shimano--but I'm not familiar with the current Campy bbs). Cranks should be propely torqed. Pedals or cleats? You also need to check the headset, the bar/stem and stem/steerer. Doesn't sound like it's the seat or seatpost. One easy thing to do is put different wheels on your bike and see if it goes away--if it does than it's got to be the cassette or qrs or spokes or something. That's all I can think of now, but good luck!|
|re: Help if you can||10speedfiend|
Sep 4, 2003 4:10 PM
|Not a mechanic, but have ridden bikes a while. I would start off with the easy things first. Before the creak did you change or alter anything? Have you tightened the chainring bolts? Crank arms are tight? You said you dissasembled and cleaned, did that help at all? Have you inspected the frame for cracks? Are you sure it is not your bars within the stem? Might want to take the bar out of the stem, clean with alcohol and a 3m scratch pad and re-assemble. I use a VERY thin coat of grease, but I know somebody is going to say that is dangerous. I believe after a while a film of Aluminum oxide forms between the bar and stem and causes a "creak" when you pull/push on the bars (seatposts too). Just things that I have found that causes creaking noises, hopes this helps.
|re: Help if you can||Eric_H|
Sep 4, 2003 4:19 PM
|Sounds like you are in the process of eliminating things, having worked through the drivetrain. Don't put grease on your carbon steerer! Here are some other thoughts:
Check the tightness of your QRs, and pull them out and put a small smear of grease on the rods. A loose front QR can cause out of the saddle creaking. Pop the bolts out of your stem and grease them, re-install at recommended torque. Take off your cassette, clean it and the freehub and re-assemble with grease on the lockring and torque it properly.
I have a Merlin XL and I was going through a horrible creak a few weeks ago. Ti is even worse than aluminum for making a creak sound bad. I did EVERYTHING and still no fix, until one day I was riding with only one bottle and noticed the creak was different depending on which cage I put the bottle in. Hmmmm....I took the cages off (Elite Ciussi stainless), cleaned them and the frame. Even though I keep my bike clean, there was some residual Gatorade spill in the area. I sprayed a bit of teflon lube around the rivnut bolt bosses and put it all back together. I greased the bolts liberally, and even put a smear of grease where the cages contact the frame. SILENCE!
|Sounds like the BB||Kerry Irons|
Sep 4, 2003 4:50 PM
|It is fairly common to have clicking noises, but ticks and clicks are very hard to eliminate sometimes. What seems like it is tied to the pedals may be coming from the seat post, etc. Sometimes things like temperature and humidity can affect noises as well. To eliminate chain ring bolts as the problem, take them all out and grease the threads, the faces where they contact the CRs, and the CRs where they contact the crank spider arms. Clicks tied to your pedaling can come from the BB (grease all threads in contact with the frame and BB, and torque it to the recommended settings, which can be quite high), the pedals (grease the threads, get some wax etc. on the cleats, grease the bolts into your shoes, squirt some lube into the guts of the pedal machinery if possible), the chain (clean and lube), your seat post and saddle (grease the post, seat post bolts, saddle rails), your bars and stem (grease the stem, stem bolt at both ends, h'bar bolt, and h'bar where it goes through the stem), and your wheels (check for spoke tension, particularly on the rear non drive side, put a drop of lube where each pair of spokes cross, grease/tighten QRs, tighten cassette lock ring). Needless to say, you want to try these things in what seems like the most likely place the noise is coming from, but there are plenty of stories about "I was sure the noise was in the handlebars but it went away when I tightened up the spokes in the rear wheel," so keep trying different things until you have success.|
|BTW||The Human G-Nome|
Sep 4, 2003 8:01 PM
|thanks to everyone who replied. despite the incredibly loud and irritating noise that was "coming from my bottom bracket" it turned out to be from the front quick release levers and specifically, where the fork meets the levers. a cleaning and a little lube eliminated the problem my LBS couldn't figure out on their own. thanks again.|| |