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what is causing the squeak?(10 posts)

what is causing the squeak?kushogun
Oct 22, 2001 12:20 PM
Hello all. I was riding the other day and I began to notice that there was a squeaking sound coming from somewhere between my bottom bracket and headset. I know that this is too broad of an area to really pinpoint. However, it only squeaked when pulling hard on the bars or motoring up a long climb. Only when exertion was applied did the squeak come out and sing to me. I have had a shop make several changes to my bike like flopping the stem. Could it be something with the headset (Cane Creek C2). Also when I got done with my ride a brownish colored lube or oil had leaked onto one of my crank arms. Could my b/b have tanked? It's a Shimano 105 model. Any clues anyone? It almost seemed at times that it was my front hub, but when I inspected the wheel alone everything seemed fine. When I bounce the front wheel when it is is in the fork, there is a dull jingle sound like something is loose. Headset? I'm gonna take it into the shop but I just wanted to see what everyone else thought. Could the squeak be my tires on the cold pavement? (Axial Pros w/400 miles) Everyone be safe out there! Thanks again.
the classicsmr_spin
Oct 22, 2001 12:31 PM
I think most squeaks come from the stem or the seat. A thrashed bottom bracket will sound more crunchy than squeaky.

Ungreased skewers are the secret squeak that can drive people insane trying to find it.

First thing, grease your skewers. If you still get the noise, grease your stem and seatpost/seat (unless your seatpost is carbon).
Also grease where the handlebar and stem meet (nm)Dave Hickey
Oct 22, 2001 1:04 PM
Bad Ideagrzy
Oct 22, 2001 1:26 PM
You want more friction here, not less. Anyone who's had their bars rotate in the stem while descending at speed can verify this. If the squeaking is really coming from here then you have a problem.
Sorry GRZY, I disagreeDave Hickey
Oct 22, 2001 1:49 PM
I've had a squeak in the past and it was solved with greasing the bar stem. Anything that's metal to metal, I grease.
Sorry GRZY, I disagreegrzy
Oct 23, 2001 8:01 AM
I'm sure it did work, but you treated the symptom, not the cause. Hey, that's OK, but some things aren't supposed to be greased. The square taper on the BB is another - according to Shimano. I'm in the camp that thinks one should determine root cause and proceed from there. Slapping grease in the bar/stem interface is not without risk.
It's the headset!JS
Oct 22, 2001 1:14 PM
Chased a squeak around for a few months before figuring out that it was my C2 headset. The upper top cup over laps the upper bottom and would squeak, argghh. Syncros headset solved the problem. Your symptoms sound exactly like mine.
re: what is causing the oil on crankarm?guido
Oct 22, 2001 1:18 PM
Your BB must be loose, pumping lube out onto the crankarm, huh?
Who knows?Kerry Irons
Oct 22, 2001 4:11 PM
It is fairly common to have your experience, 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 like this 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 seatpost 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). 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.
re: what is causing the squeak?bdacaret
Oct 22, 2001 7:19 PM
Try greasing the drop outs on the forks where the skewers go onto,..it worked for me.