Source of a squeak?
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Source of a squeak?
Postby Arlberg » Sun Dec 03, 2017 10:49 am
It's definitely a squeak, rather than a rattle or a click or a knock, it actually sounds very much like a bird chirping, which when I first heard it is what I thought it was. It only ever happens when I'm out of the saddle. It happens once per pedal revolution, so the bottom bracket springs to mind although I've never managed to get the sound while seated in the saddle no matter how much I play around with the stroke, ie pulling up more on the upstroke, pushing down more on the downstroke etc.
Its not the skewers either as I have taken them off and greased them and tested them with different degrees of tightness. Its not the tyre rubbing on the chain stays or the brake pads as I have tested for both.
Obviously I can also rule out the seat and seat post, and I'm pretty sure its not the handlebars or stem, or my cleats either.
Any other ideas?
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Re: Source of a squeak?
Postby outnabike » Sun Dec 03, 2017 2:06 pm
We have all had this happen can be hard to find I know.
Might be a good idea to try a little WD 40 in suspected areas one at a time. If you don't like that, use a light chain oil then wipe off excess.
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Re: Source of a squeak?
Postby open roader » Sun Dec 03, 2017 3:57 pm
I candle waxed both cleat to pedal and cleat to shoe sole interfaces and was relieved to be rid of my squeak.
Pedals/cleats interfaces - do them anyhow, if nothing else just eliminate that as a source.
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Re: Source of a squeak?
Postby 10speedsemiracer » Sun Dec 03, 2017 4:33 pm
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Re: Source of a squeak?
Postby Duck! » Sun Dec 03, 2017 7:37 pm
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Re: Source of a squeak?
Postby JPB » Sun Dec 03, 2017 10:44 pm
I had a squeak, only occured while peddling firm to hard but sometimes occured when I hit a bump.
Turned out to be a cracked alloy top tube just in front of the seat post.
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Re: Source of a squeak?
Postby AUbicycles » Mon Dec 04, 2017 6:21 pm
Because it is once per revolution, I would concentrate on the pedals and other parts of the bike that react to the change in power when you are out of the saddle. The headset / steerer tube is one candidate, but also an unsolveable issue of the chain stay /bottom bracket connection with extra flex in the stays giving a noisy squeak.
On the bike, test out (out of the saddle) slow / fast pedalling and also powerful and soft pedalling along with ajustibg you weight ( front heavy / back heavy). Unfortunately, the source of a noise is very difficult to isolate while riding.
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Re: Source of a squeak?
Postby Arlberg » Wed Dec 06, 2017 10:34 am
Duck, I have checked the shoe on the chain stay and I can rule that out as it was easy to diagnose. (Just gotta look down while pedalling). I'm disappointed that was not the cause, as it would have been an easy fix. Just isolating the sound or even narrowing it down to left or right side or front or back ain't easy...
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Re: Source of a squeak?
Postby AUbicycles » Thu Dec 07, 2017 11:23 pm
So it changing the directions from which force is applied and the mount changes the bikes, a lot of riders will swing the bike left to right, think end-sprint in a road race. The chain stays will flex far more, as will the wheels and also with more weight on the front end and steerer, any 'issues' will be exacerbated.
After inspecting your entire bike and checking that everything is tight - to identify the squeak when out of the saddle, try different things like gentle power, strong power, weight forward, weight back, more weight left and more weight right. Could even be something as silly as your shoe against the pedal or a lose bolt causing movement of a cleat.
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Re: Source of a squeak?
Postby headasunder » Sat Dec 09, 2017 2:58 am
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Re: Source of a squeak?
Postby Duck! » Mon Dec 11, 2017 1:59 pm
Indeed they can, but will generally squeak while shifting when the pulley is subjected to side loading.headasunder wrote:Jockey wheel bushes can cause squeaks when dry
Many headseats have a rubber weather seal under the upper bearing cover, and can squeak on the rim of the head tube. A squirt of silicone lube shuts it up.
Some hubs have rubber caps over the cones & locknuts, and can squeak against the hub shell.
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Re: Source of a squeak?
Postby Too Tired » Tue Dec 12, 2017 11:12 am
Requirements:
Cycling: A bike
This forum: A thick skin and witty retorts
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Re: Source of a squeak?
Postby Bentnose » Fri Dec 15, 2017 7:21 pm
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Re: Source of a squeak?
Postby Arlberg » Mon Dec 25, 2017 7:13 am
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Re: Source of a squeak?
Postby Bentnose » Mon Jan 22, 2018 11:13 am
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Re: Source of a squeak?
Postby g-boaf » Mon Jan 22, 2018 12:44 pm
If your shoe rubs against the crank when riding, that's a possible one (and a good suggestion by the person above), and another one which would be more of a creaking noise would be saddle clamps.
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Re: Source of a squeak?
Postby CXCommuter » Mon Jan 22, 2018 1:06 pm
Sorry.. leaving now
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