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Old 03-23-11, 11:58 AM   #1
deacon mark
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Valve stem rattle

I have a rattle that is not bad only I ran hear it wondered if anyone has experienced this? My bike is quiet and perfect on smooth road but on the chip seal when it is not as smooth I hear this rattle. I have an immortal spirit with richey pro wheels. They are dead true nothing else seems make the same sound. I wonder the tube has a floating valve stem not like the others I have that come with a nut to pull the stem tight on the rim. I can tell there is a small amount of play between the stem and the rim that I suspect could cause this to happen. I can bounce the bike and shake it all around but only going over the not so smooth pavement duplicates the sound. Now I could just swap a new tube but before I do thought I would run this by the group.
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Old 03-23-11, 12:32 PM   #2
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I doubt it's the valve, though anything is possible. If it bothers you and the valve is suspect, pull the tube, and put a piece of cloth adhesive tape across the valve hold in the rim then punch it so it draws into the hole a bit, remount the tube and tire and you should be good to go silently.

But, as I said, I think the noise is coming from elsewhere, so once the valve is eliminated you can start hunting for anything loose. Start by checking that the FD cable end isn't close enough to the frame to ting on bumps.
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Old 03-23-11, 08:30 PM   #3
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do you have the nuts on the valve stem? if you do and they loosen they can rattle. just a guess on the problem
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Old 03-23-11, 09:04 PM   #4
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The nut is useless throw that out. Piece of tape if the valve is rattling.
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Old 04-05-11, 06:21 PM   #5
deacon mark
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Update and what an easy fix. I simply had some water bottle holders that were not tighten down. I have one with a cage on it and the other bosses is still just sitting emply. The bolts to tighten were a little loose and I turned them down tight and no more rattles. I should have known better but it is funny how little things can added up.
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Old 04-05-11, 06:31 PM   #6
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Update and what an easy fix. I simply had some water bottle holders that were not tighten down. I have one with a cage on it and the other bosses is still just sitting emply. The bolts to tighten were a little loose and I turned them down tight and no more rattles. I should have known better but it is funny how little things can added up.
Glad to hear it was that simple. However a rattling valve stem is a possibility. I had one once and fixed it as FBinNY suggested by wrapping the stem with a layer of electrical tape.

Note to tortugaflats: There are presta valves with snooth, unthreaded stems so not all of them will take the nut. I agree with operator, even if they do fit, throw them away.
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Old 04-05-11, 07:06 PM   #7
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you push the stem into the tire trying to get the usual push on pump head on.

But it's your Pfenning..
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Old 04-06-11, 06:48 AM   #8
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you push the stem into the tire trying to get the usual push on pump head on.

But it's your Pfenning..
Put your thumb on top of the tire tread over the valve and the pump head goes on fine. After you get 10 psi in the tube the problem goes away.
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Old 04-06-11, 07:28 AM   #9
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The nuts really are superfluous, but I like to put the caps on to keep stuff out of the valve and to keep the little screw and nut from snagging on something and getting bent, but that's mostly superfluous too.
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