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Agood question I think

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Old 05-19-13 | 11:13 AM
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Agood question I think

O K talking about a Presta valve on a 700X23 innertube,,,,,,this is the way it went ,,I was changing the innertube took the bad one out,,got the new one inserted the valve into valvestem hole grabed it from the other side and pulled it out firmly! I worked the innertube back into the tire and rim got it all back in no problem ! no pinching notin! so I grab the pump and go to put it on the stem , I notice that the little lock that you turn when finished pumping was'nt there that was odd cuss I thought I saw it when I started anyway I pump up the tire to about 90 #s take the pump off and sure enough the little thing I'm talking about was'nt there??so now I notice someting rolling around inside the rim? I took everything apart again checked inside tire and rim! really good nottin! so I took another innertube and installed that one, no problem except the noise is still inside the rim when I shake or roll it around??? now this is where the good question comes in ,,,,,Is it posible that the little stem lock fallen into the rim somehow like when i inserted the innertube into the rim ???? is there space in there? cuss it's not in the tire ! now after I put the wheel back on the bike and roll the wheel you can hear something rolling around in there**********?I realize it's no big thing but you can hear it!!!and that irritates me I know I'll never be able to get it out ?thats it , anybody ever hear of such a thing?
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Old 05-19-13 | 12:57 PM
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Is the "little lock" you mention the knurled thumb nut at the end of the valve? If so it sounds like you broke it off during installing tube #1. It also sounds like this thumb nut is still rattling around the rim. Like a nipple, things this size can enter the box area of rims and be a pain to remove. Usually I'll position the valve hole down and shake, rattle and roll the wheel so the item inside can end up at the bottom of the wheel and hopefully exit out the valve hole. Sometimes I'll pull the rim strip to give more exit points.

One point more- It reads like you pulled the tube valve out (actually in to the wheel's center) of the rim during the mounting. Doing this can result in the valve being fully seated in the rim's interior. This often prevents the tire's beads from fully settling down into the rim. A very common mounting mistake that can make the tire have a hop at the valve area or even a blow out as the tube squeezes past the tire bead and rim. You want to push the valve back in the rim after the tire is mounted so the valve base is not caught under the tire's beads. Air pressure alone will push out the valve as much as is needed. Andy.
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Old 05-19-13 | 01:04 PM
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who are you and what have you done with Dave Chappelle?
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"c" is not a unit that measures tire width
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Old 05-19-13 | 01:05 PM
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When you post, stop and take a breath, use punctuation, sentence structure and paragraphs so we know what your issue is.

As best as I can dope it out, you're wondering if it's possible that you somehow got the valve stem nut trapped in your rim.

If that's your question, the answer is probably, but not likely. Most double wall rims have no liner at the valve holw so it's possible for something to drop between the walls. OTOH, once the valve is in place that entry is closed so the only way the nut could get into the rim is if you somehow broke it off while inserting the valve.

Odds are that the rattling you hear in the rim is some left over debris from production. Often the drilling and eyeletting (if any) leaves small chips still attached to the insides of the holes, and these break off over time causing rim rattle. It doesn't matter, since once the rim spins they stop moving and don't make any noise. If you're really patient, you can sometimes shake debris down to the valve hole and out when there's no tire mounted, but I never bother since they never rattle at over 2-3mph.

As for the valve nut, you probably broke that off when pumping the tire. It doesn't matter that much since the valve doesn't need it to stay closed, but without it you cannot use a pressure gauge. If you take a few minutes, there are plenty of threads discussing broken PV stem nuts, and how to prevent them so I won't bother repeating this oft posted info.
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Old 05-19-13 | 02:30 PM
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Originally Posted by Andrew R Stewart
Is the "little lock" you mention the knurled thumb nut at the end of the valve? If so it sounds like you broke it off during installing tube #1. It also sounds like this thumb nut is still rattling around the rim. Like a nipple, things this size can enter the box area of rims and be a pain to remove. Usually I'll position the valve hole down and shake, rattle and roll the wheel so the item inside can end up at the bottom of the wheel and hopefully exit out the valve hole. Sometimes I'll pull the rim strip to give more exit points.,,,,, thank you Andy and yes indeed that little knurled nut is what I'm talking about but I've changes plenty of tubes and I don't bo in a rough manner I think that nut thing was not set right but thats it ,,,,

One point more- It reads like you pulled the tube valve out (actually in to the wheel's center) of the rim during the mounting. Doing this can result in the valve being fully seated in the rim's interior. This often prevents the tire's beads from fully settling down into the rim. A very common mounting mistake that can make the tire have a hop at the valve area or even a blow out as the tube squeezes past the tire bead and rim. You want to push the valve back in the rim after the tire is mounted so the valve base is not caught under the tire's beads. Air pressure alone will push out the valve as much as is needed. Andy.
,,,,,, another good point you mentioned is that i did pull the stem as far as it would go! and I'll let some air out and push it in alittle and pumpit back up,,, Thanx
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Old 05-19-13 | 02:39 PM
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yea NY I sure did'nt mean to confuse you by omitting the punctuation marks! but you did manage to get the jist of my question, and that was it and I guess it's possible like you say that it could be something left over from drilling for the spokes anyway thanks for even taking the time to respond
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Old 05-19-13 | 02:43 PM
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hey tailrider I don't know about Dave Chappelle but mike Chappelle is working in Morgan City,,,I'm not gonna tell you who I am,,,,,,,Thanx
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