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  1. #1
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    tube slipping - how to stop?

    Hi everyone
    I'm having problems with flats with cut stem bases. I do my best to keep them straight, keep my tires aired up properly. If I notice the stem going angled, I stop to deflate, straighten, and inflate. It is happening on nearly every trip. (It is only happening on the front tire.)
    Should I drill the hole bigger, or is there another root cause that is making the tube rotate in the rim? It's driving me NUTS.

  2. #2
    Aluminium Crusader :-)
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    I wrap some cloth sticky tape around the base of the valve stem which acts as a stopper, preventing the valve moving around, and also stops it pulling through the hole and tearing.

  3. #3
    My own worst nightmare
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    Maybe the tube is for a narrower tire, and is thus not filling the cavity as well as it should? Just a thought. Maybe the tube's for a smaller diameter tire (26" tube in a 700 rim/tire, e.g.)?

  4. #4
    yak
    yak is offline
    Zircon Encrusted Tweezer yak's Avatar
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    Assuming that you are maintaining the correct tire pressure (and it's a schrader valve), you could consider using presta valved tubes, which have a thread all the way own the valve stem, with a ring that you can thread down.

  5. #5
    I drink your MILKSHAKE Raiyn's Avatar
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    Continental makes schrader tubes that have a lock nut just like a presta tube. If nothing else that valve will NOT move.

  6. #6
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    Thanks everyone for the great help.
    I found out the problem-my tire was worn out. Evidently, it had stretched and it was also turning on the rim. I figured it out when I realized that the tire was coming off the rim way too easily when I changed the flat for the third time this week.
    I bought a new tire and that sucker is staying as straight as can be.
    Again, thanks for your help.

  7. #7
    Senior Member
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    Are you using decent rim tape. Velox cloth tape is cheap, easy to fit, lasts for years and prevents a whole range of inner-tube problems.
    Also check if the the valve hole of the rim has a sharp edge. Emery cloth can take the edge off.

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