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  1. #1
    mtbr member
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    May 2008
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    71

    help with tire and tube

    well i got a flat today and put in a new tube and as soon as i got it to the right PSI it split at the base of the stem. so i threw another tube in and the same thing. i have never had this problem. i tried both presta and schrader tubes with the same result. the rim is drilled for schrader. is the rim cutting the tube? i am using a hand put and have many times before without a problem. any idea on how to solve this problem?

  2. #2
    mtbr member
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    Apr 2011
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    sounds to me like there is a burr of metal that may be cutting ur tube.

  3. #3
    Crash Test Dummy
    Reputation: CraptacularOne's Avatar
    Join Date
    Jul 2008
    Posts
    30
    As said above, check the rim by taking the tire completely off and looking for burrs or anything else that may be causing this. Also inspect your rim tape and make sure it is in place. You may also want to take the tire off and turn it inside out and look for anything sharp that could be causing your tires to go flat.

  4. #4
    usually cranky
    Reputation: b-kul's Avatar
    Join Date
    Sep 2009
    Posts
    9,928
    i agree with the burr theory. are you using a shim in the hole when you are using presta? if not you could bend or break a stem.

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