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One part of the tube swells up quite large

  • 23-08-2010 3:10pm
    #1
    thebourke
    Registered Users Posts: 1,350 ✭✭✭


    Hi, i got a replacement tube for my bike.
    When i pumped up the tube for the first time, it seems to swell quite a lot in one part of the tube....when i let the air out to bring it back to itys proper size all around , the tube is quite flat..so the air doesnt seem to be spread evenly inside the tube...
    Has anybody seem anything like this before.


Comments

  • #2
    07Lapierre
    Registered Users, Registered Users 2 Posts: 8,256 ✭✭✭07Lapierre


    Yes! its Normal....Once inside the tyre it'll be fine.


  • #3
    thebourke
    Registered Users Posts: 1,350 ✭✭✭thebourke


    are you sure, because its quite large.the reason i say this is..ebcause i got another tube the day before and its burst once i pumped it up.So this one i have now was a replacement..


  • #4
    07Lapierre
    Registered Users, Registered Users 2 Posts: 8,256 ✭✭✭07Lapierre


    thebourke wrote: »
    are you sure, because its quite large.the reason i say this is..ebcause i got another tube the day before and its burst once i pumped it up.So this one i have now was a replacement..

    Did it burst before you fitted it inside the tyre?. Inflate the tube with just one or two pumps, just enough to give the tube its "shape". Then fit the tube into the tyre. Only then do you inflate the tube fully.


  • #5
    thebourke
    Registered Users Posts: 1,350 ✭✭✭thebourke


    yes it burst before i put the tube inside the tyre...


  • #6
    Lumen
    Registered Users, Registered Users 2 Posts: 31,142 ✭✭✭✭Lumen


    Why are you inflating a tube to bursting point before you put it in the tyre?


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  • #7
    Raam
    Registered Users, Registered Users 2 Posts: 14,317 ✭✭✭✭Raam


    Lumen wrote: »
    Why are you inflating a tube to bursting point before you put it in the tyre?

    Why not?


  • #8
    Lumen
    Registered Users, Registered Users 2 Posts: 31,142 ✭✭✭✭Lumen


    Raam wrote: »
    Why not?

    Because rubber doesn't grow on trees.


  • #9
    Raam
    Registered Users, Registered Users 2 Posts: 14,317 ✭✭✭✭Raam


    Lumen wrote: »
    Because rubber doesn't grow on trees.

    :pac:


  • #10
    Morgan
    Registered Users, Registered Users 2 Posts: 2,481 ✭✭✭Morgan


    Lumen wrote: »
    Why are you inflating a tube to bursting point before you put it in the tyre?

    To show it's who's boss.


  • #11
    kennyb3
    Registered Users, Registered Users 2 Posts: 6,724 ✭✭✭kennyb3


    Lumen wrote: »
    Because rubber doesn't grow on trees.
    http://en.wikipedia.org/wiki/Hevea_brasiliensis


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  • #12
    thebourke
    Registered Users Posts: 1,350 ✭✭✭thebourke


    i was inflating it to normal level...i have never seen this happen with tubes before..is this the norm now?


  • #13
    Morgan
    Registered Users, Registered Users 2 Posts: 2,481 ✭✭✭Morgan


    kennyb3 wrote: »
    http://en.wikipedia.org/wiki/Hevea_brasiliensis

    Oh come on! That's not real. What next? The carbon-fibre bush?

    OP - it suggests the rubber of the tube is a different thickness at that point. Shouldn't matter once it's inside the tyre though.


  • #14
    Lumen
    Registered Users, Registered Users 2 Posts: 31,142 ✭✭✭✭Lumen


    thebourke wrote: »
    i was inflating it to normal level...i have never seen this happen with tubes before..is this the norm now?

    What's "normal level"?


  • #15
    07Lapierre
    Registered Users, Registered Users 2 Posts: 8,256 ✭✭✭07Lapierre


    thebourke wrote: »
    i was inflating it to normal level...i have never seen this happen with tubes before..is this the norm now?

    Yes!.. its nomal ( sorry for repeating myself)


  • #16
    Lumen
    Registered Users, Registered Users 2 Posts: 31,142 ✭✭✭✭Lumen


    Lumen wrote: »
    What's "normal level"?

    To be clear, you cannot achieve a high PSI with an unconstrained tyre, because the SIs grow faster than the Ps do.


  • #17
    Morgan
    Registered Users, Registered Users 2 Posts: 2,481 ✭✭✭Morgan


    Lumen wrote: »
    What's "normal level"?

    120psi?


  • #18
    Raam
    Registered Users, Registered Users 2 Posts: 14,317 ✭✭✭✭Raam


    Morgan wrote: »
    120psi?

    Sure it doesn't even half fill the room at that pressure.


  • #19
    Morgan
    Registered Users, Registered Users 2 Posts: 2,481 ✭✭✭Morgan


    Raam wrote: »
    Sure it doesn't even half fill the room at that pressure.

    Better keep pumping then...


  • #20
    kennyb3
    Registered Users, Registered Users 2 Posts: 6,724 ✭✭✭kennyb3


    Morgan wrote: »
    Better keep pumping then...
    Are we still talking about tubes here?


  • #21
    WithCheesePlease
    Registered Users Posts: 1,006 ✭✭✭WithCheesePlease


    Daftest. Thread. Ever.


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  • #22
    cdaly_
    Registered Users, Registered Users 2 Posts: 6,440 ✭✭✭cdaly_


    Lumen wrote: »
    To be clear, you cannot achieve a high PSI with an unconstrained tyre, because the SIs grow faster than the Ps do.

    Utterly clear... :confused::D


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