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Pre-gluing and pre-stretching Tubular tyres

  • 12-07-2010 9:28am
    #1
    tri3
    Registered Users Posts: 35 ✭


    I want to carry a spare tubular tyre attached to the saddle tube during the cycle leg of a half ironman race. Is it possible or necessary to pre-glue the spare tub given that the current tyres are fairly new (only about 6 weeks old) and therefore there would be a decent amount of fresh glue on the rim already?

    I've heard that pre-gluing them would not be necessary in this case and would be very messy when the tub is folded up to fit to the bike.

    Also, is it possible to pre-stretch the tub if you don't have a spare tubular rim to fit the spare to? For instance, I've seen somewhere holding the tyre down with your foot and pulling upwards? Not sure if that is advisable though - again I've seen conflicting messages on that?


Comments

  • #2
    blorg
    Registered Users, Registered Users 2 Posts: 15,995 ✭✭✭✭blorg


    tri3 wrote: »
    I've seen somewhere holding the tyre down with your foot and pulling upwards? Not sure if that is advisable though - again I've seen conflicting messages on that?
    FWIW in the lengthy instruction diagram included with my Contis it has a diagram of someone doing that with a big X through it. It also has countless steps with several "+24" bits in. My general impression though is that for a flat situation people just fit the spare without glue and take it easy on any corners. It can then be redone properly at home.


  • #3
    Murph100
    Registered Users, Registered Users 2 Posts: 1,088 ✭✭✭Murph100


    You can stretch a tub on a clincher rim.

    45 pages of tubular Q & A here


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