Find answers, ask questions, and connect with others in our UK cycling & mountain bike forum.

  • gt aggresser valve question

     Gunner updated 11 years, 4 months ago 2 Members · 4 Posts
    This page may contain affiliate links which means that Cycling Addicts earns from qualifying purchases. See our full disclosure. This page may contain affiliate links.
  • bababoom

    2 January 2010 at 6:59 pm

    hello names Steve from south Wales, been lurking around for a couple of days doing a bit of reading.

    anyhow i decided on a gt aggressor when i just happened to find a as new 2nd hand one fot £220 witch now I’ve bought, bargain i think at just over half the price of a new one.

    so first question is can i change the tube for ones with normal car like valves?

    the hole in the rims look a bit narrow..

  • Gunner

    2 January 2010 at 7:19 pm

    Yes you can.

    You will presumably have high pressure valves (the thin ones) at the moment.

    Just take them out and then with a small round file increase the hole diameter that the valve fits through.

    Do this very slowly, checking regularly to see that the fit is right.

    This rim alloy is very soft and it is easy to take a file to it and end up with a hole much to big.

    If you want to go back to high pressure there is a little adaptor you can buy.

    Alternatively you can drill the hole out if you feel confident enough, but it hardly takes a couple of minutes with a file.

  • bababoom

    2 January 2010 at 10:35 pm

    whats the advange of these high pressure valves then?

  • Gunner

    3 January 2010 at 9:49 am

    whats the advange of these high pressure valves then?

    I think that for the average rider, it’s just a case of personal preference and ease of use, if you find car type easier to use just gor them.

    From a slightly more practical point I have known quite a few riders damage the valves when inflating HP tubes, either through inexperience with the pump or when rushing to inflate (me 😳 ) and once you’ve knackered the valve, that’s quite often it. 🙄

Viewing 1 - 4 of 4 posts
Original Post
0 of 0 posts June 2018

New Report