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Slowest of slow punctures?

  • This topic has 6 replies, 5 voices, and was last updated 12 years ago by Flying Scot.
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  • July 29, 2014 at 12:07 pm #22016
    meach

    For around a month now my front tyre has been deflating, but not fast enough to affect my riding in any way. Can do four hour rides with no noticeable change in tyre pressure.
    When I go to get my bike out the next day, the rear tyre is still up at 100psi, yet the front is down at 20psi.
    Any ideas? On removing the tube I couldn’t find any puncture.

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Viewing 6 replies - 1 through 6 (of 6 total)
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  • July 30, 2014 at 8:26 am #806421
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    Flying Scot

    andycoventry wrote:Pump it up

    andycoventry wrote:
    Pump it up and stick it in a bath full of water to find where the air is coming from.

    I had assumed he had already done this!

    July 30, 2014 at 8:01 am #806419
    0
    andycoventry

    Pump it up and stick it in a
    Pump it up and stick it in a bath full of water to find where the air is coming from.

    July 29, 2014 at 10:54 pm #806417
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    Simon E

    meach wrote:replaced the tube

    meach wrote:
    replaced the tube when i took it out to inspect this week, just wanted to know what the issue was and if it was fixable

    There’s probably a very, very, VERY tiny hole in it.

    I fixed a puncture in my wife’s rear tyre, checked it, all seemed fine. Still hard after an hour, close to flat after a day. CBA, it’s an old, cheap 26″ tube so I stuck a spare on instead.

    It may be repairable but is it worth the effort? Keep it as a toolbox spare or something.

    July 29, 2014 at 8:48 pm #806415
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    bashthebox

    My turbo tyre does that – not
    My turbo tyre does that – not sure if there’s a turbo specific tube or something? Just took a tube out of a second hand wheel that was deflating in a similar way and the tube said ‘turbo’ on it too. Weird.

    July 29, 2014 at 12:38 pm #806413
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    meach

    Flying Scot wrote:2 quid, fit

    Flying Scot wrote:
    2 quid, fit a new tube, probably the valve passing at high pressure, holds at low pressure.

    replaced the tube when i took it out to inspect this week, just wanted to know what the issue was and if it was fixable

    July 29, 2014 at 12:16 pm #806411
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    Flying Scot

    2 quid, fit a new tube,
    2 quid, fit a new tube, probably the valve passing at high pressure, holds at low pressure.

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