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Bit puzzled by pressure gauge

  • This topic has 6 replies, 5 voices, and was last updated 10 years ago by PhilRuss.
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  • June 13, 2016 at 12:21 pm #25883
    DofeDome

    Hi all,

    I am a bit puzzled with readings on my pressure gauge for bike tyres. I ride Rubena syrinx 700×23 clincher tyres  (top notch I know hahah) with stated max 115 psi but here’s the deal, when I inflate quite a lot (at least that’s what my hands are telling me) and when the tyre is hard to touch and quite nice to ride, my pressure gauge tells me it’s only 30 psi or 2 bar, 40 psi max at the time. Either I don’t know how to measure it, or it is malfunctioning or it should be like that I can’t tell. And yes, pressure thingy is separate from the hand pump ( this one http://i.ebayimg.com/images/a/T2eC16JHJHYE9nzpcwwGBQILPT)3kw~~/s-l500.jpg )

    Hope someone can shed a light 

    Cheers

     

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  • June 14, 2016 at 12:02 am #873425
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    PhilRuss

    [[[[[ Pump ’em up, check the

    [[[[[ Pump ’em up, check the pressure with your gauge, then pop to your LBS and ask the staffer to compare your reading with the shop’s own p’gauge.  As suggested above, at 40psi, you’d be banging along on the rims….unless you only ever ride at velodromes.

    June 13, 2016 at 7:44 pm #873423
    0
    Ronald

    Pumps aside…
    Pumps aside…

    With just 2 bar in a 23 mm tyre you’ll almost certainly hit the ground with the rims, if not pinch flat all the time. Bike will also feel very insecure, especially in corners.

    I put my 2p on a broken pressure gauge…

    June 13, 2016 at 12:59 pm #873421
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    sergius

    I’d definately get yourself a

    I’d definately get yourself a track pump, I dread to think about topping of my tyres with a hand pump.

     

    June 13, 2016 at 12:36 pm #873419
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    PennineRider

    Quote:

    oh, so perhaps the best bet would be a floor pump with a gauge. Thank you

    No.

    What I think you’re saying is “My tyre feels hard when I squeeze it with my fingers, but my pressure gauge only shows 40PSI.”

    So my response was “Yes, your tyre will feel hard at 40PSI, but you can still get more air into it if you want.”

    I wasn’t recommending a floor pump. But as you mentioned it, it is a much easier way to inflate your tyres!

    June 13, 2016 at 12:28 pm #873417
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    DofeDome
    PennineRider wrote:
    The “pinch test” way of gauging tyre pressure isn’t really that accurate. A tyre pumped to 40psi will feel hard between your fingers but you could get another 70psi into it if you wanted to.

    I mean, it’s possible that your pressure gauge is faulty but I think the above is more likely.

     

    oh, so perhaps the best bet would be a floor pump with a gauge. Thank you

    June 13, 2016 at 12:26 pm #873415
    0
    PennineRider

    The “pinch test” way of

    The “pinch test” way of gauging tyre pressure isn’t really that accurate. A tyre pumped to 40psi will feel hard between your fingers but you could get another 70psi into it if you wanted to.

    I mean, it’s possible that your pressure gauge is faulty but I think the above is more likely.

     

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