• Help -
    Took the Gillott out for a spin in the sunshine and the top nut on the H/S is a little loose and needs tightening.

    H/S is I think a Gnutti and measures 1.25" or 31.9mm. I don't have a spanner that will do the job and I've looked on nut/bolt conversion sites around the sizing to figure out an imperial size Spanner but can't make any sense of conversions.

    Please can someone tell me what size imperial Spanner will do the job.

    Thanks


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  • Please can someone tell me what size imperial Spanner will do the job

    I can tell you which metric one will work - 32mm. It's a very common size for threaded 1" headsets.

  • If the top nut of your headset is loose, the whole bearing is out of adjustment. I bet you get a judder when using the front brake.

    Riding with the head bearing loose will rapidly damage the bottom race which takes all the weight.

    Tester is right to say a 32mm spanner should be the correct size. If that's a bad fit, use an adjustable spanner or you might try removing the hanlebars and stem and holding the nut in a vice.

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