Airguide Speedometer

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  • June 4, 2018 at 1:21 am #10142
    outboardboy3
    Participant

      This is an Airguide Speedometer, and I am stumped of how it works. Can anyone tell me how it works? Thanks.

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      June 4, 2018 at 1:32 am #77369
      vintin
      Participant

        The speedometer is really a pressure gauge and the water pressure created when the boat moves forward pushes air up the tube.

        June 4, 2018 at 1:47 am #77371
        phil-b
        Participant

          Never seen a bronze pickup or copper plumbing before! I seem to recall that a fat section can be used as a kind of shock absorber.

          The meter has a metal belows inside.

          June 4, 2018 at 9:04 pm #77409
          amuller
          Participant

            It works just like the airspeed indicator on a plane: Ram pressure against a forward-facing opening (pitot tube) is piped to what amounts to a pressure gauge.

            June 5, 2018 at 12:54 am #77426
            billy-j
            Participant

              US Member - 2 Years

              How accurate would this Airguide be regarding actual MPH.

              June 5, 2018 at 3:47 am #77444
              dave-bernard
              Participant

                US Member

                At the time were quite accurate.

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