RBM thread size?

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  • January 2, 2020 at 4:36 pm #190554
    frankr
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      US Member - 1 Year (includes $3 online payment fee)

      Anybody know the thread size on a 1918 Evinrude RBM Carb needle valve screw? Looks like #12 x ??tpi but I have nothing to try in the hole. I need to make a needle valve to replace the missing one.
      Frank.

      January 2, 2020 at 5:28 pm #190561
      RICK EICHRODT
      Participant

        US Member - 2 Years

        Talk to Chris Scratch. I believe he has made a few and would know the thread size. Also check with Brook Newcomb as he is the SIG leader for Evinrude RBM’s.

        January 2, 2020 at 6:49 pm #190567
        The Boat House
        Participant

          .

          January 2, 2020 at 6:51 pm #190568
          The Boat House
          Participant

            January 4, 2020 at 4:40 pm #190708
            frankr
            Participant

              US Member - 1 Year (includes $3 online payment fee)

              I turned a 12-24 thread on a piece of rod and it screwed right into the carb. So I went ahead and made a needle. Should oughta work.

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