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Puffer advice

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  • #120771
    Colin Bishop
    Moderator
      @colinbishop34627

      Agreed, Len, that last little bit of fine tuning makes a big difference to efficiency. If using a wooden mount then tightening down or easing off while the motor is running can hit the sweet spot.

      On the other hand, my favourite solution of round belt drive is also very easy to adjust by moving the motor slightly sideways in a slotted mount to achieve the same effect with the benefit that you can effectively make the motor even more efficient by gearing it down at the same time.

      Colin(DTR)IMG_5288

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      #120778
      Alasdair Allan
      Participant
        @alasdairallan37423

        thanks for the advice everyone – yes I saw the article in this month’s magazine and will study carefully !

         

        #120784
        Alasdair Allan
        Participant
          @alasdairallan37423

          So, I am thinking along the following lines: A 400 12 v motor ; a universal coupling (poss  with inserts, as prop shaft bigger diameter than shaft on motor); a Raboesch watertight propshaft with ball bearing mounts, lock nuts and a brass propelllor to replace the white metal one in the kit.

          Let me know if that sounds wrong – I am more used to paddles than propellors. not sure if motor should be geared or not, and have yet to work out bores and diameters.

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