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cowl vents

Home › Forums › Beginners › cowl vents

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  • 13 May 2010 at 15:45 #1961
    LARRY WHETTON
    Participant
      @larrywhetton68737

      john king

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      13 May 2010 at 15:45 #26792
      LARRY WHETTON
      Participant
        @larrywhetton68737
        hi  any idea how to scratch build cowl vents to suit a beginer cheers larry.
        14 May 2010 at 00:21 #26794
        Rick Fryer
        Participant
          @rickfryer11539
          1. Obtain a ball equal in diameter to the cowl part of the ventilator
           
          2. Cut a slightly bigger hole in a sheet of wood
           
          3. Secure a sheet of  styrene to the wood.
           
          4. Heat styrene
           
          5. Push ball through hole to form cowl
           
          6. Cut out cowl and attach to styrene tube to form vent.
           
          7. Trim, fill and smooth.
           
          Rick
           
           
           
           
          14 May 2010 at 09:26 #26795
          LARRY WHETTON
          Participant
            @larrywhetton68737
            hi rick thanks for info i will go and  bye a bag of marbles for source of balls larry.
            14 May 2010 at 10:47 #26796
            Ian Gardner
            Participant
              @iangardner62867
              I have used a method similar to this using a ball bearing, heated, and just placed on a suspended sheet of styrene. I had a jug of cold water handy to douse the lot when the ball sank to about half its diameter. You then have a ball embedded in the styrene, but a smart whack will remove it. This leaves a nice rim round the cowl when trimmed up. Bond this to a styrene tube and fill the join between cowl and tube with styrene slurry -et voila! It’s all a bit crude but it does work, after some experimentation with thickness of sheet and heating times.
              Ian
              17 May 2010 at 20:58 #26835
              LARRY WHETTON
              Participant
                @larrywhetton68737
                thank you Ian for tip on cowl build need source of a ball bearing now then i will have go cheers Larry.
                18 May 2010 at 09:02 #26839
                Bob Abell 2
                Participant
                  @bobabell2
                  Hello Larry
                   
                  If you require large cowls……..Then those egg shaped ball things that kids get out of slot machines, with little toys inside, could be adapted…..with a little ingenuity!
                   
                  Bob
                  18 May 2010 at 16:29 #26841
                  LARRY WHETTON
                  Participant
                    @larrywhetton68737
                    thanks bob stuck deck on to day wheel hous e 70% COMPLETE gardening keeps geting in the way cheers larry
                    19 May 2010 at 08:42 #26848
                    HS93
                    Participant
                      @hs9317166

                      http://modelfireboats.com/blogs/display.php?blogid=15&page=4

                      19 May 2010 at 08:42 #26849
                      HS93
                      Participant
                        @hs9317166

                        http://modelfireboats.com/blogs/display.php?blogid=15&page=4

                        19 May 2010 at 08:42 #26850
                        HS93
                        Participant
                          @hs9317166

                          http://modelfireboats.com/blogs/display.php?blogid=15&page=4

                          19 May 2010 at 08:44 #26851
                          HS93
                          Participant
                            @hs9317166
                            Have a look at my mini fire boat blog on the fire boat site, it shows how I made some brass ones very simple to do, I would post it on hear but it takes so long to put pictures on.
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