Dumas U-1 36" Atlas Van Lines Hydro

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  • greenman407
    Admiral
    • Feb 2009
    • 7530

    Dumas U-1 36" Atlas Van Lines Hydro

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ID:	100014 Another wood kit that builds smoothly, but I hope that you like sanding as there is plenty of that.Click image for larger version

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ID:	100013 You can see from these pictures that I made a few minor changes to the design. The small vertical fins on the front canoes(not on the full size boat). The twin engine exhaust( no such animal). And finally the shape of the Engine cover is my own design. Quite an improvement I think. The paint scheme too was all Greenman407.
    Last edited by greenman407; 12-30-2010, 05:30 PM.
    IT TAKES GREAT INTELLIGENCE TO FAKE SUCH STUPIDITY!
  • greenman407
    Admiral
    • Feb 2009
    • 7530

    #2
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ID:	58612 The propshaft skeg was adjustable from inside the rear compartment for height and angle. Another thing that I tried was a telescoping antenna.
    Last edited by greenman407; 12-30-2010, 05:32 PM.
    IT TAKES GREAT INTELLIGENCE TO FAKE SUCH STUPIDITY!

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    • greenman407
      Admiral
      • Feb 2009
      • 7530

      #3
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ID:	58616 The die cut pieces really cut out a lot of work as they went together well.You have to put together a jig(parts included) to keep the build going together straight. You can see the shortcoming of this boat in that the space for the fuel tank was limited to a 8 ounce tank. Its important that all edges that touch the water terminate in a sharp edge to keep down drag.
      Last edited by greenman407; 01-27-2012, 01:51 PM.
      IT TAKES GREAT INTELLIGENCE TO FAKE SUCH STUPIDITY!

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      • greenman407
        Admiral
        • Feb 2009
        • 7530

        #4
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ID:	58620 I made my own engine cover out of Plastruc plastic from the hobby store. The kit supplied parts are of wood and it was going to be difficult to get good consistant curves and durability at the same time out of such thin material so I opted out.Click image for larger version

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ID:	58621 I hated to see wood grain in a finished boat and that always happened over time so this one I used fiberglass cloth and that was a good choice but using Hobby Poxy clear to cover it was not. Really good stuff for fuel proofingClick image for larger version

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ID:	58622 a paint job but not forClick image for larger version

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ID:	58624 a wood grain filing/covering job. I liked to never get it sanded down, about killed me. Here you can see it all sanded.Click image for larger version

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        Last edited by greenman407; 01-27-2012, 01:53 PM. Reason: spelling
        IT TAKES GREAT INTELLIGENCE TO FAKE SUCH STUPIDITY!

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        • greenman407
          Admiral
          • Feb 2009
          • 7530

          #5
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ID:	58625 Here you can see a big mistake that I made before it gets covered up by the skin. The little 2 ounce fuel tank to supplement the meager 8 ounce tank sitting in amongst the small compartments filled with foam. Its this tank that caused the demise of this boat. Once it was all sealed up under the deckingClick image for larger version

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ID:	58627 and put into service it started to leak. Wood and glow fuel dont mix. So from that point on it was used just for display.Click image for larger version

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ID:	58626 I am a big proponant of rattle can painting, as good results are easy to obtain even though I have an air brush and access to spray painting equipment at work, it never seemed necessary.
          Last edited by greenman407; 01-27-2012, 01:54 PM.
          IT TAKES GREAT INTELLIGENCE TO FAKE SUCH STUPIDITY!

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          • Kazzer
            *********
            • Aug 2008
            • 2848

            #6
            Greenman407

            You're doing a great job here. Perhaps I should start carrying some product for these boats? Maybe Mtroniks Speed Controllers and brushless motors for a start?
            Stop messing about - just get a Sub-driver!

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            • greenman407
              Admiral
              • Feb 2009
              • 7530

              #7
              And now finally to the engine.Click image for larger version

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ID:	58628 The venerable K&B 7.5 marine engine. An economically priced engine with outstanding performance. Only if you were the most serious race minded individual would you be looking elsewhere, and then the advantage of a Nova Rossi or a Picco or a O.S. would be slim if measurable. I would suggest however that until you have more experience with these engines to take the exhaust throttle off and replace it with a carburater, at least in the beggining.
              Last edited by greenman407; 01-27-2012, 01:55 PM.
              IT TAKES GREAT INTELLIGENCE TO FAKE SUCH STUPIDITY!

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              • greenman407
                Admiral
                • Feb 2009
                • 7530

                #8
                Thanks for watching. Yes electric boats are becoming more popular nowadays. Its interesting that the world speed record for the past 4 or 5 years has been held by electrics. Its well over 100 m.p.h.
                IT TAKES GREAT INTELLIGENCE TO FAKE SUCH STUPIDITY!

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                • greenman407
                  Admiral
                  • Feb 2009
                  • 7530

                  #9
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ID:	58632 There is the dastardly devil right there!!! This tuned pipe is made by an unknown company. It cost me a lot of aggrevation. I bought it from Toys for Big Boys out in California (now out of business) as a pipe for a 7.5 inboard. In use it caused the boat and engine to be uncontrolable. But at the time I didnt know that it was the pipe that was at fault. Over time I narrowed it down. The difference is that compared to other pipes that work well it is too small for a 7.5 and too big for a 3.5. Also a tuned pipe is usually made up of two divergent cone shaped sections welded together. This one is formed out of one piece and the large diameter section in the middle is 1 1/2" long. This combination makes this pipe one to be avoided like the Bubonic plague!!! You can see it in the pictures of the engine install.
                  Last edited by greenman407; 01-27-2012, 01:56 PM.
                  IT TAKES GREAT INTELLIGENCE TO FAKE SUCH STUPIDITY!

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