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  1. #1

    Dumas Pay n Pak 30"hull

    I am new to RC boating and I have had and am going to build this boat since I have had it forever. i have what I believe to be a size 21 motor and the kit itself. Could any of you builders suggest current build changes i could make as well as current hardware I could use. The Dumas hardware looks a little dated to say the least. I will post pics of the motor as I would like help in identifying it. Thanks for any help you guys can offer. I have done the RC car and Plane thing and just want to try another venue to keep the interest going, THANKS!

  2. #2
    Click image for larger version. 

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ID:	2006343heres the motor, Any insight?

  3. #3
    Any Help on motor would be great, especially with tuning once its mounted

  4. #4
    advanced builder's Avatar
    Join Date
    Feb 2006
    Location
    Baldwinsville, NY
    Posts
    3,051
    At the cable coupler. Turn fin should be close to CoG within 1/2" A mono hull is 1/3 of the total hull length.. measured from the transom. A hydroplane is just behind the back of the sponsons. CoG is measured with fuel on board. Do you mount the engine forward or back in the engine bay that's up to you.You'll get suggestions for both.
    Stoney Pond Model Boat Club, Canandaigua, NY
    International racer
    http://neilsrcsite.shutterfly.com/

  5. #5
    Thanks for the input, it is greatly appreciated

  6. #6

    Join Date
    Nov 2004
    Location
    Marysville, WA
    Posts
    5,248
    I would recommend reading through my two Pak build threads and including at least two of the changes I made:
    1) move the bottom break back to frame 6 rather than frame 4 as in the instructions
    2) do not use the supplied wood blocks as engine mounts. They won't fit if you redo the bottom as I suggested and are heavy and awkward to finish and clean around later.
    As far as hardware, I'd look at Speedmaster and Aeromarine for the rudder assembly and strut. There are other options on turn fins and engine mounting. One thing you need to remember is that the stock engine bay IS NOT 4 inches wide so it may cause issues using the engine with the required 180 degree header

  7. #7
    Anyone have any tips on painting, primer to use? brand and kinds of paint would be helpful. Also was wondering if you just apply primer on the bare wood (no sealing)?
    Thanks for any help!

  8. #8
    Click image for larger version. 

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ID:	2020044This is the boat to date. Made the canopy myself with fiberglass cloth and epoxy over foam plug that I carved and sanded to shape. Again any help on paint finishing would be great

  9. #9
    Ron Olson's Avatar
    Join Date
    May 2002
    Location
    Kalamazoo, MI
    Posts
    18,332
    It looks like a vintage Rossi engine. The newer ones have an Italisized "R" on the sides.
    IMPBA 17238 S
    269 Racing Team

  10. #10

    Join Date
    Nov 2004
    Location
    Marysville, WA
    Posts
    5,248
    I'd still slap on a thin coat of epoxy as a base for whatever you paint it with. I painted my first boat without sealing it first, was a mistake I'll never make again as the boat tended to soak up water and had issues retaining the paint


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