MPC Delta Katt

Discussion in 'Rocket Boosted Gliders' started by James Harechmak, Jan 31, 2019.

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  1. Jan 31, 2019 #1

    James Harechmak

    James Harechmak

    James Harechmak

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    A quick build while waiting for painting weather. Balsa was die crunched, I'm pretty sure the last one I built had the templates printed on the balsa. IMG_20190124_005305926.jpeg IMG_20190124_005730072.jpeg
     
  2. Jan 31, 2019 #2

    James Harechmak

    James Harechmak

    James Harechmak

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    A couple coats of sanding sealer and it's good to go. IMG_20190124_013156973.jpeg IMG_20190124_081923024.jpeg IMG_20190124_131748833.jpeg IMG_20190124_231858417.jpeg IMG_20190124_231909252.jpeg IMG_20190125_155648467.jpeg
     
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  3. Feb 2, 2019 #3

    Amsterdam

    Amsterdam

    Amsterdam

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    I built one of these from scans I found on the internet built for Estes mini engines. During hand tosses I had issues with the glider rolling, so I removed the two anhedral tips, and made a center rudder with about 75% of there combined surface area. That got it to stop rolling and the glide was quite impressive from a hand toss. But I could never get it to hang on for boost. Even after a few modifications, Separation was always premature shortly after it cleared the rod.

    This last tweak here hasn’t been tested, out of frustration I glued two long extensions to make the glider fight more to fall off on boost

    [​IMG]
     
    Last edited: Feb 2, 2019
  4. Feb 2, 2019 #4

    James Harechmak

    James Harechmak

    James Harechmak

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    It's been 25 years or better since I built my last one but I vaguely remember having to put some clay weight on one side to cure rolling and impart a circular glide. Boost separation is a problem with it. There's a fine line between the pod being too loose or tight on the glider. I built up layers of sanding sealer on the tip and sanded back to get just the barest snug fit. If separation is a fail I can sand a little more sealer off or add more for early.
     
  5. Feb 3, 2019 #5

    Rktman

    Rktman

    Rktman

    Eric Noguchi

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    Interesting to see that the dihedral is in the canard instead of the main wing. Didn't realize that it used 13mm motors. Hope you post the flight report on this one, I have the plans and have been contemplating building one.
     
  6. Feb 3, 2019 #6

    James Harechmak

    James Harechmak

    James Harechmak

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    If it ever quits raining/snowing and the winds die down I'll get a flight report in. The last one I built flew well when pod separation happened at the right time. If you go by the actual MPC instructions the motor block will be too far forward, use an Estes mini to seat it with about a 1/4 inch of the motor sticking out.
     
  7. Feb 3, 2019 #7

    Rktman

    Rktman

    Rktman

    Eric Noguchi

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