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Thread: HK Tek Sumo FPV

  1. #1
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    Wink HK Tek Sumo FPV

    I've been looking at this plane on HK, but never flown a flying wing before, I wasn't sure about getting it...

    Until one good day I'm not good LOS pilot, prefer FPV. After maiden I couldn't stop enjoying this wing, so it became my FPV beast.

    My setup:
    3S 2200mAh LiPo
    C2830-1000kv motor
    20A ESC
    2x HXT900 servos
    TGS Sport 8x4E prop
    FatShark VTX 600mW
    808 #11 camera + jelly lens
    AUW 705gr
    CG 206mm from leading edge

    This cutie flies so nice, I've never expected something like that from a wing!
    Expo's need to be fixed big time

    Here is some photos and couple of videos:









  2. #2
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    Welcome! Nice start, sweet second flight. You'll find yourself right at home here!

  3. #3
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    Quote Originally Posted by jimmaplesong View Post
    Welcome! Nice start, sweet second flight. You'll find yourself right at home here!
    Thanks!
    I hope so

  4. #4
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    Great flight!

  5. #5
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    Quote Originally Posted by Johnny View Post
    Great flight!
    Thanks! For humble 6-7 months experience I think it is okay.

  6. #6
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    Guys, I'm planning to move my VTx on one wingtip and Rx on another and also add GPS and OSD.

    I've placed those components on the wing to balance it in roll direction. To have correct CG I'll need to add another battery.
    Here is the photo of it:
    Click image for larger version. 

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    Right now AUW is 705 grams and wingspan is 90 cm. But after adding all this stuff my plane will be a lot heavier. Will it fly? Will it fly well and slow? What should I expect?

  7. #7
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    Go fly it and find out!

  8. #8
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    Quote Originally Posted by Johnny View Post
    Go fly it and find out!
    To fly it I need to carve placeholders, embed all the stuff inside the wing, cut and re-solder most of the wiring. Which can't be undone. So it is not an option.

  9. #9
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    Quote Originally Posted by MonZon View Post
    To fly it I need to carve placeholders, embed all the stuff inside the wing, cut and re-solder most of the wiring. Which can't be undone. So it is not an option.
    Just strap the equivalent weight to it and go and see how it flies. If it doesn't go well then you know you can't add that much weight. If it goes well then you know you are good to change everything.

    Tim

  10. #10
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    Finally, I've tried this. Results are not good. 2 batteries are really heavy. It does fly, but like a dead turtle.

    Still thinking how can I balance it without adding much weight. If anyone has ideas - let me know, I could use some. The main trouble is just when I place VTX and RX on the wings, CG shifts too much back.

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