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Thread: Quad X8 design guidlines????

  1. #1
    Pilot Extraordinaire
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    Quad X8 design guidlines????

    Hello all,

    Are there any guidelines for building a quad/X8? Specifically boom angles and whether or not the motors must be placed in a perfectly symmetrical manner. Or will a good flight controller compensate for a non-symmetrical design?

    Right now (if I stick with the tentative design) the boom tip to boom tip distance, across the center, is 36 inches (about 915mm.) The distance from boom tip to boom tip, not across the center, is about 26 inches (about 660mm.)

    The frame, a dog bone shape, and booms are designed/assembled to fold onto each other for portability and quick deployment. Iíve not yet decided on motors, props or ESCs but will welcome any suggestions. Iím thinking of using the XAircraft SuperX Pro flight controller. Again, ideas and suggestions are welcome.

    Itís going to be used for photography and video, since Iím not sure what this multi-rotor will lift, Iím not going commit to a specific camera/gimbal set up, just yet. Although Iím hoping it will haul at least a Black Magic Pocket Cinema camera, a Sony RX100 or better.

    Thoughts???

    Thanks in advance,
    Dave

  2. #2
    Full Blown Hucker Emowillcox's Avatar
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    I have heard if your gonna run 8 motors then it needs to be x with motor same space apart. Someone tried XY lay out with front arms further apart and the super x did not fly smooth. I originally planned to do a XY layout on a steady drone frame u til I heard this. I have my super x on a x quad frame and it works great.
    EMO
    "That wasn't a crash..... just a hard landing !"
    http://www.emomedia.net/

  3. #3
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    Thanks Emowillcox, this is my first scratch build and I'm just trying to eliminate numerous rebuilds. How large is your quad?

  4. #4
    I have one of Bart's XY8's and just built a larger one using a cinestar 6 center plate. Flies great with mikrokopter. If you haven't purchased the super x I would consider an mk stack. Some great deals pop up on here and rcgroups.

  5. #5
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    Multirotorxy8, thanks! Do you have a link to Bart's site?

  6. #6
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    Is this Bart's site? http://www.mikrokopter.us/

  7. #7
    Sounds like a large TBS Discovery in coaxial configuration. Coaxial is not very efficient though.

  8. #8
    Quote Originally Posted by David Lee View Post
    Is this Bart's site? http://www.mikrokopter.us/
    That is the site of the primary US mikrokopter retailer. I am not sure if bart has a site. He goes by the username Bartman here and runs this site (multirotorforums.com).

  9. #9
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    bart web site is here ;-)
    http://aerdro.com/

  10. #10
    Full Blown Hucker Emowillcox's Avatar
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    I also use one of Bart's set ups. Super nice xy8 but using hover fly fc. My super x is on a quad frame.
    MK is nice but much more complicated. The mk set up I had didn't seem to like the heat so we switched it out for hover fly
    EMO
    "That wasn't a crash..... just a hard landing !"
    http://www.emomedia.net/

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