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Thread: HK Tek Sumo FPV

  1. #11
    I see you... Derrick's Avatar
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    The only thing I can think of that might work is to move the motor in toward the nose you should be able it move it to just behind the aft most short spars. This will help get a little cg back... Some people are doing prop in slot on some wings. I believe that you can see this in the build instructions for crashtesthobbies deep reaper.

  2. #12
    Addicted to FPV MonZon's Avatar
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    With adding GPS+OSD and gyros(which I don't really use, they wobble a lot) my CG moved to 212mm. According to manual it must be 200-212mm. Somehow acceptable, but I don't feel that it will fly great. I'll try to add some coins...

    @Derrick - thanks, but I don't like to move a motor - its too much trouble.

  3. #13
    I see you... Derrick's Avatar
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    It is a little bit of work... But it is also the heaviest component on the plane other than the battery and the airframe itself. Moving it will give you the biggest bang for your buck if you need to adjust your cg.

  4. #14
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    But I'll need to cut more foam and elevons, which I don't like at all =)

  5. #15
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    Here is what I've figured out:
    Click image for larger version. 

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    What do you think about such placement?

  6. #16
    Addicted to FPV MonZon's Avatar
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    And another idea:
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    Here ESC mounted on the bottom side of the wing, flush with surface.

    I like this way better, but I'm not sure whether pushrods will affect both VTX and RX?

  7. #17
    I see you... Derrick's Avatar
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    Looks pretty good... where are you putting the batteries? I adjusted things on mine so that I could put the battery on top of the wing, something about belly landings with electronics at the mercy of the surface you are landing on didn't sit right with me.

  8. #18
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    Quote Originally Posted by Derrick View Post
    Looks pretty good... where are you putting the batteries? I adjusted things on mine so that I could put the battery on top of the wing, something about belly landings with electronics at the mercy of the surface you are landing on didn't sit right with me.
    Second placement is ok? No problems with pushrods?

    I'm using 3s2200 battery on the belly. I just couldn't find a place to fit it on topside.

  9. #19
    I see you... Derrick's Avatar
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    Both options look like they will work just fine. Why are you concerned with the pushrods?

    What about leaving the battery where you have it on the bottom, but just moving it to the top?

    Looking forward to your progress, I might order a second tech sumo just to make it dedicated FPV.

    This is what i am running on my Tek Sumo right now (toward the bottom of the first page are some pics), I don't really like it though. The camera dosn't adjust to the light very well. However it is light!
    http://fpvlab.com/forums/showthread....hz-Transmitter

  10. #20
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    Pushrods are metal and 90 degrees to video and RX antennas. Can they weaken the signal?

    I can't move battery to the top, cause of my camera sitting over there. If I could use 2 batteries like that - then I would put them on sides, but my motor is too weak. Maybe I should upgrade my motor as well =)

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