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3DHS 75" EDGE 540 V2 Assembly Thread

Discussion in 'Giant / Scale ARF Build Threads' started by AKNick, Oct 11, 2018.

   
  1. AKNick

    AKNick 150cc

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    Well had my motor do a loud chirp today when punching out of a maneuver at low altitude. No throttle, prop windmilled. Barely made it back, had to skid turn to slow it down and pooped it on next to the runway. Looks like a connector got very hot, there is splattered solder on the inside of the cowl it looks like. Not sure if it shorted out on the engine mount or what... ESC no response, just shakes the prop and I get a yellow flash followed by three red ones.
    When I plopped the plane down it bounced off the main gear, hit the tailwheel and broke it off and settled back on the mains. Main gear is in good condition.
    The good news is I have a DA35 ready to go in this plane :)
    E5E6CEBA-1B88-4274-B8D3-9966B41969ED.jpeg 7A964A08-AE44-4DC5-B732-DBDA6FF8C4D2.jpeg 28D5BB3E-D92F-4F66-A499-02D196D0BE2A.jpeg
     
  2. AKNick

    AKNick 150cc

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    Looks like the motor connector plugging into the ESC vaporized.

    3ADB7617-49A4-499B-AADE-68BF67B7BD8F.jpeg BCD6B7AF-39CE-4471-9699-AE129EC291CE.jpeg 9440E393-D40E-4914-926C-06932EDE00E6.jpeg CB63F3C3-AE01-4A5D-BDF5-CA687D0C86C2.jpeg 1EE8D01C-CEA7-48CA-8887-534AAFCD9C19.jpeg E437E223-6B3E-403D-A5D7-A67B1284E92A.jpeg

    But why? The other connectors don’t show any signs of arcing. And the bullet connector was left inside the ESC receptacle. Sounds like a bad solder joint, internal resistance at 50v could get hot and vaporize that sucker.
     
  3. AKNick

    AKNick 150cc

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    As an electric setup, My CG was about 1/2" behind the wing tube, had to add 3 oz of sticky weights in the tail and two 6S 3300-3700 lipos up front butted up against the wingtube, which gave me 4min of 3D flying.
     
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