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Test Flight with 5 oz. flashlight

Discussion in 'Pro/Adv Discussion' started by NJDroneDude, Aug 26, 2015.

  1. NJDroneDude

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    I am going to add a 5 oz. flashlight and record hover time. With fully charged batteries, what time may I possibly achieve?
    Anyone have a formula for adding weight and calculating flight time?
     
  2. N017RW

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    Too many variables to calculate.

    Best determined empirically.
    Let us know!!!
     
  3. wincrasher

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    I carried two such flashlights on my Inspire and you could certainly feel the weight. Took only a couple minutes off my flight time, but that is a much bigger bird.

    Whatever you do, keep it to your center of gravity. That should make it a bit less work for your motors and should use less energy to keep the craft up and stable, resulting in longer flight time.
     
  4. NJDroneDude

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    thanks
    anyone have a reliable method for determining center of g?
     
  5. Tony Perry

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    Since the P3 is a symmetrical frame, it is literally the center of the craft. If you draw a line between the 2 sets of opposing motors, its where they intersect.

    On the vertical axis Im gonna take a wild guess and say that it is on the lower half of the body.
     
  6. FunN4lo

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    If you attach the lights to the landing gear, get 2 identical lights, one each side and your CG will perfect right to left. Then you can place a dowel (bic pen or something similar) on a table under the legs and get a ruff idea to position the lights front to rear.