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Analyzing crash

Discussion in 'General Discussion' started by fish, Nov 30, 2014.

  1. fish

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    I just had my first crash with a Phantom 2. While flying over a field the Phantom made a sudden move and headed down at an angle towards the ground. We found it in said field still powered on and attempting to dig itself a nice hole. The damage:


    • 3 broken props
      Bent gimble
      vTX hanging off
      Minor crack in frame near motor
      Lots of dirt


    2:25 I was nearing my limit for FPV, started backing up
    2:50 everything was normal and I was returning back to my starting position
    2:58 motor noise changes
    3:04 sideways dive into the ground begins

    I opened it all up and cleaned it up. The rear left motor makes a beeping noise and it tries to spin, but is stuck.

    I watched some videos of motor failures and didn't see this behavior. So far I've ordered another motor and ESC and will try replacing the motor first.

    Any feedback is appreciated. Thanks.

    Here's the video:
    [youtube]https://www.youtube.com/watch?v=3kuP4MWo9sg[/youtube]
     
  2. Noël

    Noël Guest

    Looks like you were flying in manual mode to me!
     
  3. fish

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    I was in GPS mode. My controller isn't even programmed for manual.
     
  4. Hughie

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    Beep sounds like an ESC just before it pops into a puff of smoke.
     
  5. paulajayne

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    Looks like a motor failure.

    Long full power runs are not going to do any motor good.
     
  6. Happyflyer

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    It may just be the way the camera picked it up, but it looked to me that the right motor slowed down and then the crash.
    .
    This is an example of a needed update that tells the quad when on the ground and upside down to turn off motors.
    .
    Also for all of us to think about if/when a crash happens to remember to send a "motors off" command to the quad.
     
  7. sergekouper

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    I tend to disagree with that. Sometimes the noise help to find the quad.I crashed once in high trees, I couldn't see it but I could hear it. Then I stopped the engines... and spent 1 hour (with 2 other peolple) locating it :( , plus another one recovering it. :evil:
     
  8. 750r

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    It is the first thing I do I don't want any more damage .
    At the end of his vid you can see all that dirt flying around now how much of that went into the motors . Very posable to burn parts up/overheat the way it was trying to fly agin .
    I agree with ya :)
     
  9. fish

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    I lost video signal before it went down, so I wasn't sure what the circumstances were. After a few minutes I went into FS and waited a few more minutes. After a few minutes we set out to recover it. Didn't want to kill it in mid air, but the damage was already done.
     
  10. Happyflyer

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    Well that makes a difference when you did not see it go down. Shut down when in air not good idea. ;)