First crash with my x8

Discussion in 'Cinestar 8' started by Tristan Twisselman, Jan 25, 2015.

  1. Tristan Twisselman

    Tristan Twisselman Active Member

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    So my x8 went down this afternoon and I think it is the same thing that happened to Josh and a few other people who had their copters crash. It starts an uncontrolled yaw then slowly gets worse then it started doing the death wobble dance just like Josh's did in the video he posted. I remember everyone blamed a2 when these crashes happened and some blamed Kde until someone had the same crash happen with a wkm and tiger motors. Mine was with a wkm and Kde motors. Thoughts?
     
  2. Steve Maller

    Steve Maller UAV Grief Counselor

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    Any chance that one of your motor pairs or a boom got loose and rotated a bit?
     
  3. Tristan Twisselman

    Tristan Twisselman Active Member

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    That is the one thing i know didn't happen because I have had it happen in the past when using plastic clamps but I'm using metal now.
     
  4. Andy Johnson-Laird

    Andy Johnson-Laird Administrator
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    Ouch.

    Any chance that you have any flight log data or video of the flight, Tristan?

    Andy.
     
  5. Steve Maller

    Steve Maller UAV Grief Counselor

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    Dammit. Sorry, man. Hope the damage was limited.
     
  6. Tristan Twisselman

    Tristan Twisselman Active Member

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    Go figure I was taking photos not video but it is identical to Josh's crash video.
     
  7. Tristan Twisselman

    Tristan Twisselman Active Member

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    Looks like 4 props and one landing gear leg. Dented my video transmitter but it still works. I am weary of my wkm now though for sure.
     
  8. Steve Maller

    Steve Maller UAV Grief Counselor

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    Not too bad, considering. But I can tell you from experience be very deliberate (slow) in getting her back in the air. My confidence, both in the copter and in my skills, was shaken by a similar experience.
     
  9. MIke Magee

    MIke Magee Active Member

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    Bummer. Sorry to hear it Tristan. I know how you feel. I also agree with Steve regarding a careful resumption of flying. EVERYTHING needs to be tightened up - including your confidence. At least that's the way it was for me.
     
  10. Jose Luis Ocejo

    Jose Luis Ocejo Active Member

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    Could it be the IMU i calibrate the IMU often
     
  11. Tristan Twisselman

    Tristan Twisselman Active Member

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    Thanks guys and ya it's getting completely torn down and inspected. No confidence on the machine at this point.

    Jose not sure if it could be the imu or not but it seems every crash that has happened like this was DJI flight controller. Some with Kde setup some with tiger. I'm using the wkm and metal v2 sensor.
     
  12. Dave King

    Dave King Well-Known Member

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    HI Tristan

    How many flights did you have on it?
     
  13. Tristan Twisselman

    Tristan Twisselman Active Member

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    Since switching to KDE Motor and Speed Controller combo maybe 35-40. IMU is the v2 metal imu and i got it for my WKM right when it came out.
     
  14. Michael McVay

    Michael McVay Active Member

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    What firmware version are you running on the WKM?
     
  15. Dave King

    Dave King Well-Known Member

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    HI Tristan

    What firmware are you running? I'm running a similar setup. I'm running the Wookong on 5.20 with the newer Metal IMU, flat 8, with KDE 4012's and KDE ESC's. I have about 30 flights on it with just 10 pounds of dummy weight. No issues to speak of yet. The weather in Pittburgh has been pretty bad since Christmas so really no time to fly. I'll test the heck out of it and let you know if I find any issues.

    Dave
     
  16. Tristan Twisselman

    Tristan Twisselman Active Member

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    I don't think it is an issue you will find to be honest Dave. My WKM has been fairly flawless up until this point then out of the blue this happened. Hundreds of successful flights on this flight controller. I believe i was on the newest firmware 5.26? Ill double check tomorrow when i plug it into the computer.
     
  17. Dave King

    Dave King Well-Known Member

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    Hi Tristan

    I think 5.26 has known issues and the last known good firmware is 5.20. I know Michael can expound on this much better.
     
  18. Michael McVay

    Michael McVay Active Member

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    We fly one on 5.16 and another on 5.20. Those are both tried and true firmwares - both according to many people that fly them frequently and we have been flying a couple Cinestars on those firmwares for well over a year. We also fly the v2 IMU with them.
     
  19. Tristan Twisselman

    Tristan Twisselman Active Member

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    Ill update my firmware on my controller and do some test flights when my props get here.
     
  20. Tristan Twisselman

    Tristan Twisselman Active Member

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    I have done two test flights so far on 5.20 and am getting white flashes sometimes even when on the ground just sitting there motors off. I am thinking about loading up 5.16 and giving that a try.
     

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