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F450 jerky in flight

Discussion in 'Recreational sUAS Flyers Discussions' started by ARK, Mar 29, 2016.

  1. ARK

    ARK New Member

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    Mar 29, 2016
    OH
    Posted by ARK, Mar 29, 2016 #1
    I took my new F450 build out for its maiden flight and noticed with 100% Elevator the quad jerks periodically. Here is a video:



    Any ideas for troubleshooting? Thanks,
     
    Tags:
  2. Hoki

    Hoki Member

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    Virginia
    Posted by Hoki, Mar 29, 2016 #2
    are there vibrations on the flight controller?
     
  3. ARK

    ARK New Member

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    Mar 29, 2016
    OH
    Posted by ARK, Mar 29, 2016 #3
    How would I determine if there was FC vibrations?

    I have a Naza V2 mounted directly to the DJI F450 frame. I suppose I could add some dampening between FC/frame and retry.
     
  4. hjls3

    hjls3 Member

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    Posted by hjls3, Mar 29, 2016 #4
    if you are using bullet connectors and DJI motor ESCs Id suspect the solder at bullet connector -
     
  5. XNS

    XNS Member

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    Mar 14, 2016
    USA
    Posted by XNS, Mar 29, 2016 #5
    I'd start with listing to everything that is mounted on your craft as vibration can come from multiple areas.
    But listening to your clip it sounds like something is (tweaked out) between the motors and the props, they don't sound to well up there.
    I'd remove the props and balance them or recheck the balance and rebalance them if necessary.
    Make sure all screws are secure including the motor to motor mount screws with thread lock blue.
    While the props are off fire it up on the bench, arm it and listen for any odd sounds.
    Whiles the motors are spinning at high speed tilt it forward and backward. The Naza will compensate.


    Listing your parts and the settings you have helps others help you faster. :)
     
    Last edited by a moderator: Apr 5, 2016
  6. violetwolf

    violetwolf Member

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    Posted by violetwolf, Mar 30, 2016 #6
    Pictures of the build will be helpful too.
     
    2 people like this.
  7. XNS

    XNS Member

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    Mar 14, 2016
    USA
    Posted by XNS, Mar 30, 2016 #7
    Agreed!
     
  8. sledge57

    sledge57 Member

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    Michigan
    Posted by sledge57, Apr 5, 2016 #8
    Are you positive the copter is jerky and not the gimbal? My Iris + had a similar issue but it was the gimbal jerking up and down. That said it doesn't sound good in the air.....
     
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