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Worm screw and motor not engaging

Discussion in 'Inspire 1 Help' started by Winston, May 2, 2016.

  1. Winston

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    Hi all,

    Got a problem with the worm screw not engaging with the motor. If I manually push the screw toward the motor housing whilst turning the screw (relative to lowering or raising) it will engage, however in normal operation it skips out of gearing and the motor runs on, also leaving the worm screw to move laterally.

    Any ideas why this would be occurring?
     
  2. pwackinspire

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    The worm screw is secured by a bearing and a plate which holds the bearing in place at the bottom of the worm screw.you need to remove the botom of the airframe to gain access.if these are secure i can only think that the servo motor has come loose because when both the servo and bearing are in place the worm screw cant move up and down.

    If both are secure you may have a worn servo motor?

    Its probably best starting at the servo on top as its easier to remove the top of the airframe than the bottom.

    Good luck
     
  3. Winston

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    Thanks for your reply.

    I've noticed the the worm screw is moving freely at the bottom of the airframe. The nut at the lower end if the screw doesn't seem to stay in place like I suspect it should.

    Here's a pic once the screw has become disengaged showing the nut at the end of the screw moved when gear is moved manually.

    [​IMG]

    The inspire just came back about a month ago from repairers and is a hybrid of parts from a waterlogged v2 and crashed v1. The central frame unit is from the v2.

    The repairer is taking no reponsibility saying "that's the risk with 2nd hand parts".
     
  4. pwackinspire

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    Hello

    It looks like your bearing retainer has come loose , have a look at the photos below

    Pic 1 bearing and retainer plate as they should be installed

    Pic 2 Bearing and retainer plate

    Pic 3 Bottom of the airframe removed , bearing installed , this should keep the wormdrive shaft in place

    Pic 4 bearing retainer installed , once this is installed the bearing and gear raise assembly should be solid , no up and down play in worm drive shaft.
    20160503_161030.jpg 20160503_161040.jpg 20160503_161050.jpg 20160503_161101.jpg
    Hope this helps

    PwackInspire
     
  5. Airwolf913

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    My Inspire (as of yesterday), will not retract landing gear. I noticed mid flight that the black housing around the worm screw had torn itself completely off exposing on the worm screw spinning freely. I had to catch land my bird bc the landing gear wouldnt retract. Do you suspect that the whole Center Frame Assembly be replaced or just the black tubing and motor be replaced?

    I apologize for my ignorance, Ive only had my Inspire 1 since late March.
     
  6. The Editor

    The Editor Moderator
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    Has it suffered any kind of crash or hard landing?
    If not, since it is less than three months old I would send it straight back to the dealer.
     
  7. Airwolf913

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    Yes. I had one crash from about 15ft. The bird hit every branch on the way down and landed in a bush of leaves. Nothing looked aesthetically damaged from my eyes. This could have certainly been harboring something on the inside. This crash was about 4 weeks ago and I have not had any calibration errors. I have never had an issue during flight either.
     
  8. Airwolf913

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    I should also note that when powered off, even when I manually retract the landing gear, the weight of the quad can't be supported by the Center Assembly. It slowly descends down until it crutches on the camera or I just put something under the battery for support.

    Any guidance is appreciated.
    Thanks.