Welcome to PhantomPilots.com

Sign up for a weekly email of the latest drone news & information

Bad AXi motor install

Discussion in 'General Discussion' started by MonsieurAnon, Nov 18, 2014.

  1. MonsieurAnon

    Joined:
    Nov 22, 2013
    Messages:
    353
    Likes Received:
    0
    Location:
    Melbourne, Australia
    Video of the problem; http://youtu.be/h00GlKrCYG4?t=37s

    So, my present problem is this:

    I installed 4 AXi motors, and confirmed that they worked with a hover test, but then it went into serious oscillation when it had to correct itself.

    So I decided to try using a motor adapter and 9443 props instead of the carbon fibre ones that worked with the default adapters. I went out to give it a flight today, and the front motor visible in this video doesn't start as quickly as the others ... it goes back and forth a bit before starting to spin, and then it only spins at about half the speed in idle.

    I didn't catch, or notice this before take off and I think the quad got about 10cm of air in a flipping motion before biting the grass, which seems like a logical reaction to having a funky motor. Any ideas what the most likely culprits are for this?
     
  2. RDCF550

    Joined:
    Oct 22, 2014
    Messages:
    86
    Likes Received:
    10
    Location:
    USA, VA
    Swap your CCW motors. If the problem goes to the other arm, you have a bad motor. If the problem stays on the same arm, you have a bad ESC.
     
  3. MonsieurAnon

    Joined:
    Nov 22, 2013
    Messages:
    353
    Likes Received:
    0
    Location:
    Melbourne, Australia
    Ah, that's brilliant; a binary test. Thank you!