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2 motors stop spinning 2 seconds after the other 2 on shtdwn

Discussion in 'Phantom 2 Vision + Discussion' started by justin00, Jan 4, 2015.

  1. justin00

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    As per the topic... the 2 left front and rear motors stop spinning approx 2 seconds after the other 2 when you turn the motors off. All 4 turn off, so the 2 are not still idling, its just they stop spinning later than the other 2.... hmmm or is the problem 2 motors stop spinning before the other 2 lol :p

    It is weird because I installed the upgraded 2312 motors and then uninstalled them and put the stock motors back in (due to the Quads dropping from sky issue lol). Before I took the motors out all 4 used to stop at the same time.. When I had the 2312 motors in they also stopped at the same time.. So the problem has only shown up when I installed the stock motors back in.

    The Phantom seems to be running fine without issues, no noises coming from the motors or anything alarming. All 4 spin freely by hand and there does not appear to be any damage to the bearings or anything internal, well nothing I can tell. Lastly all 4 motors are the same temperature, not very hot at all.. the same as they have always been.

    If it was a motor or ESC issue I would of thought it would only affect 1 motor, so seems strange its 2 motors.

    I've done approx 130 flights (each battery being a flight) so I doubt they are getting tired/old... ?

    Is this something to be concerned about ??

    I wish I could just put the 2312s back in :/
     
  2. crash1sttime

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    Re: 2 motors stop spinning 2 seconds after the other 2 on sh

    When you turn the motors off are you doing left stick down for 3 seconds, or doing the CSC comand,

    Someone did mention that doing the CSC command does cause the motors to stop unevenly.
     
  3. justin00

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    Re: 2 motors stop spinning 2 seconds after the other 2 on sh

    Nah left stick down.

    Thanks for that bit of info though :)
     
  4. robinb

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    Re: 2 motors stop spinning 2 seconds after the other 2 on sh

    Have you tried swapping the silver & black motors to the opposite sides (i.e. to the correct positions) but diagonal side. ?

    I wonder if its a component tolerance issue on the ESC's and motors.

    Just a thought.
     
  5. justin00

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    Re: 2 motors stop spinning 2 seconds after the other 2 on sh

    Hmm No haven't tried swapping them.. might do that today.

    What do you mean by component tolerance ?
     
  6. gunslinger

    gunslinger Moderator
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    Re: 2 motors stop spinning 2 seconds after the other 2 on sh

    Okay... I keep reading in different forums about the actual temperature of individual motors. Does this mean I need to finally buy a cheapo gauge that measures the temperature of whatever it's aimed at? Has it come to this? (sigh....) :roll: :roll: :roll:


    -slinger
     
  7. justin00

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    Re: 2 motors stop spinning 2 seconds after the other 2 on sh

    What you on about lol ?

    I have one of those infa red temp gauges.. works pretty well :)
    However i usually just use feel to measure... Can usually tell if one is significantly hotter than the rest..
    I belelieve you want all 4 to be the same.... but anyways my infra red device only costs like $12 on ebay..
     
  8. robinb

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    Re: 2 motors stop spinning 2 seconds after the other 2 on sh

    When the electronics are made they are not all 100% the same.
    The values change on manufacture by a fraction, this is normal.
    Some will let more, some less current, timing etc etc.