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life time of new motors

Discussion in 'Pro/Adv Discussion' started by drones2sky, Jan 9, 2016.

  1. drones2sky

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    Hi guys,
    Does anyone knows what is the life span of the new motors on p3a/p?
    Does DJI mention anything about this?

    Thanx!!!!
     
  2. N017RW

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    BLDC motors have only bearings that move and to wear.
    Their lifetime is hundreds of hours.
     
  3. Techcop50

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    Bought my P3S in September, just now noticed a bad motor, right rear, with just 13 hrs on the bird.
    It's flopping around on the stator like a fish, feels like the bearing is shot. New style motors, btw.

    Anyone else had this issue?
     
  4. wooglin

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    Wow that's not very long. If any of mine start to wear I will probably solder in a pair of connects that way the body does not have to be taken apart to replace them.
     
  5. Techcop50

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    Yeah, I'm having the same thoughts...
     
  6. Dirty Bird

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    As with anything there will be duds but in general I would expect the motors to last into the hundreds of hours.

     
  7. Techcop50

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    Yeah the other three seem perfect, no play whatsoever, and they turn smooth and free.
    The scary part is I had just flown out 3000+ feet, 390 feet above the woods, just noticed it sounded a bit clunky upon return. Could've dropped at any time. From now on, I'll check them all before each flight, this made a believer our of me!

    Live and learn.
     
  8. Techcop50

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    4/3/2016 - Just swapped out my second bad motor, another CW one, diagonally across from the first. This one had about 24 hrs. flight time on it.
    Nothin' is as handy as a spare tire, when you need it!
     
  9. t2adze

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    How can you detect the bad motor?
     
  10. With The Birds

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    In all probability you will be enticed by a new model offering or suffer a non motor related loss before the motor bearings give way. Esp if you run balanced props and avoid hedge trimming and inverted landings.
     
  11. Techcop50

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    I do balance my props, but i'll be the first to admit my props have occasionally see greenery. But this last motor failure was not the result of that, I have not hit anything other than air for months.
    As far as detecting it goes, it was first noticeable to me as a slight wobble when changing altitude. Upon closer inspection, there was cyclic ringing noise. The final test is to: Remove the battery, wiggle the props up and down and check (compare them) for play, and any thumping or clicking noise.
     
  12. With The Birds

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    There are no guarantees however my view is if they pass the manual wobble and end float test prior to a flight they aren't likely to catastrophically fail within the next 18 minutes....
     
    Techcop50 likes this.