The Flip Thread

Discussion in 'DJI General Discussions Forum' started by DesJardins, Sep 20, 2012.

  1. DesJardins

    DesJardins New Member

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    Share why your ditching the DJI motors... Here is my reason finally caught on tape after 4 prior random flips. I'm done with the DJI motors & bullet connectors.

    T-motors MT-2212-16's (750Kv) are on their way!
    Also looking at the MT-2814 (770Kv)



     
    Last edited by a moderator: Nov 22, 2014 at 3:24 AM
  2. Jackella

    Jackella New Member

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    bet that was annoying,it was flying so well.
    More than likely a poorly insulated motor winding,works fine when cold and when warmed up will short circuit and voila.
    seen this a few times recently,poor quality control on the motors.
     
  3. skipper1

    skipper1 New Member

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    That's not good. I see why you would want Tiger Motors.
     
  4. DesJardins

    DesJardins New Member

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    Yup, after the first few times it went away with a new motor and 20 flights or so later... BAM AGAIN.

    I'm loading another video that shows how high I was just minutes before, it shows how luck I am it happened after my high flying.
     
  5. kloner

    kloner Aerial DP

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    i had a 330 i moved my 2215's to but i tried the rctimer 18 amp esc's........ mid flight if you did anything but hover it did the same thing. That was cured by a new esc.......
     
  6. skipper1

    skipper1 New Member

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    I think I'm ready to get some Tiger motors for my F450. This may be a dumb question, but I'm trying to learn from the experts. Will the DJI 30A ESC's work well with the Tiger's or do I need to consider a different ESC?
     
  7. DennyR

    DennyR New Member

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    With all of the Flip of Death analysis going on at the moment it does seem to point towards ESC problems as the main cause.
     
  8. DesJardins

    DesJardins New Member

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    I haven't received them yet but should be good based on them being tested with a 30amp ESC on the specs page.



    I verified the first was a bad motor not an ESC, second flip I swapped the 2nd flipping side motor to a different arm and flip happened on the new side. My results show horrible motors
     
    Last edited by a moderator: Sep 21, 2012
  9. skipper1

    skipper1 New Member

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    Thanks, Des. Since you have motors on the way, I'm holding off to see how it works for you. If I need new ESC's, I'd like to get everything at the same time.
     
  10. DesJardins

    DesJardins New Member

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    Anytime!
    I'll report as soon as I get them, I'm just crossing my fingers so I can toss on my FPV gear finally
     
  11. kloner

    kloner Aerial DP

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    I've ran the dji esc's from the start on my 450's, the only time i've had a problem was the rc timer stuff. i'd leave the dji esc's with any motor swap... mine got the 2814 and 2810, they recomend 40 amp for a plank, but in fpv flying them in atti, i don't even get into 15 amp draws per motor. there 30 amp esc's and the important thing, 450hz refresh and opto so they are opticaly isolated with a piece of fiber optic cable between the voltage in and the servo output. keeps noise down
     
  12. DesJardins

    DesJardins New Member

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    Good info Kloner, thanks for that!
     
  13. DesJardins

    DesJardins New Member

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    Here was the prior flight that I'm happy it didn't happen on!
    :dejection:

     
    Last edited by a moderator: Nov 22, 2014 at 3:24 AM
  14. DesJardins

    DesJardins New Member

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    Here is a pic of the nicer solder joint & from what I can see the wires are not "pre-tin'd". That in combination with the crappy bullet connectors that are not all consistently tight I would re-solder the bullet connector & once the bullet connector is installed maybe heat shrink the connector to the ESC pot or direct solder if you plan on using your DJI 2212's...


    [​IMG]
     
    Last edited by a moderator: Sep 22, 2012
  15. DesJardins

    DesJardins New Member

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    Ok, first set of motors to "test" are the MT-2212-16 T-motors.
    i'll be posting back up as I'm hoping they are in stock local for a quick drop-ship pick up.

    These will be the direct fit replacements for my 3S set-up parallel FPV flying.
     
    Last edited by a moderator: Sep 23, 2012
  16. skipper1

    skipper1 New Member

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    I'm waiting on Des to get his new motors before I continue my F450 build.
    In the meantime, I'm messing with my recently built Flydumini. Naza, Hobbywing 10a esc's & Tiger MT1306-10 3100kv. At first I got serious wobble so I backed the gains off and it straightened out. I still get drifting but am working on that.
    Here's my current big problem. My back right motor gets hot. I switched the motor out with a new one and it gets hot too. I'm betting it's the ESC, what would you think?
     
  17. DesJardins

    DesJardins New Member

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    Is it balanced? I had weight more forward at one time (not balanced properly) & my front motors were hotter. They were being worked much more than the rears!

    Do those ESC's need to be calibrated?




    The 2212 T-motors will be here Wednesday!
     
    Last edited by a moderator: Sep 23, 2012
  18. skipper1

    skipper1 New Member

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    Thank you for that. The back is a little heavier. But why would just the one right rear get hot? There is so little room on this thing that I really don't know how to distribute the weight. I have 400 skids on it so maybe a little weight in front on the skids?
     
  19. DesJardins

    DesJardins New Member

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    It could be that very small weight transfer that over the flight has that rear side working way to hard. I use a wine cork to balance my quad on, it makes sure there isn't a side that is over weight.

    I'll snap a pic of it being balanced with my little "balance cork"
    :)
     
  20. skipper1

    skipper1 New Member

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    Cork! I would have never thought of that one.
    BTW, I think you're really going to like those Tiger motors. Even though these that I have are really small, they just sound great. I have a feeling they're going to perform really nice. I'm excited for you, full report with pics and video please.
     

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