Welcome to PhantomPilots.com

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

Props on Phantom 2 is spinning in reverse.

Discussion in 'Phantom 2 Help' started by Lroar, Sep 23, 2015.

  1. Lroar

    Joined:
    Apr 18, 2014
    Messages:
    14
    Likes Received:
    3
    I recently crashed my Phantom 2 when it hit a tree on the beach. I took it home and opened it up to blow out the sand. When I replaced the cover in the correct orientation (The decals were cut on the seam so it was easy to match them back up) the props are spinning backwards pushing the drone into the ground. I can't understand why, because the only connection interfered with was the GPS connection.
    I'd really like to get back in the air again. With your help I should be able to.
    thanks in advance.
     
  2. rockhoundrob

    Joined:
    Dec 23, 2014
    Messages:
    151
    Likes Received:
    8
    Location:
    Oklahoma City, Oklahoma, USA
    My first guess is that you check the propellers... are they on the correct motor?

    If ALL the propellers are spinning "backwards", move all of them over to the next motor. In other words, start with the first prop, take it off and move it to # 2.
    put the 2nd prop into the 3rd motor, move #3 to 4th motor, then #4 to the first motor.

    If this is confusing, then just take off each propeller and move each of them over one space.

    otherwise, you should look at the alignment of your shell again....
     
    #2 rockhoundrob, Sep 23, 2015
    Last edited: Sep 23, 2015
  3. N017RW

    Joined:
    May 2, 2014
    Messages:
    6,244
    Likes Received:
    1,614
    Location:
    Palm Beach Co.- FL
    I won't say it's impossible but...I really want to cause, well...

    The props cannot be put on incorrectly so that can't be the issue.

    In order to reverse the motor direction you would have to have swapped the location of any two of the wires between the ESC(s) and the motor(s).

    Anything else you can tell us?
     
  4. rockhoundrob

    Joined:
    Dec 23, 2014
    Messages:
    151
    Likes Received:
    8
    Location:
    Oklahoma City, Oklahoma, USA
    N107RW... by golly you're right~! well then my next guess is that when he took it apart, something got reversed to the main power.
     
  5. N017RW

    Joined:
    May 2, 2014
    Messages:
    6,244
    Likes Received:
    1,614
    Location:
    Palm Beach Co.- FL

    Sorry rhr,

    Reversing the battery polarity would let all the 'magic smoke' out of the drone (if you know what I mean ;) )
     
    jason likes this.
  6. jason

    Joined:
    Oct 12, 2014
    Messages:
    4,105
    Likes Received:
    404
    Location:
    Commerce Twp,MI
    [​IMG] Magic smoke. [​IMG]
     
  7. Mako79

    Joined:
    May 16, 2014
    Messages:
    3,413
    Likes Received:
    567
    Location:
    Sydney Australia
    Are you sure they are spinning backwards? Look at each arm, there is an arrow that shows the direction for tightening. Your props should spin the opposite direction that you have tightened.

    The other thing I can think of is that you flipped your M1-M4 (motor1 to Motor4) cable on the NAZA.
    If you have done this, then the phantom will do a flip immediately on take off.
     
  8. N017RW

    Joined:
    May 2, 2014
    Messages:
    6,244
    Likes Received:
    1,614
    Location:
    Palm Beach Co.- FL

    That's a good call M79!

    It won't cause reverse rotation of the motors but mis-connecting any of the motors would cause a problem as soon as it tries to fly. The control output would, in a sense, be opposite what the IMU is 'requesting'.

    I think the OP may not be telling us everything.
     
  9. rockhoundrob

    Joined:
    Dec 23, 2014
    Messages:
    151
    Likes Received:
    8
    Location:
    Oklahoma City, Oklahoma, USA
    LOL... magic smoke...learned something there... I actually took my Phantom out of the box and tried to put the props on wrong... IMPOSSIBLE and good to know that!
     
  10. syotr

    Joined:
    Jul 30, 2013
    Messages:
    896
    Likes Received:
    134
    This is a long shot, but check in the NAZA assistant that you have the correct model selected, "X" not "+".
     
  11. N017RW

    Joined:
    May 2, 2014
    Messages:
    6,244
    Likes Received:
    1,614
    Location:
    Palm Beach Co.- FL
    Yea.

    These aren't our Dad's DC motors. Reversal requires a bit more than a polarity swap.
     
  12. rockhoundrob

    Joined:
    Dec 23, 2014
    Messages:
    151
    Likes Received:
    8
    Location:
    Oklahoma City, Oklahoma, USA
    Another WILD idea! How about setting the Phantom on a mirror then it might trick motors into going the other way!;)
     
    TheWire likes this.
  13. Lroar

    Joined:
    Apr 18, 2014
    Messages:
    14
    Likes Received:
    3
    Thanks for the replies. Apparently nobody has had that experience.
    The phantom 2 is booting up, it's taking the compass calibration, it's setting the home point and it's seeing all the Satellites. Apart from the motors spinning the other way, the 3D gimbal is also behaving erratic and won't settle down. I had to unplug it.
    (The only props that could be interchanged are those on the Phantom 1.)
    Apart from blowing out the sand with compressed air. I had to dismantle the motors in order to give it a thorough cleaning.
    The thought about a switch in polarity came to me also, but that switching had to be done in the module, because I checked for a switch or button that might have moved while blowing out the sand, I found none.
    I checked DJI with my problem, but was referred to their agent in the US. When I tried to call, I got a recording stating some thing was wrong with their lines and I must try again later. Then they sent me a performance request form. They've got nerve.

    The only other thing that came to mind is if it will make a difference by switching the housing of the motors. The wiring and coils remained connected. But I hardly think so.
     
  14. 750r

    Joined:
    Nov 27, 2013
    Messages:
    1,226
    Likes Received:
    420
    Location:
    Pa, USA
    Did I read that right you might have put the bells on the wrong motors ? That would change the props for each arm if on wrong arm
     
  15. syotr

    Joined:
    Jul 30, 2013
    Messages:
    896
    Likes Received:
    134
    This would absolutely cause your problem. If the motor has the wrong threaded bell, then only the wrong prop will fit it and this prop will be spinning in the wrong direction to provide lift.
     
  16. Lroar

    Joined:
    Apr 18, 2014
    Messages:
    14
    Likes Received:
    3
    750r and syotr, I want to thank you for your very valuable assistance. You did it. I'm now back in the air, thanks to you guys. I can't tell you how happy I am. I don't know why I decided to clean all the motors at once, but that's how I got the bells mixed up.
     
    750r likes this.
  17. N017RW

    Joined:
    May 2, 2014
    Messages:
    6,244
    Likes Received:
    1,614
    Location:
    Palm Beach Co.- FL

    Glad you got it sorted.
    Without all the info. we often can't solve the problem and no detail is too small!
     
    750r likes this.
  18. Lroar

    Joined:
    Apr 18, 2014
    Messages:
    14
    Likes Received:
    3
    Oh yes N017RW, and I want to thank everyone for their input, including the humor too. Sure appreciate it.
     
    750r likes this.