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prop orientation which way to go.

Posted by Johann Van Niekerk on August 8, 2011 at 2:37pm

Hi Guys I’ve taken on a new project.

 

And need to some help

I want to take a standard Quad copter and extend the arms , then place two motors on each arm I.E. have 8 motor on quad configeration connected in parallel as a Quad

 

My question is does both motors on each arm need to spin the same direction? Or can I make them spin opposite to stop oscillation?

 

Any ideas?

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Replies

  • swordfishBob August 8, 2011 at 6:10pm
    At that length I'd be bracing the arms anyway.
  • Rui Manuel Cravo Marques August 8, 2011 at 5:21pm

    Away from beeing a expert, I believe if you put the 2 motors spinning opposite directions, it will be less stressing for the arm and the entire structure. If both spin the same direction, you will have twice the torque (depending on motor placement) on the arm, affecting the fixation point to the structure.

  • swordfishBob August 8, 2011 at 4:40pm
    Interesting question. I'm inclined to think "same" would give you a little more lift. Are you proposing X or + configuration?
    You may want to set up a custom mix, where only the outer props are used to control yaw.
    They'll be long arms...
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