• im definitely curious too. i had a x525 with kk2.1.5 that flew well. i switched to apm 2.6 and f450 frame to gain features but same motors/props and esc's and i also cant get mine airborne now. so if anyone has some advice id love to hear it also please. probably guessing you all are having a similar problem where at 50-60% throttle it will no longer try and take off unless you move pitch and yaw fast but it will only get a ft off the ground for a few seconds?  

  • The number is scaled in MP so 1000 should equal 100 percent throttle.  Make sure your PWM inputs from the tx are 1000 low and 2000 high.  Then recalibrate the transmitter and ESCs.

  • who can answer it?

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