Motors are super weak! Please help.

'Ok I have tiger motor 3506 pancake motors that are 620kv with 12 in props on 4s and when I give it full throttle it's super weak maybe climbs 3ft a second. My friend has the same setup but without the APM 2.5 and his has stupid power. What do I need to change in the APM? I've already calibrated the escs to my rx. Do I need to try and recalibrate them to the APM?

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  • Ok My radios throttle pwm low is 1100 and its high is 1900. When I full throttle my escs they only go to 1712. I can't see to get my APM to calibrate my escs. Somebody with a phone please call me I'm not getting anywhere.
  • Can any of you guys talk over the phone or Skype? If you can I'd apprecciate it. I want to get this tricopter flying right.
  • Yup this sounds like ESC cal. 

    Go into mission planner, calibrate your radio.

    Disconnect APM.

    Put throttle to high, plug a battery into your quad, then unplug it.

    Leaving throttle high plug a battery in again, then drop your throttle to zero. You will hear a couple of confirmation beeps. Slowly raise throttle, all motors should spin together. Disconnect battery. You should now be ready to go.

  • Did you perform THIS calibration?

    It calibrates the APM output to the ESC -- not the same as ESC to RX.

    -=Doug

  • Maybe a new LiPo with higher C - rating?

    What LiPo do you use?

    Did you calibrate all of your ESC?

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