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Old Jun 28, 2013, 10:40 AM
pug398 is offline
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Originally Posted by melalex View Post
Hello everyone.
I trying to make my first quadrocopter.
I need advice as your help.

Controller KK X Multicopter Black v5.5
4xESC 30A
4xMotors 1200Kv (250W)
4x Propellers 1060

Firmware: kk multicopter v5.5

I calibrated ESC
then i calibrated KK Board
i tested this board without propellers, shows me all super! ... untill

i set the propellers.

When I've used propellers, and the throttle is between 25-40% operate, everything is ok. The controller (X Copter) works as it should in the datasheet. But if I set throttle position about 50% , two motors failed, if i changed this position further to 80-90%, still worked just one motor.

The question is: not sufficient to power? I use now NiMH 4800 mAh 7.2V
I can buy a lipo 11,1V 5000 25C but i dont know, if i can reach a better result.
You must calibrate the esc throttle range first. Easiest method is to plug each esc into rx throttle channel and calibrate according to esc instructions. It may be esc is losing sync with motor. If that is the problem set esc timing to medium if it is set on low.
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