Hi,

I have a esky honeybee cp 2. I'm having a problem of which I can't find the cause. Sometimes I want to take off but I can't get above the 5-10 cm with the thottle at 90%. When increasing the throttle I can hear the motot having diffculties to maintainthe rotation speen and the heli is losing his height. But sometimes from on second to the other the heli is increasing his height like a rocket and I can hear the motor running very faster.

What could be the cause of this? I am using a lipo battery.