There is a switch on the TX and when you flip it no matter where the throttle stick is the head speed increase a lot. On a CP helicopter lift is not regulated like with a coaxial or FP helicopter by head speed but by the pitch of the blades. Other words if you take a coaxial or a FP and give it a higher head speed it is going to lift with a CP it is not going to lift but by the pitch of the blades. Hope this helps.