Silsoe; how does anyone tell private helicopters from corporate? Clearly impossible, and even identfying what are public service helicopters is not easy. So reference to 'private' is probably fairly meaningless - apart from perhaps indicating your chip-on-shoulder mentality.
Rotor speed, May I suggest that you get off your high horse and read the first post in this thread before going off on one; as far as shooting oneself in the foot situations go, that has to be a classic
