Thanks for the replies! I learned some things I didn't know such as autorotation.
One more quick question. if any of the rotors fail, you have to shut the engines off or you'll end up in a spin right? I've always wondered how much control you have in those situations (when entering a spin and when in that autorotation thing).
Autorotation only works if your engine fails (or your driveshaft, or something with your drive system).
Main and tailrotor are connected which means you still have full control in an autorotation all the way down....
If your tailrotor fails, you could try landing your helicopter like an airplane on a runway or enter autorotation since you need you tailrotor mostly for compensation torque which goes away when you turn the engine off....
if your mainrotor fails (swashplate, pitchlinks, blades, scissor links, shaft). . . you're screwed. People often ask me what happens if a blade was to come off. Answer: you wouldn't even know what happened. These blades pull on the mast with over 20,000lbs of centrifucal force. If one was to come off it would instantly snap your neck. So I am not too worried about it...