Originally Posted by
jellycopter
An electric tail rotor could be switched off in the cruise and yaw control achieved by a simple aeroplane style rudder. It would save energy, reduce noise and help significantly with component life. Overall, I think this could be a winner
Or, you could have a less complicated design turned by a simple and very reliable mechanical driveshaft and have an aerodynamic tailfin which allows the pitch of the blades to be reduced to near neutral in cruise flight.
But wait, someone already thought of that...