Originally Posted by edi
I have a question concerning the tilt of a two-rotor autogyro (twirl-style): Could I add roll control by simply tilting the two rotors to a side and wouldn't the forces cancel each other out so the servo load won't be big?
In this question, do you intend to have both rotors tilt right to turn right or are you thinking one rotor tilted forward and one tilted aft to make a turn?
In either case the rudder may be a better solution, unless you are trying to accomplish something else. For a twin rotor gyro the rudder is simpler, it works well, and it gives you steering control on the ground.