This is a subject that I have been trying to find more information. Sorry Guys but I have only just joined your heated debate.
I am looking to manufacture an osprey of approx 96" wingspan using two petrols converted from glow engines using an electornic syncrinisation between the 2 engines from roll control. My thought on the tilt mechanism would be a worm drive from electric motors controlled from servos.
If when landing and taking of the aircraft is operated with engines at 45' then take off and landing can be made relatively slowly in aircraft mode with normal aircraft controls.
If there is a stiff breeze then the rotors can be moved into a more vertical position using the breeze over the surfaces for control.
Am I missing somthing on this?