I'm sorry, vtol, but I just can't see why you think its better a dual rotor setup.
In fact, I had not any doubt about whether using a dual or single rotor, for these reasons:
- Dual rotors require twice the number of blades of a single rotor. However, the time and the efforts it takes to make them are not reduced to the half, but the opposite thing.
- They are more difficult to build.
-They are difficult to set up and control using a DC system.
The plan was keeping the plane's controls (throttle, elevator, rudder) and add two extra servos on the pilon for DC control on the rotor.
I wonder could you make it decent glider. I haven't seen many ideas in the "autogyro glider" thread .