Hi Phil
This is a dual rotor.
I'm not being argumentative, just picking your brains.
You say:
when your blades reach autorotation and you throttle up it would probably roll over on it's back
Will it roll over, or loop over?
If you want to try a real stunt, create a spool on the underside of the rotor hubs and wind about 50 feet of light nylon line and stake them to the ground. Go full throttle and you're guaranteed a launch. It's a great demo.
WOW, that sounds like it would really be cool. I think I save that for maybe the second flight!
Unless you hand launch, a tail dragger is a must. You must have a real tall landing grear that reaches out in from with the engine and spread real wide. Otherwise, it will just ground loop before the rotors reach autorotation.
I was hoping that the trike gear would prevent ground looping. One good thing about the FA-61 is even though it had a nose wheel, it also had a tail wheel. I'll build it so all I have to do is turn the mains around to make it a tail dragger, the rotors are already be adjustable.