Hi Rotorheads,
I've always been intrigued by torque-free rotor drive systems, so I developed one of my own. What experiences, if any, have you fellows had with tip-jet designs, cold or hot, or with prop-driven rotors. I rather enjoy criticism, at least the creative type.
So let's have the long and short of it. I'm up for it.
nullPropCopter Ultra-Light Helicopter