Hi Stu,

"Dave your obvious hatred for the tail rotor makes me believe that you
have been injured by one at one time or another."

No. It was the rotorcraft industry that was injured when Igor got too eager
to get something off the ground.


"No one has demonstrated that they [twin lateral main rotors] can be
economically produced."

Henry Ford proved the economies of large-scale production. To design and
produce a few 'Ford type' cars in a local machine shop would cost more than
a half-million dollars per car. Unfortunately, in rotorcraft there is one
civilian helicopter for every half-million people.

"If you build a better mousetrap, the world will beat a path to your door."


"It just doesn't seem possible to make a ship with the additional main
rotor system and transmission system and control system that can compete
with the standard tail rotor ship."

I agree. For today's homebuilder; the price, the building, the displaying,
and the pride of flying a craft with limited stability, is the pleasure and
it is the market. The gyrocopter is epitome of this.

However, for mass acceptance, the single-rotor equivalent of the 'unicycle'
must be morphed into the twin-rotor equivalent of the lower cost 'bicycle'.

How old is the Scotch whiskey?

Dave
Not coincidentally