At last a model was done, an all-metal miniature, perfect as any real service-flight plane, even to the engine on its nose. But in many phases it ignored the known rules for making the regulation type plane. It had small, fixed wing surfaces, without even an attempt at ailerons. The rear spread into an unknown fantasy of a biplaned tail. On a metal framework above the body of the plane were affixed four limber metal rotor blades that hung with a flimsy droop when the plane was still.