Bob, damn it i tried to stay the hell out of this one but i got to back up Mr61.
Bob i used to fly an ultra hTL Air Comand, normally they have a 60" prop, but i put a 68" on it, and to do that i raised the motor, but the rest of the frame was the same, OK, now as most people would know that if you spun the blades and an AC with the stick back sitting on the tail wheel, they would dig in the ground and probably take the tail off, YET and are you reading this YET i was able to countless times land with the nose pointing to the sky and not touch the ground, Bob your good value but you dont understand **** about gyros, give your frien and mine Sonny J a ring and ask him if i know what im talking about, it is one THINK to know you know some thing but it is a completly different thing to KNOW you know nothing.