RE: Gyrodynamics
Hi Hal
Item 2 on your list is obviated by using an offset gimbal. I have experimented with various amounts of offset and generally speaking It enables me to use very standard servos that are never overloaded. On a particularly windy day just holding the pitch linkage in my hand I discivered once that the offset was sufficient enough to make the pitch tend to want to move in a forward direction !! This was on a 42" diameter rotor but the size is irrelevant.
Offset gimbals are used on full size and it is this that allows the more thinly muscled pilot to move the pitch of the rotor fore and aft with little or no stick forces.
Cheerio
Sean