Look at the design of the bearings on the mast. Roll right, you hammer them fore and aft. Nose down, you stress them left and right. That's where the gyroscopic forces act.
A barrel roll is more gradual. How fast can you barrel roll? What sets that limit?
You can't beat the system - and gyroscopes are Newtonian objects.
An individual blade isn't a very powerful gyroscope, but the cuff still needs to deal with the orthogonal kick when moving it in pitch. The rotor disk is a more powerful gyroscope: by a factor of the number of blades.
Editted: I think I see - I had in mind a picture where a spinning fan was being swung around and pointed by a seated person, whereas it's aerodynamic forces on the blades that do all the pointing, just gently shepherded by the control movements. There will be a maximum rate at which they can reorient the disk, but it doesn't have anything to do with imposing motion from the hub.
Last edited by awblain; 5th Mar 2014 at 11:21.
Reason: Misunderstanding