This is a prototype I've made of cyclic helicopter pitch/roll control in Garry's mod.
The bottom green plate is creating the rotation with the motor tool. it's adv ball socketed to the top green one which is axisd to the cyclic plate which is moved by hydraulics, if that makes sense.
The issues i have are getting this to be efficient at high speed and weight. right now everything is very low on weight so that the hydraulics can keep up.