here you can see the ever simplest set ups as two motors and two rudder surfaces.. the motors were taken from the center lock actuators of scraped cars, and it is light in nature, but heavily brushed, with a great torque.. those motors are 5 poled ones.. drops about 1200 mAmps at loads.. so ample of running time.. but i kept the ESC as 60 % by adjusting the DR from TX, as balance power used in a reserve situation..
here you can see the set ups.. the main driven gears was taken from same actuator mechanism..and the rudder arms are pivoted together for simultaneous operation.. at beginning my idea was to add the torque link mechanism, but realized as this craft is light.. so used a standard servo, because of the size of the craft, from Futaba, and joined together with twin rudder drives..