Walt:

The differential rudder travel reflects the inside rudder, just like the inside wheel, traveling in a smaller circle than the outer. But even more is similar to differential aileron travel - the inside rudder, with more deflection, has greater air drag and increases the effect on the yaw of the airplane. Many flying wing designs with twin rudders do not deflect the rudder at all toward the center of the plane, all deflection is to the outside. Right. The right rudder only is deflected for a right yaw, and vice versa.

Bill.