BIK_116.80
Mustafagander has it right on the money. Q bellows provided artificial feel and yes, the rudder was connected by bellcranks and cables as well. Once rigged correctly, it gave little trouble. If however, the rudder boost was switched OFF during a three engine go-around, the aircraft required LOTS of airspeed. Vmca (boost ON)= 120 knots, boost OFF= 180 knots. The rudder boost was switched OFF on just such a maneuver during a TWA training flight years ago by an FAA inspector in the obs seat and the aircraft rolled over on its back and crashed, killing everyone. After the investigation, the FAA bought TWA a brand NEW 707. The 707 also had a system for aileron assist using aerodynamic balance panels. Wonderful old bird, it was a delight to fly, especially the later -320B advanced models.