Originally Posted by
W.u.W
Am with chop on this one instead of looking down on him with your expert opinions would someone please kindly explain how that control shaft was still connected to the actuator when It was disconnected from the lever mechanism I can only see two fixing points on that shaft top and bottom?????
The servo acts on the control rod, visualise that as fixed. The feedback arm creates an angle between the control rod end position and the input control position. This acts on the servo control. The servo moves until the geometry reaches the "neutral" again. With the control rod end not fixed, the geometry is not fixed and so there is no shutoff.