Yeeha! What Tom didn't show you was that even after the excitement of the loop he actually took the controls and controlled the glider in level flight himself. He's a true sport and a pleasure to fly with. Thanks again, Tom, I'm glad you went for the loop in the end :),(reply>), @Allan RichardsonThere are two sets of physically linked controls in a glider; when one guy moves the control stick, the stick infront of the other guy moves too.,(reply>), Thats something amazing.,(reply>), Pilots of the Air France plane that crashed in 2009 probably felt this effect,(reply>), Dragonpeak Studio Thanks for the explanation. I should know that because I have some (but not enough) experience in airplanes.  In the late sixties I was given a demo ride in the back seat of a T-33 (unarmed subsonic jet fighter), and although a knew there were back seat controls, I didn’t dare touch them.,(reply>), Normally in two seated gliders there are controls on both seats, which are linked so if the person in one seat moves the control stick the one at the other seat moves with it.