[Daryl]

Vertical Hinging requires a "Reverse" of the #3 Accumulator Roll. This Clockwise rotation is opposite of the Counterclockwise Roll that produce Angled and Horizontal Hinging. In other words, the Right Elbow would move faster than the Hands, which isn't going to happen, so "Action and Motion" must be produced by a "Reverse Swivel Roll" of the Hands. The Hands are Clamps, and therefore any disturbing motion is manipulation. Can we develop a "perfect Vertical Hinge" with a 3 dimensional Impact? Probably not, but we can come very close.