[Mathew]

If you look at the hinge assembly as two planes working in conjunction inside a sphere - the right forearm will move directly aft or 'behind the door' of the primary hinge and the angle of the right forearm will remain constant into the point of the sphere on the secondary hinges vertical circle lifts upwards...

The turning or rolling of any singular part (clubshaft(or more ideally longitudinal center of gravity) or forearm) of the right flying wedge will produce a cone shape motion if rotated due to it being locked in impact fix degree of bend. The more bend - the bigger the cone. However if you increase the bend to 90 degrees it will produce a circular shape.