I was just thinking about something similar today, while hitting (or is that swinging, or right arm swinging!!!) some pitch shots, working on my Tomasello motion. In my view the Tomasello motion certainly has right forearm thrust through the ball, but also tends more naturally towards a horizontal hinge. What I was thinking about was this (and it could well be wrong!):
With centrifugal force in swinging, the force is working out, perpendicular to the plane line when viewed from above, away from the centre (left shoulder). Such a force tends towards horizontal hinging.
With hitting and right arm thrust, force tends down the angle of approach, or viewed from above, across the plane line but not at a 90 degree angle.
With the Tomasello motion (Australia video) - the arms go down and then Tom exhorts one to hit 'OUT at the ball'!!! My feel with this move is not the angled (to the plane line from above) force of hitting, but truly out at 90 degrees (or close to it). This gives me a horizontal hinge, or an angled hinge which is close to a horizontal hinge.
Anyway, here's my thesis: force at 90 degrees to the plane line (viewed from above) 'naturally' gives a horizontal hinge, whether by centrifugal force, or right forearm thrust; force parallel to the plane line 'naturally' gives a vertical hinge; between these two gives varieties of angled hinge, tending more towards horizontal or vertical depending on how cross or along the line the force is.
By the way, in thinking of the force vector, I think it is best to think of it in relation to the left shoulder if that makes sense.
Hybrid Mode
