Part 6C of the TGM translations will only go over Section 2-G.
2-G (Hinge Motion)
Clubface alignment control will control the direction of ball flight. Clubface alignment control is very much dictated by the Hinge Motion in the swing. There are 3 types of hinge motions:
Now, hinge motion is different from clubface motion. Hinge motion is an actual motion the arms, wrists and hands make as they motion from one position to another. They will often be referred to as:
Horizontal Hinge = Full Roll
Angled Hinge = No Roll
Vertical Hinge = Reverse Roll
Homer states that while there are 3 hinge motions, there are only 2 clubface motions, and they are 'Close' and 'Layback.' What he's trying to say is that in only 2 of the HINGE motions does the clubface change direction/angle...and those are the Horizontal Hinge (closed face) and Vertical Hinge (layback).
To understand the hinge action in the swing, IF THE CLUBFACE IS SQUARE AT IMPACT, after impact the face can point in the following directions:
Horizontal Hinge = The toe of the clubhead will be pointing at the target.
Vertical Hinge = The clubface will be pointing up at the sky.
Angled Hinge = In between Horizontal and Vertical. The face will be about 45* closed.
This pic of Tom Tomasello shows the hinge motions. There's a white mark on the clubface showing where the clubface is pointing. In these pics it goes:
1 = Angled
2 = Horizontal
3 = Vertical
The Horizontal Hinge calls for a 'full roll of the clubface', but Homer Kelley states that the hands actually do NOT roll. He also states there will not be a change in grip, grip type, impact fix or anything else. Very important to understand for now, but the real benefit of understanding this is figuring out if you should use a horizontal hinge and if so, then how do you execute it.
After the hinge action has been executed, THEN the golfer can execute the 'swivel' and make sure that the swivel is 'on plane.' Here are some Lynn Blake videos on the subject.
Homer suggests a drill where you 'zero out' the pivot. All 'zeroing out' the pivot is to point the toes inward (aka pigeon toe) so the hips cannot pivot. Homer then suggests that you learn to operate each hinge action with the 'zero pivot'. First doing it without a club, then with just the left hand, then with both hands. He feels that learning how to execute each hinge is good because once you understand the difference in feel between each hinge motion, then you can properly execute each hinge motion. For the horizontal hinge action, I believe you are better off squaring the clubface in the takeaway with the left arm/left hand. By squaring the clubface, I mean that you should get the toe of the club pointing straight up in the air. Then you should 'pull' with the left side on the way down and that should allow you to almost automatically execute the horizontal hinge action. Believe it or not, I usually execute all 3 hinge motions in my practice range sessions so I can get the feel and I think Homer was dead on with it helping the golfer.
Homer then gets into rhythm, but I feel that this Lynn Blake video does a fantastic job of translating what rhythm really is: