'Tiz The Way We Learn
 

And your courage to post was rewarded with another step forward in your quest to truly 'own' the treasure that is TGM. Congratulations, Col. Bucket. Keep this up and you'll soon be Gen. Bucket!

Thank you Yoda! Just one more...(not!)
 

Thanks Yoda for your help over the last few days. I really appreciate your clarity and persistence in answering my questions.

Now I understand that the 10-5-E used by the Hitter (as a proxy to the Angle of Approach) is not a true Geometric Plane Line. Whenever I see the words Plane Line, I think trace!. Now, I think differently -- I only trace the true Geometric Plane Line (the 'Basic Basic').

One more question. You say that 1-L-6 (this refers to the True Geometric Plane Line, not 10-5-E, yes?) is satisfied as long as the Clubhead covers the Angle of Approach. But since this covering occurs after Low Point also (because we cover the extensions of the Angle of Approach also), wouldn't that take the Clubhead above plane (once again, we are talking about the Basic Basic Plane, right?) hence violating 1-L-6?

P A R A L L E L
 

Collards,

Annikan Skywalker and I were discussing the Geometry, Visual Equivalence, and Practical Applications of this thread. I was making the point that well the Proxy Plane Line is just a theoretical thing. How could you apply it practically without just saying Cross Line is just "Out to Right Field?"

Skywalker made a good point on the Practical Application of this discussion that I think my simplify things a bit . . .

7-3 Magic of the Right Forearm truly is MAGIC in this case.

The On Plane Right Forearm shows the precise up-and-down direction it and the Clubshaft must take throughout the Stroke (2-J-3). The “Angle of Approach” position of the Right Forearm shows the precise Cross-Line direction the Forearm must take through Impact. It, thereby, precisely locates the visual Impact Point – where the eye must direct the Pressure Point #3 – the inside-aft quadrant of the Ball.

If we go to Fix properly with our Right Forearm On-Plane, we can SEE the Right Forearm Angle of Approach per 7-3. NOW for the good part . . . Since the Right Forearm Angle of Approach is PARALLEL to the STRAIGHT LINE DELIVERY PATH we can get a feeling of these lines in 3 D. BUT per 2-N-0. . .

The Angle of Approach Line, the Delivery Paths (10-23), the Plane Lines (2-F), and their Visual Equivalents (2-J-3) are all inscribed on the face of the Inclined Plane, but appear to the player as if inscribed on a horizontal surface – that is, ON THE GROUND. This is an optical illusion that, when understood and utilized (2-P, 2-J-3).

Would it not follow that if we mentally construct a line PARALLEL to our On Plane Right Forearm at Fix from the Inside Quadrant of the ball that we have just defined going forward, we can define the Angle of Approach "as if inscribed . . .ON THE GROUND?" So is the Angle of Approach not a line parallel to the Right Forearm Angle of Approach?

Thanks!

B

Arm Yourself
 

I started a post yesterday on exactly this, but chickened out and went back to the book. Nice to see Skywalker confirming this. So mustering up some courage, I would say YES to your question. The right forearm can represent the Hitters Angle of Approach, as inscribed on the ground, which will be covered during the procedure.

If I may be even bolder, the right forearm angle shows you the following:
The visual Angle of Approach of the clubhead to the inside-aft quadrant of the ball
The Delivery path of the hands
The Swing plane and top location of the hands

In terms of the statement The On Plane Right Forearm shows the precise up-and-down direction it and the Clubshaft must take throughout the Stroke (2-J-3). Make sure the clubshaft is set up on the plane you want to use at impact fix, e.g. The Turned Shoulder Plane. We have a video of Ben showing the planes at address.

Here comes that big green hand to either slap me on the head or pat me on the back.
I never know...duck Bagger!

Reconciling Angle Of Approach Differentiations
 

1. With the On Line procedure (Arc of Approach), you Trace the true Geometric Plane Line (Basic Delivery Line) with the Sweetspot. With the Cross Line procedure (Angle of Approach), you Cover the Angle of Approach with the Sweetspot. With both procedures, you Trace the selected Line with the Right Forearm and #3 Pressure Point.

2.Yes, 1-L #6 (the On Plane Clubshaft) refers to the Geometric Plane Line. And yes, when using the Angle of Approach procedure, the linear nature of the Hitter's Right Triceps Thrust through Impact drives the Club above this Geometric Plane Line, i.e., into 'right field'. This 'off Geometric Plane' Drive-Out does, in fact, violate the true On Plane Clubshaft requirement of 1-L #6.

However, as long as (1) the Clubhead passes through the same two points (Impact Point and Low Point) located respectively on the Geometric and Low Point Plane Lines and (2) both the Clubshaft and Lag Pressure Point (as directed and supported by the Right Forearm) are correctly aligned (as established at Impact Fix) to this alternate Delivery Line (the Angle of Approach), then the geometrical equivalent of the On Plane Clubshaft has been achieved (2-N-0). And that is all that is required.

Relevant portion of 2-N-0:

The “Delivery Line” procedure completely replaces the geometric Plane Line (2-F) and the Target Line because these were established at Impact Fix (7-8 ) according to the intended Hinge Action (2-J-1) and Stance Line (10-5) requirements, and their control is completely automatic. Both the Lag Pressure Point and the Clubshaft must so relate to the selected Plane Line OR Angle of Approach – to the geometric or the visual – but don’t try to Monitor both at the same time because, though equally dependable, they need not be identical in execution AS LONG AS THE CLUBSHAFT HOLDS A STRAIGHT LINE RELATIONSHIP TO A STRAIGHT LINE – POINTING AT A STRAIGHT LINE.

For visual reference turn the book UPSIDE DOWN and look at pictures 2-C-1 #2B and 2-C-1 #2B. 2-C-1 #2B upside down is the "optical illusion - ON THE GROUND." All that is omitted from 2-C-1 #2B is the Impact Plane Line and the Low Point Plane Line.

Moving on...
 

Thanks Yoda, 12 piece and others for taking part in this discussion. I think the mess I started is more or less cleared up now.

Lets talk about the second point I made that started this thread:

• 7-1, last sentence:
  "The prestressed (bent) Clubshaft (10-19-A) and maximum Swing Radius (10-19-C) are resistances to Impact Decelerations that each must establish before – not during – Impact (2-M-1)."
  
  What bugs me are the terms in parenthesis. Why is the prestressed Clubshaft associated only with Drive Loading (10-19-A), and max Swing Radius associated only to Drag Loading (10-19-C). I thought Swingers should also go into Impact with a prestressed Clubshaft, no? Likewise, Hitters should have max Swing Radius too, no?

I'll guess at it . . .

The heading for 7-1 is GRIPS-BASIC. The sentence that you are questioning is in a paragraph basically talking about "tightness of grip" and required "passive" right elbow for the Swinger and "active" Right Tricepts of the Hitter.

So Swingers are totally dependent on their skill at manipulating Centrifugal Force while Hitters are not.

Pivot Thrust alone (2-K), forfeits Right Arm Thrust (6-B-1).

I would say that since the Swinger forfeits Right Arm Thrust his mainline defence against further Deceleration is Max Swing Radius (Full Lever Extension). Allowing CF to SLING the Clubhead FULLY DOWN PLANE and to FULLY UNCOCK #2. On the other hand, the Hitter is trying to over-ride CF. Properly manipulated, Clubhead Inertia can withstand all the Lag Pressure anyone can generate So his MAIN DEFENSE against deceleration is Right Ticept PUSH against the Clubhead Inertia. Power Package Muscle Power can be almost entirely Right Triceps

Just a guess . . .

It is the difference between longitudinal and radial forces (at the limits of each).

If something is fully longitudinally stressed, it can not be bent. Likewise, if something is radially stressed, it can not be straight because 'any' amount of radial force creates a 'bend', technically speaking.

Does this mean then that a 'pure' swing, pure longitudinal acceleration, would mean no PP#3 feel/lag pressure at follow through? Where a hitter would always be 'bending the string', and a swinger would 'snap it straight, at both arms straight' and have no radial force (lag pressure) at all at that point? The point at which you would feel your "arms coming out of their sockets" to quote Ben (or something along those lines). Miller talks about this feel too.

"The Clubshaft is stressed by the weight of the Clubhead resisting a change in its direction or velocity – which is Acceleration. Acceleration bends the Clubshaft during Radial Acceleration (10-19-A).

Change of direction bends it during Longitudinal Acceleration (10-19-C) which may be, or just include, the Clubhead Lag Pressure Point in addition to its main function of Acceleration Control."

What does that last sentence mean?