Dual Horizontal Hinging BM#187
 

In Dual Horizontal Hinging, the Left Arm is the second
("dual") hinge. It is "attached" to the primary
Horizontal Hinge (that controls the Clubface alignment) and serves as
an Angled Hinge that lowers the Club vertically onto the Inclined Plane (that
controls the Clubshaft alignment).

The Golfer using Horizontal Hinge Action (a Closing Only Motion of the
Clubface) is almost always also attempting to maintain the Clubshaft on an
Inclined Plane. Therefore, for all practical purposes, the two terms -- Horizontal
and Dual Horizontal -- are interchangeable.


The only exception would be with Putting and Chipping, where at the Player's
option, Horizontal Hinging can be produced while maintaining the
Clubhead directly on the Target Line, i.e., in a Vertical Plane of Motion.
Because such a procedure eliminates the Inclined Plane, there is no need for
a second Hinge to control an Angled Plane of Motion. Hence, Horizontal (Only)
Hinging is the designated Variation, not Dual Horizontal Hinging.

Problems with substituting Swivel for Hinging (over-Roll) BM#194
 

Good points, Matt.





As Matt has stated with regards to Horizontal Hinging, the Toe of the Club
will point along the Plane Line at the end of the Follow-Through (the
Both Arms Straight position). If the Leading Edge of the Clubface is running
parallel to the Plane Line, then the Left Wrist has Swiveled prematurely, and
this puts the Swingle of the Flail out of line with its Handle just as much
as any other form of Throwaway (2-G).

Bye Bye Left Shoulder . . . Hello Flat Left Wrist BM#196
 

Steve,


Once you understand the theoretical concept, it's "Hasta la vista,
baby!" to the Left Shoulder. To control the Clubface, you simply hold
your Flat Left Wrist Vertical to the desired Plane of Motion through Impact.
And you do that by Feeling Roll, No Roll or Reverse Roll.

Swivel = Independent rotation of the Wrist and Forearm BM#201
 

As I've stated repeatedly in numerous posts, there is no true Rotation (of
the Left Wrist, Arm or anything else) in the Hinge Action. The Flat Left
Wrist -- and you can throw in the rest of the Arm if you want to -- remains
Vertical to the selected Plane of Motion. Only in the Swivel is there
a true, independent Rotation of the Wrist and Forearm.

Hinging has no relation to the spine BM#202
 

The pin is perpendicular to the horizontal plane, e.g., the Ground. The Hinge
Action concept is totally independent of Spine Angle.

No Relationship between Hinging and the spine BM#205
 

Again, the perpendicular positioning of the Hinge Pin to one of the three
Basic Planes of Motion is completely independent of any spine angle or body
posture. If, as you suggest, the model bends over more, the Pin doesn't
'bend' with her. It remains perpendicular to the horizontal plane. If it
helps, you might want to pretend like she had an operation and had her old
posture Hinge Pin removed and reinserted into the new. :oops:

Limitations to Vertical Hinging BM#206
 

Due to its Power limitations, Vertical Hinging is best used only in the Short
Shots.


Homer Kelley was no fan of Vertical Hinging. He thought it was important to
learn in order to be able to differentiate the three Hinge Actions, but on
the Golf Course, he strongly preferred Angled Hinging. The reason was that,
on the steep Plane of the shorter Shots, Angled Hinging approaches the
Layback Only characteristic of Vertical Hinging. However, it does so without
the deliberate mechanical manipulation -- the 'Reverse Roll' Feel -- that is
always required for Vertical Hinging.

Horizontal Hinge Action in Putting? CE#2
 

Consistency with Horizontal Hinge? CE#3
 

Hinge Motion Versus Hinge Action
 

Hinge Motion refers to the posssible Clubface Motions through Impact -- Close and Layback (or their simultaneous combination).

Hinge Action refers to the Flat Left Wrist producing that Motion by remaining Vertical to one of the three Basic Planes, i.e., Horizontal, Vertical or Angled.

Indeed, Clubface Hinge Motion duplicates Left Wrist Hinge Action. And vice versa.

But always...

Action is cause.

Motion is result.

This distinction is also important when considering the differing Rhythm of the three Hinge Actions, i.e., the In-Line motion of the #3 Accumulator (Left Arm and Club) and the resultant Clubhead Travel distance to the end of the Both-Arms-Straight Follow-Through.