Picture of hinge action?
 

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.

Can someone draw me a picture of the statement above? The part that I am confused about is when it says vertical to the plane.Is there a different meaning to vertical than up and down?

Jerry . . . Vertical in this context means 90 degrees . . .

So horizontal hinging would be holding your left wrist vertical to the ground while you move your arm back and forth like a door to your house or a helicopter

vertical hinging would be holding your wrist vertical (90 degrees) to a vertical plane . . . your arm would move like an attic door . . .

angled hinging would be holding your wrist vertical to the inclined plane . . . like a paddle or one of them bomb shelter doors.

So the hinge pin . . .which is in your shoulder is mounted VERTICAL . . 90 degrees . . . to the plane of motion . . . but with vertical and horizontal hinges you have to have ANOTHER HINGE to lay the motion ON THE INCLINED PLANE . . that's why you have DUAL HORIZONTAL AND DUAL VERTICAL . . . dual representing two hinges . . . one hinge perpendicular to the associated plane (horizontal plane or vertical plane) and the other hinge to lay the blade of the hinge (left arm) on the INCLINED PLANE . . . See the pictures 10-10-C thru E . . . you'll see what I'm talking about . . . you DON'T need the second hinge to lay it on the plane with angled so you don't have "dual" angle . . .no need for the second hinge because the motion is already on the inclined plane.

Hinging is actually with the WHOLE ARM . . that is the full blade of the hinge . . .Homer just focused on the wrist because it could be verified in terms of what it was vertical (90 degrees) to . . . (ground, wall, inclined plane) . . . you'll note in the 10-10-C thru E pics the two theoretical hinges in the left shoulder . . . one is like a door hinge the other is like a lose nut and bolt that allows the blade of the hinge (left arm) to be laid on the plane.

but to answer your question . . . vertical is vertical to the ground with horizontal . . but 90 degrees to a wall with vertical hinging and 90 degrees to the golf plane (roof) with angled hinging . . .

Holla.

Hinge Action Basics
 

Great job, Bucket.

Three Hinge Actions explained in one post.

:shock:

Hinge Action . . .

A monumental concept -- Clubface Control -- that will change (and challenge) the golfing lives of all who understand it.

I've done my best to explain it in dozens of posts -- plus videos -- since 2004.

Our efforts are cumulative.

Which blow fells the oak?

Who cares?

:salut:

Nice one Bucket. The word "Perpendicular" works nicely too.

I agree Jerry , pictures are best when it comes to describing geometry. Words often make matters seem more obtuse. Imagine studying high school geometry but in words only, no diagrams. If I could ask Yoda for one thing this christmas it would be for more diagrams.

Take for instance 1-L-21:

That would be a nice wiki post for guys to add geometric figures to. Even if its pencil sketches.

Homer gave us a few diagrams, but I do wish he'd given us more. Even the geometry of the circle was not illustrated in the book. By the way, there's one right there....... the geometry of the circle , in 2D can lay flat against the Inclined Plane. Somebody could draw that easily. How 'bout the law of the triangle? Or how the bending right elbow cocks the left wrist or Single Horizontal as a non planar, cone shaped motion or or ....

Perhaps Homer thought it was all obvious?

My next question was going to be, can I substitute perpendicular for vertical?

thanks everybody- I am not giving up on this hinge concept.

It Ain't Necessarily So
 

No problem, Jerry.

In fact, when I choose to discuss these things with students . . .

I use the term perpendicular (relationship of the Flat Left Wrist to one of the Three Associated Planes) all the time. But, only after I've used the term Vertical, and then only because students relate more easily to perpendicular than to vertical. And then I explain the difference.

Now, why all the bother?

Assuming an intelligent golfer who wants to know -- indeed needs to know -- the answer is simple . . .

In the constructive vocabularly of The Golfing Machine, the term Perpendicular relates to the Wrists' overall up-and-down plane of Motion (Level, Cocked and Uncocked). The term Vertical relates to the mid-condition of the side-to-side Rotational Motion (Vertical, Turned and Rolled).

Then, answering your question here, when we relate the Left Wrist to a given Plane of Motion -- Horizontal, Vertical or Angled -- we can do so in its Rotational frame of reference. Namely, Vertical, i.e., neither Turned nor Rolled.

Hence, Vertical to the Ground (a Horizontal Plane) describes the mid-condition of a Rotational Motion, not Level, the mid-condition of a Perpendicular Motion.

Screwy stuff, I know. But when you're a teacher helping your student get results . . .

Precision matters.

The Wrists have Three Planes of Motion (Horizontal, Perpendicuar and Rotational). Within these are three sets of three -- Flat, Bent and Arched; Level, Cocked and Uncocked; Vertical, Turned and Rolled -- with the first term indicating the mid-condition within each Plane.

Most of the time, except as he needs to on this particular day, the student never knows.

But, the teacher knows.

And, so does the Ball.

That's a good thing!

:salut:

How 'bout this translation?

Vertical hinge: No roll
Angled hinge: Half roll
Horizontal hinge: Full roll (90*)

- on the inclined plane.

Does the body pivot cause this full roll or is it the forearms?

it is how you set the hinge in the shoulder that rotates the whole left arm

nb 'new boy on the scene' the quality of this answer is highly questionable :-)

I'm not qualified to comment on this. But I have difficulties seeing how the LEFT shoulder can do this alone. Most of the rotation happens in the two bones in the left forearm, affecting the left wrist I would think...but I think it is best if someone else could set the record straight.