Another cool way to look at hinge action is via spherical circles.

Imagine that globe I described on the left shoulder. For the left arm to be lifted (circle 1). The positioning of the second circle (circle 2) however is dependant on the clubface motion you desire through impact - horizontal hinge action produces a circle horizontal to the ground - vertical will be vertical - angled will be angled ...etc but all referenced to the ground.

Homer used hinges as an alternative way to more easily communicate these ideas.

I believe that these circles or axis are positioned globally around the left shoulder rather than locally with so that these circles don't chance in regards to what the moving left shoulder does during the stroke....

There is something im missing though with regards to the orientation of the pin relative to the ground and/or inclined plane...just got a feeling about it.... With 1-L and its angled and vertical equivalents, the pin is flat against a plane that goes 90 degrees through the ground and inclined plane. What im wondering is what would happen if you changed this....

For a pure sequenced release a double wrist cock must be used.

I want to talk about the plane and the corresponding left arm alignments also. For every out of line alignment whether it be wristcock, wristbend, turning the hand towards the plane and the secondary hinge, it is actually impossible to overdo them on the backstroke provided they stay to the plane and its baseline which is ultimately under the control of the right forearm and pp3. If you were wishing to use a double wristcock in order to align the vertical wristcock motion to the plane - its adherance to the plane would mean that again you can not overdo it. Now when coming down the wrist can cock towards the line completely sequenced, and then since the wristroll and wristbend is two motions working co-ordinately, turning the hand back to vertical will automatically then bring it back to its 'flat' and vertical condition per impact fix...

That is how a 'pure swinging' sequenced release works....

I believe though that Homer knew this as it is hinted in 10-18-B double wristcock- "It is restricted to true centrifugal force Swings".

Ok so what about swinging with a strict left flying wedge. The lever assembly can still be accelerated via pp4 - the pivot to throw the wristcock which will automatically start the wristroll coordinately and still be by definition a swinger - using the rope handle technique.... The wristroll whilst totally co-ordinate works 'I believe' progressively 'faster' towards the end of the wrist uncock than at the beginning but yet it is still a full overlap of #2 and #3. I need to make up a graph at some point to prove this....

spheres
 

You know that you could bypass the complicated assessments of sequenced releases by becoming a Hitter. :eyes: :BangHead: We've got it so easy. I'm a simpleton; therefore, I'm a hitter.

Like you, I am a huge fan of 1-L. I think if instructors truly took the time to immerse themselves in the study of the 21 basic concepts, they'd be better teachers. Though, there are some logical limitations in the drawing.

In three-dimensional Euclidean geometry, a sphere is the set of points in R3 which are at distance r from a fixed point of that space, where r is a positive real number called the radius of the sphere. The fixed point is called the center or centre, and is not part of the sphere itself.

Since humans have to hit the ball, we have a center working around a center. The left shoulder and it's distance away from our Stationary Post make the fixed point no longer fixed. Hence, a spherical shape cannot truly exist. But, as Homer said about golf, "demanding that golf instruction be kept simple does not make it simple - only incomplete and ineffective." This applies to three dimensional geometry as well.

We can both agree in the spherical geometry, if we see the left shoulder as the "fixed" center. But, we must also see the center's movement in three dimensional space. With this in mind, we can't even get an oblate spheroid, similar to the Earth's shape, because even this has a fixed center.

I appreciate your drive to understand more about this subject. Even more than that, I appreciate your drawings. They are priceless.

Mathew,

I applied both methods today and I think both are a true swinging motions. I used a Strong Single Action Grip for both procedures.

The first, which aligns the Clubshaft to both the Left Arm Wedge and simultaneously to the Inclined Plane by Bending the Left Wrist does have good #3 lag pressure and quite easily traces a straight plane line. There seemed to be a lot of overlap of the #2 & #3 release. Also, the #3 pressure point did not return to the aft side of the shaft for me.

The second method using a Flat Left Wrist and Cocking on the plane of the Left Arm Flying Wedge has more spacing (less overlap) of #2 and #3 roll and the #3 pressure point returns nicely to the aft side of the shaft before impact for a very solid wallop. I prefer this way.

Ted,

You're a Great Hitter and a Great Golfer. :occasion: The only thing simple about you, is adding your scores: 3,4,3,3,4,4,4,3,3,3,4,3,3,4,4,2,3,4. :)

Hey Ted :)

Your right, the left shoulder does moves around in its own orbit but that is moved by basically yet another another sphere with the point between the shoulders, or the stationary head as its center. My spheres analogy is basically the usage of a center point and the circles of rotation that influence it. This is exactly what Homer used, but in a slightly different way - for him it was hinge pins and swivels which influence a center point to demonstrate the same axis of rotation. For example the end point of the radius of the left arm (hand) if not restricted by anatomy or anything else could touch anywhere inside a sphere with the left shoulder as its center.

With 1-L the hinge pin is fixed to a stationary post per my 1-L and 2-K equivalent animation, however in real golf with the shoulder motions, the axis of rotation or 'the circles' of that sphere stay exactly as they where whilst being moved with the orbit of the left shoulder around the head as its stationary point which is ultimately controlled with the right shoulder. So basically the 'left shoulder is moved in the sphere' around the head (which is a moving chord from a radius inside the sphere if the head is taken as the center rather being a purely a diameter when the point between the shoulders is used) but the orientation and the circles of the sphere doesn't get influenced by its own local movement....the vertical plane dictated by the hinge action doesn't not change regardless of the shoulder moving....

All about centered arc :). I know we're for sure we're not in disagreement though - just its me not explaining myself enough...lol

Ps wait until you see the new animation when I finish it, its going be wonderful :).

The strict left flying wedge on an ideal mechanics is a superior procedure - like homer said about the double wrist cock - it requires a reverse roll. There is a complete overlap of 2 and 3, however you are still swinging and the pivots acceleration is still spinning the flywheel.... its still swinging :)

Let me clarify. I felt that with the first procedure, #2 &#3 felt simultaneous un-cock and roll. With the second procedure, there is a definite un-cocking motion-then-roll. This is what I meant by separation. There is overlap.

Can you verify my feeling that the #3 pressure point returns to the aft side of the Clubshaft during the Roll of #3 accumulator using the second procedure?

Chances are, Im the only person in the world to have animated this. So trust me...lol - with a strict left flying wedge - it is complete overlap.. I tried like nothing else to do a sequenced release with the left arm working as a golfers flail, however no matter how I tried it just didn't happen - and then looked harder at it and found that no matter what I did they were completely coordinate and ive already explained this in depth. With a double wristcock you can then align the vertical wristcock motion onplane and makes it possible to have no overlap....

At impact and through the impact interval where your preforming a hinge action, pressure point 3 will be aft of vertical like it was at impact fix - before your release motions back to vertical for impact, pp3 will be rotated a quarter turn with the loading on the first knuckle for swinging...

Also the intention of uncocking the left wrist whilst the right forearm and pp3 keeps the club on plane will automatically produce the wristroll back to vertical...

I can't wait
 

I'll be excited to see the finished product. I'm sure it will be as good as a 330 yard drive to an island green. ;)