Picture of hinge action?

[Yoda]

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.

As a concept to promote Clubface Control and its Mechanics . . .

The Left Shoulder Hinge Pin is theoretical.

The Left Wrist held Vertical to one of the Three Basic Planes is practical.

The two meet as Educated Hands and the Feels of Roll, No Roll and Reverse Roll.

Vive la Mechanics!

Vive la Feel!

Viva la forevermore the translation of the one to the other!

[tim chapman]

As a concept to promote Clubface Control and its Mechanics . . .

The Left Shoulder Hinge Pin is theoretical.

The Left Wrist held Vertical to one of the Three Basic Planes is practical.

The two meet as Educated Hands and the Feels of Roll, No Roll and Reverse Roll.

Vive la Mechanics!

Vive la Feel!

Viva la forevermore the translation of the one to the other!

yes i see now that the roll hinge action cannot be performed by the upper arm - thank you both

i'll work on the educated hands

think i made a little breakthrough with the basic motion after watching the Brian Gay video yesterday, getting the hips in on the deal now

[O.B.Left]

Though the section on Hinge Action and the diagram of the Machine in 1-L depict the Hinge as being located at the swing center, the left shoulder, any of the Three Zones can reproduce Hinging ......and as if it were done at the shoulder.

Billy Casper had a very effective Zone 3, Hands only Vertical Hinge putting stroke for instance. Id venture that most pros today use a Zone 1 (Paw Minor Basic Stroke) Shoulder Stroke with Angled Hinging.

Homer was all about categorization so I guess you could say that any of the Three Zones on their own or any combination there of, could reproduce a Hinge Action.

The Machine of 1-L reveals the basic geometry only. The geometry of a "Hinge Action of an Angular Motion on an Inclined Plane". Homer didnt want us, Humans, to try and swing like his Machine! That is not what the book is about. The Machine can not " swing from the feet" for instance, or shift its weight, or tilt it shoulder axis or or or. But the geometry of the Machine holds, profoundly.

[tim chapman]

yes i see now that the roll hinge action cannot be performed by the upper arm - thank you both

interestingly i found this today....

Horizontal hinging is a biomechanical action where the swinger rotates the back of the left hand leftwards so that the flat left wrist moves around to the left while remaining vertically oriented relative to the ground - in other words, the flat left wrist, which remains vertical to the ground, rotates to the left like a door opening. The AJ Bonar photo gives a swinger the impression that the left wrist rollover occurs at the level of the wrists/hands. However, that is totally incorrect! The roll over action must occur at the level of the left shoulder socket, and the entire left upper arm, left forearm, left wrist and left hand must rotate around to the left as a single unit - at the same rpm as the rotating clubshaft/clubhead. This explanation becomes clearly understandable if you consider the next photo of Anthony Kim's horizontal hinging action.

Image 1 shows Anthony Kim at impact and image 2 shows Anthony Kim at the end of the followthrough (defined as the time point when both arms are fully straight and all the power accumulators have fully released). Note that the clubface has rotated 90 degrees to the left so that the clubface (and back of the left hand) is vertical to the ground. What causes this 90 degree rotation of the back of the left hand and clubface? The answer is clearly discernible in the above photos.

Image 1 shows Anthony Kim at impact. Note that he has a strong left hand grip, which means that his flat left wrist/back of left hand is not quite facing the target at impact. Note that one can clearly see the back of his left forearm and note that the radial border of his left forearm is still facing slightly rightwards. Note what happens to his left forearm during the followthrough - the back of his left forearm rotates counterclockwise (as viewed from above) so that it faces the target at the end of the followthrough and the radial border of the left forearm faces the ball-target line. The left forearm's counterclockwise rotation is not due to any independent left forearm rotatory movements, but it is due to an external rotation of the left humerus (bone of the left upper arm) in the left shoulder socket joint (which has itself moved upwards during the followthrough phase of the swing - thereby making it easier for external rotation of the left humerus to occur naturally). Note that the left upper arm has rotated to the same degree as the left forearm, and that the left forearm has rotated to the same degree as the flat left wrist, and that the flat left wrist has rotated to the same degree as the clubface. That's what happens in a horizontal hinging action - the entire left upper limb rotates as a single unit at the same rpm as the rotating clubface, and the rotation occurs as if there is vertical hinge joint at left shoulder socket level thereby allowing the entire left arm unit to rotate horizontally like a door opening. If a swinger understands this biomechanical phenomenon, and understands that the left hand controls the clubface during the followthrough, then he can control the horizontal hinging action during the followthrough phase of the golf swing.

http://perfectgolfswingreview.net/power.htm

you can see the pics of Kim some 3/4 the way down (big article & quite a good one from what little i know of TGM)

[O.B.Left]

Tim ,if I may, there's no such thing as a perfect golf swing, so Im not sure how it could possibly be reviewed. I'd take those internet golf sites with a grain of salt if I were you, they're full of cooks and nut bars who operate under assumed names. How much credibility should one attach to those who choose to remain anonymous, I ask?

Regards
O.B.Left

[airair]

Tim , there's no such thing as a perfect golf swing. So Im not sure how it could be reviewed. I'd take those internet golf sites with a grain of salt if I were you. They're full of cooks and nut bars who operate under assumed names.

Regards
O.B.Left

This is from Jeff Mann's site. I don't know why he calls it Perfect Swing. He actually started calling it imperfect swing...
In theory I guess you could talk about a perfect swing..just like "The Left Shoulder Hinge Pin is theoretical".
Didn't Hogan say that in a whole round of golf he (only) had 3 perfect shots (of let's say 67 ).

[tim chapman]

Tim ,if I may, there's no such thing as a perfect golf swing, so Im not sure how it could possibly be reviewed. I'd take those internet golf sites with a grain of salt if I were you, they're full of cooks and nut bars who operate under assumed names. How much credibility should one attach to those who choose to remain anonymous, I ask?

Regards
O.B.Left

thanks for the warning OB

as it happens i have been known to wander off down tracks that lead to places you wouldn't want a golf game to go

[O.B.Left]

thanks for the warning OB

as it happens i have been known to wander off down tracks that lead to places you wouldn't want a golf game to go

Thank you Tim. I admire your honesty. Let he who hasnt wandered cast the first scone. (Ancient Scottish saying) It wont be me I can assure you. Ive done more wandering than.... Dion and the Belmonts. But this is where I call home.

[JerryG]

I agree, O.B. This is home for TGMers. I have to admit, though, I appreciate Jeff Mann's tirelss efforts.

[airair]

I agree, O.B. This is home for TGMers. I have to admit, though, I appreciate Jeff Mann's tirelss efforts.

Now he has begun with live web broadcasts
http://www.ustream.tv/recorded/10886488

Maybe that's a good idea for Yoda to try out - answering questions or pointing out something important for the viewers. Or maybe not? J.M hasn't any forum. Just a thought.