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Old 05-29-2006, 03:38 AM
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The right elbow is always going to be touching the outside edge of another sphere made by the upper right arm around its center - the right shoulder. Whilst the shoulder may move to change the location of that sphere and relationship of its place in space per shoulder motions, the internal power package relationships cannot change.

So we have a whole construct of spheres now of the power package

The left shoulder - primary lever assembly
The left wrist - secondary lever assembly
The stationary post or point - either head or point between shoulders
The right upper arm - equi-distance either directly from the left (point between shoulders) or at opposite end of a chord from a radius (head).
The right wrist - working in conjunction with the left....

Oh and if your 'kuykendall' you may want to add the left elbow too...lol

If you look at the right arm structure - there is a basic geometry to it - if you draw a line directly from the hand to the right shoulder - the right elbow is always going to be halfway, forming an isosceles triangle on a plane. The obvious statement would be the closer the hand is moved towards the right shoulder the more the right elbow bends....

Last edited by Mathew : 05-29-2006 at 03:48 AM.
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Old 05-29-2006, 01:56 PM
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Mike O Mike O is offline
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Originally Posted by Mathew
The right elbow is always going to be touching the outside edge of another sphere made by the upper right arm around its center - the right shoulder. Whilst the shoulder may move to change the location of that sphere and relationship of its place in space per shoulder motions, the internal power package relationships cannot change.

So we have a whole construct of spheres now of the power package

The left shoulder - primary lever assembly
The left wrist - secondary lever assembly
The stationary post or point - either head or point between shoulders
The right upper arm - equi-distance either directly from the left (point between shoulders) or at opposite end of a chord from a radius (head).
The right wrist - working in conjunction with the left....

Oh and if your 'kuykendall' you may want to add the left elbow too...lol

If you look at the right arm structure - there is a basic geometry to it - if you draw a line directly from the hand to the right shoulder - the right elbow is always going to be halfway, forming an isosceles triangle on a plane. The obvious statement would be the closer the hand is moved towards the right shoulder the more the right elbow bends....
Matthew,
Not sure where your heading with your project or what you want to include- but sounds pretty good- you might want to consider including the sphere of the clavicle motion in your "equation", if you haven't already considered it.
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Old 05-29-2006, 06:57 PM
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Originally Posted by Mike O
Matthew,
Not sure where your heading with your project or what you want to include- but sounds pretty good- you might want to consider including the sphere of the clavicle motion in your "equation", if you haven't already considered it.
What im looking into is things I have to get into my head to produce a sound conception of what is happening geometrically in reference to the inclined plane... its my key to being able to understand this...

I haven't kept the shoulder flexability due to this is complicated enough. My head is buzzing with considerations...lol

Where im headed just now is I am trying to solidify in my head on why the right forearm can or cannot keep its impact fix degree of bend throughout in the stroke in terms of power package geometry. If it is not the case, I want to know what either is my misconception is or work out what is the best way to achieve it...

If the right elbow complying with the right shoulder sphere and left shoulders centers can work together due to the right forearm remaining locked in its impact alignments it will be an internal power package structure issue...

This thread is just an incubation thread...lol
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Old 06-02-2006, 05:00 AM
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The sequenced release....continued

Whilst what I said is strictly true about the left flying wedge not being able to do a pure sequenced releases I have confirmed something.

Look at this graph -



Although not mathematically perfect, this is taken from one of my animation models and the red line is a constant turning(although the rolling will be the same in reverse...)and this is the rate that the wristcock has to work in conjunction to keep the club onplane. Because the acute angle into the plane, the wristcock is allowed to 'almost' release completely - even though its not quite strictly a pure sequenced release - it is close.....
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