Yoda, is it possible that Homer Kelley is referring to the same meaning that Dante describes?
They are the same in that they both describe the late Release as a small pulley wheel and the early Release as a large pulley wheel. But there the similarity ends.
Dante's analogy has to do with the inertia of the wheel and its physical rotation. Kelley's analogy, on the other hand, has nothing to do with either. Instead, the wheel is a proxy for the Release Interval -- the size of the Release Arc through which the Hands pass -- prior to Impact. The smaller the Arc -- the less Clubhead Travel Time permitted during Release -- the greater the Clubhead Speed. For example, halving the Travel Time (Snap Release / small pulley wheel) doubles the Travel Rate (Clubhead Speed). Conversely, doubling the Travel Time (Sweep Release / large pulley wheel) halves the Travel Rate. All this is necessary to comply with the Law of the Flail and the Rhythm (RPM) of the Stroke as the Clubshaft seeks its in-line condition with the Left Arm.
In other words, Kelley's model has to do with the increase (or decrease) in Clubhead Speed with the Handspeed held constant. And that Clubhead Speed is inversely proportional to the diameter of the pulley wheel, i.e., the smaller the pulley wheel (at the end of the Delivery Path of the Hands), the greater the increase in Clubhead Speed during the Hands' encounter with it.
They are the same in that they both describe the late Release as a small pulley wheel and the early Release as a large pulley wheel. But there the similarity ends.
Dante's analogy has to do with the inertia of the wheel and its physical rotation. Kelley's analogy, on the other hand, has nothing to do with either. Instead, the wheel is a proxy for the Release Interval -- the size of the Release Arc through which the Hands pass -- prior to Impact. The smaller the Arc -- the less Clubhead Travel Time permitted during Release -- the greater the Clubhead Speed. For example, halving the Travel Time (Snap Release / small pulley wheel) doubles the Travel Rate (Clubhead Speed). Conversely, doubling the Travel Time (Sweep Release / large pulley wheel) halves the Travel Rate. All this is necessary to comply with the Law of the Flail and the Rhythm (RPM) of the Stroke as the Clubshaft seeks its in-line condition with the Left Arm.
In other words, Kelley's model has to do with the increase (or decrease) in Clubhead Speed with the Handspeed held constant. And that Clubhead Speed is inversely proportional to the diameter of the pulley wheel, i.e., the smaller the pulley wheel (at the end of the Delivery Path of the Hands), the greater the increase in Clubhead Speed during the Hands' encounter with it.
They are the same in that they both describe the late Release as a small pulley wheel and the early Release as a large pulley wheel. But there the similarity ends.
Dante's analogy has to do with the inertia of the wheel and its physical rotation. Kelley's analogy, on the other hand, has nothing to do with either. Instead, the wheel is a proxy for the Release Interval -- the size of the Release Arc through which the Hands pass -- prior to Impact. The smaller the Arc -- the less Clubhead Travel Time permitted during Release -- the greater the Clubhead Speed.
Thanks Yoda, for that explanation.
Originally Posted by Yoda
For example, halving the Travel Time (Snap Release / small pulley wheel) doubles the Travel Rate (Clubhead Speed).
I can understand that there is an increase, but double?
Originally Posted by Yoda
Conversely, doubling the Travel Time (Sweep Release / large pulley wheel) halves the Travel Rate.
Originally Posted by Yoda
All this is necessary to comply with the Law of the Flail and the Rhythm (RPM) of the Stroke as the Clubshaft seeks its in-line condition with the Left Arm.
In other words, Kelley's model has to do with the increase (or decrease) in Clubhead Speed with the Handspeed held constant. And that Clubhead Speed is inversely proportional to the diameter of the pulley wheel, i.e., the smaller the pulley wheel (at the end of the Delivery Path of the Hands), the greater the increase in Clubhead Speed during the Hands' encounter with it.
I can understand that there is an increase, but double?
That's the math, Weightshift. If you've got a hundred-mile trip, you can drive 50 miles per hour for two hours or 100 miles per hour for one hour. But if you decide on the latter, better watch for cops! The same is true when you push your Golf Stroke to its limits. Overacceleration is indeed "the menace that stalks all lag and drag."
In other words, Kelley's model has to do with the increase (or decrease) in Clubhead Speed with the Handspeed held constant. And that Clubhead Speed is inversely proportional to the diameter of the pulley wheel, i.e., the smaller the pulley wheel (at the end of the Delivery Path of the Hands), the greater the increase in Clubhead Speed during the Hands' encounter with it.
Handspeed held constant is an important aspect to keep in mind when reading about this topic in the book. What makes it more confusing though is how Homer talks about Handspeed changing when we change the Accumulator #3 angle, because that also affects the pulley size.
__________________
tongzilla
Last edited by tongzilla : 06-28-2006 at 10:50 PM.
__________________
"In my experience, if you stay with the essentials you WILL build a repeatable swing undoubtedly. If you can master the Imperatives you have a champion" (Vikram).
The reason you can't sustain the lag is because you are so eager to make the club move fast (a reaction to the intent of "hitting it far"). So on a full shot you throw it away too early, which doesn't happen for your short chip. (bts)
Hybrid Mode
