multipile centres momentum transfer
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tongzilla
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Simply put, momentum is mass in motion.
It's possible to generate an enormous amount of speed by taking advantage of the fact that speeds can add up!. This phenomenon is known as Accumulation of Momentum.
Think of this simple example. Imagine the following in your head.
From a standing position, you throw a ball forward at 10 mph.
Now picture yourself riding a bike at 5 mph and throwing the ball at 10 mph.
How fast is that ball traveling now?
Answer: 15 mph (5 mph + 10 mph)
Now picture yourself riding the bike at 5 mph while on a flatbed truck going 15 mph, and throwing the ball at the speed of 10 mph.
How fast is the ball traveling now?
Answer: 30 mph
This example doesn't account for wind resistance, etc., but you get the point. No one would ride a bike on top of a moving truck, but it illustrates the fact that you can add one speed to another as long as you are moving along a moving platform.
An enormous amount of speed is accumulated when you involve several moving platforms adding speed to one another.
Let's look at a more realistic and relevant example: Vertical Jump. When you try to achieve a high vertical jump, you can break down the jump into 5 basic movements:
1) Arms Swing Upward
PLUS (+)
2) Head and Back Straightens
PLUS (+)
3) Hips Thrust Forward
PLUS (+)
4) Legs Straighten and Push
PLUS (+)
5) Calves Flick the Feet Downward
EQUALS (=) Vertical Speed of Centre of Gravity
This is a prime example of Accumulation of Momentum through Sequential Joint Movements. Sequential means not all at once, but rather one right after another. Each successive movement begins while riding along on the moving platform of the previous body part.
The most important thing is that the movements happen in sequence, one right after another.
Each movement lags slightly behind the previous movement in the chain. Each movement begins while riding along on the moving platform of the previous body part movement.
If the movements happen parallel, that is, all at once, the overall speed is dramatically reduced:
1) Arms Swing Upward
at the same time that...
2)Head and Back Straightens
at the same time that...[/i]
3) Hips Thrust Forward
at the same time that...[/i]
4) Legs Straighten and Push
at the same time that...
5) Calves Flick the Feet Downward
this results in only one speed</u> contributing to the Vertical Speed of Centre of Gravity
How does all this relate to my Golf Stroke?
Hopefully by now, after all I've written, you can construct a well-reasoned answer yourself.
Just like in the jumping example, your goal is to accumulate maximum momentum through sequential joint movements. The difference is, in jumping, momentum starts at the arms and ripples down through the body and ends at the feet.
It's the same idea in golf, except the sequence of movements are reversed. During the start of the Downstroke, Momentum starts from the Feet and works its way up the body to the Knees, Hips, Shoulders, Elbows, Wrists and into the Golf Club. This sequences of movements is known as the Pivot Gear Train.
By ommiting any part of this system (e.g. the feet), you are significantly reducing your ability to Transfer Momentum into the Clubhead, and ultimately, into the Ball.
Now, very few Golfers actually completely omit parts of their Gear Train. How many golfers have you seen who doesn't use their Feet at all? Or their Hips? Not many. They're using their Feet, Knees, Hips, etc., but since they can't even get beyond the Lady's Tee, they can't be Transferring Momentum optimally. So what's going on?
They are trying to initiate these movements together or all at once, or parallel to each other, and just like in my jumping example, the speeds don't add up and Momentum doesn't get transferred along the joints. None of their individual body part speeds have added to one another, therefore no Accumulation of Momentum has occurred. The individual speeds are not adding to one another, therefore, overall speed has been dramatically reduced.
Remember, you want sequential, not parallel movements.
It's important that you don't try and force this. Let it just happen. Just let it flow naturally.
But how?
My fingers are getting tiered...
It's possible to generate an enormous amount of speed by taking advantage of the fact that speeds can add up!. This phenomenon is known as Accumulation of Momentum.
Think of this simple example. Imagine the following in your head.
From a standing position, you throw a ball forward at 10 mph.
Now picture yourself riding a bike at 5 mph and throwing the ball at 10 mph.
How fast is that ball traveling now?
Answer: 15 mph (5 mph + 10 mph)
Now picture yourself riding the bike at 5 mph while on a flatbed truck going 15 mph, and throwing the ball at the speed of 10 mph.
How fast is the ball traveling now?
Answer: 30 mph
This example doesn't account for wind resistance, etc., but you get the point. No one would ride a bike on top of a moving truck, but it illustrates the fact that you can add one speed to another as long as you are moving along a moving platform.
An enormous amount of speed is accumulated when you involve several moving platforms adding speed to one another.
Let's look at a more realistic and relevant example: Vertical Jump. When you try to achieve a high vertical jump, you can break down the jump into 5 basic movements:
1) Arms Swing Upward
PLUS (+)
2) Head and Back Straightens
PLUS (+)
3) Hips Thrust Forward
PLUS (+)
4) Legs Straighten and Push
PLUS (+)
5) Calves Flick the Feet Downward
EQUALS (=) Vertical Speed of Centre of Gravity
This is a prime example of Accumulation of Momentum through Sequential Joint Movements. Sequential means not all at once, but rather one right after another. Each successive movement begins while riding along on the moving platform of the previous body part.
The most important thing is that the movements happen in sequence, one right after another.
Each movement lags slightly behind the previous movement in the chain. Each movement begins while riding along on the moving platform of the previous body part movement.
If the movements happen parallel, that is, all at once, the overall speed is dramatically reduced:
1) Arms Swing Upward
at the same time that...
2)Head and Back Straightens
at the same time that...[/i]
3) Hips Thrust Forward
at the same time that...[/i]
4) Legs Straighten and Push
at the same time that...
5) Calves Flick the Feet Downward
this results in only one speed</u> contributing to the Vertical Speed of Centre of Gravity
How does all this relate to my Golf Stroke?
Hopefully by now, after all I've written, you can construct a well-reasoned answer yourself.
Just like in the jumping example, your goal is to accumulate maximum momentum through sequential joint movements. The difference is, in jumping, momentum starts at the arms and ripples down through the body and ends at the feet.
It's the same idea in golf, except the sequence of movements are reversed. During the start of the Downstroke, Momentum starts from the Feet and works its way up the body to the Knees, Hips, Shoulders, Elbows, Wrists and into the Golf Club. This sequences of movements is known as the Pivot Gear Train.
By ommiting any part of this system (e.g. the feet), you are significantly reducing your ability to Transfer Momentum into the Clubhead, and ultimately, into the Ball.
Now, very few Golfers actually completely omit parts of their Gear Train. How many golfers have you seen who doesn't use their Feet at all? Or their Hips? Not many. They're using their Feet, Knees, Hips, etc., but since they can't even get beyond the Lady's Tee, they can't be Transferring Momentum optimally. So what's going on?
They are trying to initiate these movements together or all at once, or parallel to each other, and just like in my jumping example, the speeds don't add up and Momentum doesn't get transferred along the joints. None of their individual body part speeds have added to one another, therefore no Accumulation of Momentum has occurred. The individual speeds are not adding to one another, therefore, overall speed has been dramatically reduced.
Remember, you want sequential, not parallel movements.
It's important that you don't try and force this. Let it just happen. Just let it flow naturally.
But how?
My fingers are getting tiered...
tongzilla
New
No.
Why is there a Simultaneous Release Motion for the Hitter anyway? Because of the natural consequence of Right Arm Drive-Out Action, which the Swinger doesn't have. Points and counter-points. Pros and cons. We can go on forever.
Also remember that using a Simultaneous Release does not negate the use of the Pivot Gear Train for the Hitter, which starts from the Feet, etc. as described in my above post. In other words, both Hitters and Swingers can use the Pivot Gear Train. It is independent of the type of Release Motion employed.
Since I love following these physics discussions, let me throw in a couple of questions currently lingering in my Incubator...
1) Can a Hitting procedure with a lower clubhead speed, but more effective mass hit the ball as far as a Swinging procedure with more clubhead speed and less mass?
2) Is it possible that a Swinging procedure would have an unstressed clubshaft prior to impact with the sweetspot traveling at a greater speed and surpassing the shaft, looking like the primitive illustration below of clubshaft and ball...
(.
while a Hitting procedure would have a stressed clubshaft with the sweetspot lagging behind the shaft, looking like this...
).
My apologies in advance if the answers are clearly provided in the book.
1) Can a Hitting procedure with a lower clubhead speed, but more effective mass hit the ball as far as a Swinging procedure with more clubhead speed and less mass?
2) Is it possible that a Swinging procedure would have an unstressed clubshaft prior to impact with the sweetspot traveling at a greater speed and surpassing the shaft, looking like the primitive illustration below of clubshaft and ball...
(.
while a Hitting procedure would have a stressed clubshaft with the sweetspot lagging behind the shaft, looking like this...
).
My apologies in advance if the answers are clearly provided in the book.
tongzilla
New
By the way, neither I or Homer said that Speed is more important than Thrust.
In fact, it's good to have a High Thrust - Low Speed (dictated by distance of shot in hand) Stroke in both Hitting and Swinging because it gives a nice positive Pressure Point #3 to drive against the ball.
It is possible to increase Overlap of Accumulators, and therefore increase Thrust, using Simulataneous or Sequenced Releases. For example, an Automatic Snap Release that employs Maximum Trigger Delay will result need lots of Overlap -- and this can be demonstrated with Hitting or Swinging.
quote:Originally posted by armourall
Since I love following these physics discussions, let me throw in a couple of questions currently lingering in my Incubator...
1) Can a Hitting procedure with a lower clubhead speed, but more effective mass hit the ball as far as a Swinging procedure with more clubhead speed and less mass?
2) Is it possible that a Swinging procedure would have an unstressed clubshaft prior to impact with the sweetspot traveling at a greater speed and surpassing the shaft, looking like the primitive illustration below of clubshaft and ball...
(.
while a Hitting procedure would have a stressed clubshaft with the sweetspot lagging behind the shaft, looking like this...
).
My apologies in advance if the answers are clearly provided in the book.
1) Yes - mass is an important factor!
2) The first is throw away (hitting OR swinging) and represents improper Rhythm (sequence)
quote:Originally posted by EdZ
quote:Originally posted by armourall
Since I love following these physics discussions, let me throw in a couple of questions currently lingering in my Incubator...
1) Can a Hitting procedure with a lower clubhead speed, but more effective mass hit the ball as far as a Swinging procedure with more clubhead speed and less mass?
2) Is it possible that a Swinging procedure would have an unstressed clubshaft prior to impact with the sweetspot traveling at a greater speed and surpassing the shaft, looking like the primitive illustration below of clubshaft and ball...
(.
while a Hitting procedure would have a stressed clubshaft with the sweetspot lagging behind the shaft, looking like this...
).
My apologies in advance if the answers are clearly provided in the book.
1) Yes - mass is an important factor!
2) The first is throw away (hitting OR swinging) and represents improper Rhythm (sequence)
Ed,
Regarding #1, would that make clubhead speed a less reliable factor in clubfitting for a Hitter?
Regarding #2, I've seen more than one photo of the shaft bent forward prior to impact, but I believe they were all Swinging. Would appreciate it if someone had photos of the shaft lagging backward without throwaway they could post.
bantamben1
New
i would like to see a shaft bent backwards before impact also i have seen one bent forwards many a time.quote:Originally posted by armourall
quote:Originally posted by EdZ
quote:Originally posted by armourall
Since I love following these physics discussions, let me throw in a couple of questions currently lingering in my Incubator...
1) Can a Hitting procedure with a lower clubhead speed, but more effective mass hit the ball as far as a Swinging procedure with more clubhead speed and less mass?
2) Is it possible that a Swinging procedure would have an unstressed clubshaft prior to impact with the sweetspot traveling at a greater speed and surpassing the shaft, looking like the primitive illustration below of clubshaft and ball...
(.
while a Hitting procedure would have a stressed clubshaft with the sweetspot lagging behind the shaft, looking like this...
).
My apologies in advance if the answers are clearly provided in the book.
1) Yes - mass is an important factor!
2) The first is throw away (hitting OR swinging) and represents improper Rhythm (sequence)
Ed,
Regarding #1, would that make clubhead speed a less reliable factor in clubfitting for a Hitter?
Regarding #2, I've seen more than one photo of the shaft bent forward prior to impact, but I believe they were all Swinging. Would appreciate it if someone had photos of the shaft lagging backward without throwaway they could post.
BobbySchaeffer
New
Tongz,
Top-notch post about Accumulation of Momentum and the gear train.
Top-notch post about Accumulation of Momentum and the gear train.
oztrainee
New
Dear Bobby
Tongz is a friend of mine; and he said to me, you are the main influence of getting him involve with the yellow book. I presume you will be seeing Lee on the 16 Jan 06 Just wondering whether you will allow Lee to take a bit of Video while you are doing the teaching live... Perhaps say a few words to Tonyz too.
Kenny To
GSEB
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