Problem with 2-C-1 #1

[Weightshift]

Ideal Application Looking Toward Target

It appears to me that the solid ball and club outline is nearer the reader (or further from the target) than the dashed ball and club outline.

Next to the toe of the solid club, it says

CLUBFACE - SEPARATION POSITION

, but surely separation is nearer the target, than impact (separation occuring after impact)?

One other thing: the inclined plane and the clubshaft plane are shown as parallel as they approach the target, but the sweet spot plane is shown as converging on these other planes -- why?

TIA
Regards,
Alan

[drewitgolf]

Mr. Kelley always drew diagrams like this according to general engineering principles. The dashes are always the preceeding location of the solid drawing, similar to drawing up blue-prints.

The Sweet Spot Plane is the Plane you should be concerned with. It is the Sweet Spot Plane, not the Clubshaft Plane that lies on the flight line or target line. The clubshaft does not remain on a constant Plane, it rotates around the Sweet Spot. The Sweet Spot is trying to get in line with your #3 PP so you can use it to trace your delivery line while sensing Clubhead Lag (actively for a Hitter, passively for a Swinger).

[Yoda]

Mr. Kelley always drew diagrams like this according to general engineering principles. The dashes are always the preceeding location of the solid drawing, similar to drawing up blue-prints.

The Sweet Spot Plane is the Plane you should be concerned with. It is the Sweet Spot Plane, not the Clubshaft Plane that lies on the flight line or target line. The clubshaft does not remain on a constant Plane, it rotates around the Sweet Spot. The Sweet Spot is trying to get in line with your #3 PP so you can use it to trace your delivery line while sensing Clubhead Lag (actively for a Hitter, passively for a Swinger).

Great post, Drew. There is much 'meat' here, especially for such a short post. I recommend a very careful reading.

Then, read it again.

[Weightshift]

Mr. Kelley always drew diagrams like this according to general engineering principles. The dashes are always the preceeding location of the solid drawing, similar to drawing up blue-prints.

Well I'm glad you cleared that up I see now that there is a dashed tee drawn under the dashed ball outline, which confirms your reply.

Why is the CENTRE LINE shown curved at impact?

[drewitgolf]

2-C-1 depicts Dual Horizontal Hinging and its closing only motion, as opposed to 2-C-2 Dual Vertical Hinging and its Lay-Back only motion.

Look at 2-C-1 #2B, notice the Impact Point is not the back of the ball, but the inside aft quadrant. When the ball leaves the Club Face, however, at Separation it is at a different location and the club face is now at right angles to where the ball leaves it. Impact and seperation are at two different places, about 3/4 of an inch difference.

Notice in 2-C-1 #2B that the center line does not point down the flight line, it points to "right field", just as it does in 2-C-1 to take into account the closing motion between Impact and Seperation.

Go to 2-C-2 and notice because there is no closing of the Club Face, the Center Line for both Impact and Seperation are both straight lines.

Hope this helps.

[Mike O]

2-C-1 depicts Dual Horizontal Hinging and its closing only motion, as opposed to 2-C-2 Dual Vertical Hinging and its Lay-Back only motion.

Look at 2-C-1 #2B, notice the Impact Point is not the back of the ball, but the inside aft quadrant. When the ball leaves the Club Face, however, at Separation it is at a different location and the club face is now at right angles to where the ball leaves it. Impact and seperation are at two different places, about 3/4 of an inch difference.

Notice in 2-C-1 #2B that the center line does not point down the flight line, it points to "right field", just as it does in 2-C-1 to take into account the closing motion between Impact and Seperation.

Go to 2-C-2 and notice because there is no closing of the Club Face, the Center Line for both Impact and Seperation are both straight lines.

Hope this helps.

Drewitgolf- On Fire!

First- where the hell is the "On-Fire" SMILIE!!!! Come on guys get this website up to speed!

Second, Be careful about the 3/4's of an inch- depends on what shot - how much compression- and even with a Driver- I'm not sure the center of gravity of the ball moves 3/4's of an inch- (But I love to see the evidence! )

Nice work Drewitgolf!

[Weightshift]

Thanks very much drewitgolf and tongzilla!

[tongzilla]

Why is the CENTRE LINE shown curved at impact?

Other questions you may want to consider...
Why are some center lines drawn as curves?
What is Homer trying to show by drawing these curves?

The curved center line solves the basic problem of trying to draw 3-D figures on paper.

Take a golf ball. Draw a circle around the equater of the ball. Now look straight at the ball with the line facing you. You should see a straight vertical center line.

Now rotate the ball clockwise a little (45 degrees or so) around the horizontal axis. This is represented by the curved vertical center line at impact in 2-C-1 #1 and #2A and #2B.

Similarly, if you look at a Cut Shot (which is just a shot using Vertical Hinging) in 2-C-1, you can see the ball never rotates around the horizontal axis since the clubface remains square through the shot. However, because of the laying back motion of the clubface, this causes the ball the spin back a little between impact and separation, as you can see with the curved center line in 2-C-2 #3.

[annikan skywalker]

Other questions you may want to consider...
Why are some center lines drawn as curves?
What is Homer trying to show by drawing these curves?

The curved center line solves the basic problem of trying to draw 3-D figures on paper.

Take a golf ball. Draw a circle around the equater of the ball. Now look straight at the ball with the line facing you. You should see a straight vertical center line.

Now rotate the ball clockwise a little (45 degrees or so) around the horizontal axis. This is represented by the curved vertical center line at impact in 2-C-1 #1 and #2A and #2B.

Similarly, if you look at a Cut Shot (which is just a shot using Vertical Hinging) in 2-C-1, you can see the ball never rotates around the horizontal axis since the clubface remains square through the shot. However, because of the laying back motion of the clubface, this causes the ball the spin back a little between impact and separation, as you can see with the curved center line in 2-C-2 #3.

Excellent observations Leo.... Helps those of us who are ADD to pay attention easier!!!

[Mike O]

Other questions you may want to consider...
Why are some center lines drawn as curves?
What is Homer trying to show by drawing these curves?

The curved center line solves the basic problem of trying to draw 3-D figures on paper.

Take a golf ball. Draw a circle around the equater of the ball. Now look straight at the ball with the line facing you. You should see a straight vertical center line.

Now rotate the ball clockwise a little (45 degrees or so) around the horizontal axis. This is represented by the curved vertical center line at impact in 2-C-1 #1 and #2A and #2B.

Similarly, if you look at a Cut Shot (which is just a shot using Vertical Hinging) in 2-C-1, you can see the ball never rotates around the horizontal axis since the clubface remains square through the shot. However, because of the laying back motion of the clubface, this causes the ball the spin back a little between impact and separation, as you can see with the curved center line in 2-C-2 #3.

Probably- rotate back versus spin back would be a better choice - as that term of spin might mislead some but that's just my two cents- good post leo.