Finally....a "D" Plane pic.....by Manzella

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Brian Manzella

Administrator
DPLANESNEAD.jpg
 
how is this different from the concept of clubface orientation and path? what is the third point in the plane and how does it make a difference? Is that slanted orange line supposed to be parallel to the end of the ball curvature?
 

Brian Manzella

Administrator
how is this different from the concept of clubface orientation and path? what is the third point in the plane and how does it make a difference? Is that slanted orange line supposed to be parallel to the end of the ball curvature?

Well....

The old PGA "Ball Flight Laws says that the ball would start on the PATh and curve to the face.

Wrong.

The ball starts between 70 and 90% toward the WHOLE FACE (including loft) and curves AWAY from the path.

:)
 
Brian, can you do us a big favor and show how the ball would go based on the old PGA "Ball Flight Laws? I think that would help some. Thanks
 
Just to get the straight in my simple mind...


Mr Sneads path would be "y" Yards right

Mr Sneads clubface would be aimed about "x" yards right at impact/separation

Ball would start about 70-80% toward "x" yards right and curve left "z" amount to finish left of target.

Is there anyway of working out how much to the left it would go?

Are all computer launch monitors configured with "old" ball flight laws?
 
Well....

The old PGA "Ball Flight Laws says that the ball would start on the PATh and curve to the face.

Wrong.

The ball starts between 70 and 90% toward the WHOLE FACE (including loft) and curves AWAY from the path.

:)

Here is a true Hogan story . Hitting balls perfectly he all of a sudden hit 2 pull draws in a row and promptly went back to the clubhouse and locked himself away for a few hours not to be disturbed. Upon returning from the deep session of contemplation he was asked what was the answer . All he said was the face was closed.
See its no big deal is it and Hogan didn't need all the fancy gadgets to figure out the problem
 

Brian Manzella

Administrator
The Gary Wire inspired, old PGA Ball Flight "Laws" result:

The be fair, the PGA did NOT use the path or clubface in 3-d, like the D plane.

balllaws.jpg
 

Jim Kobylinski

Super Moderator
Not to be a pain in the ass but i think the best picture would be to combine the photo of the "old" pga ball flight laws and overlay where the face would need to be to properly get that same kind of "push-drawish" flight that so many people want to create. Maybe create a blue line next to the yellow clubface line that would create that type of flight.

I think people would get it more.
 
Just to point out a slight error in the picture.

I have to assume that the lines are really meant to be - the line perpendicular to the clubface and the other is the vector of the clubhead force. If so, there is no relationship between the 'path' (which anytime I have heard it being used means the entire orbit as a whole), as the only way is to draw that tangential line is in relation to the radius (golf club) around the left wrist as its center.
 

Dariusz J.

New member
Well....

The old PGA "Ball Flight Laws says that the ball would start on the PATh and curve to the face.

Wrong.

The ball starts between 70 and 90% toward the WHOLE FACE (including loft) and curves AWAY from the path.

:)

So they must be VERY OLD ball flight laws. D-Plane (or whatever it is being called) and its consequences are well known quite for a long period of time. At least, in clubfitting world. ;)

Cheers
 

Chris Sturgess

New member
Does the 70-80% number apply to 300 yard drives as well as 100 yard wedges? 50 yard wedges? How much does it vary? And where exactly did the data come from on this? I don't doubt it, just curious?
 
....

Does the 70-80% number apply to 300 yard drives as well as 100 yard wedges? 50 yard wedges? How much does it vary? And where exactly did the data come from on this? I don't doubt it, just curious?

Callaway is one source Chris...they did a thing about it on their iron byron.....

And try it with your putter....shows it up even more (no compression to deal with).....
 
And it is amazing how many people (so called swing /academys/gurus) have got it wrong!........

Shouldn't be a PGA instructor in the UK who graduated since the early 2000's who doesn't know this, it's been a major part of the 1st year curriculum since then. In fact, when I trained I saw trainees sent out of the class if they couldn't tell the tutor what ball flight (including start line and finish) would result from the combination of clubhead path and face angle given to them.
 
Something I think that is not emphasised enough is that the more loft the club has, or in other words the greater the angle between the two lines of the 'D plane' are apart the less force is transfered to the ball.
 
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