Homer assumed Separation to be at Low Point but what if it isnt?

[mb6606]

[size="4"][font="Comic Sans MS"][color="DarkOliveGreen"]I don't know if Trackman measures ball flight and then calculates clubhead/face path and geometry or the other way around or a combination of both. What if you swung the club without a ball?

If Trackman uses any ball flight data to calculate clubhead path, face angle and swing plane, I can't be a "True Believer" in it's use as a training aid because I can't accept mystery. Besides, ball flight cause and effect are Apples and Swing Mechanics are Oranges. But I imagine it would make an excellent clubfitting tool and it does make for fun TV ball flight instant replays.

TM is a tremendous teaching tool in the correct hands. The only way to hit a dead straight shot - no side spin (curve) is to have your path zero and club face zero at seperation. TM tracks the flight and spin of the ball very precisely.

[Daryl]

TM is a tremendous teaching tool in the correct hands. The only way to hit a dead straight shot - no side spin (curve) is to have your path zero and club face zero at seperation. TM tracks the flight and spin of the ball very precisely.

Thank you for clearing that up. I didn't know. Does it only measure ball flight and spin? Does it measure Shaft Angle at Impact or is it a calculation?

[mb6606]

Thank you for clearing that up. I didn't know. Does it only measure ball flight and spin? Does it measure Shaft Angle at Impact or is it a calculation?

http://trackman.dk/Products/TrackMan-Pro.aspx.

[Daryl]

Ya, Ive been to the website but they won't tell me. I was hoping that you would know for sure.

[mb6606]

Ya, Ive been to the website but they won't tell me. I was hoping that you would know for sure.

Dynamic Loft*
Spin Loft*
Face Angle*
Total Distance*

These are the interpreted numbers the other readings are measured. Obviously total distance cannot be measured since the ball is running along the ground.

Face angle is the concern. Homer wrote the ball leaves the clubface at essentially right angles. Jorgenson wrote (D plane) the ball curves away form the path. If you hit the ball with TM reading zero path and zero club face the ball flies dead straight. I have confirmed this with my own eyes/swing.

[Daryl]

Dynamic Loft*
Spin Loft*
Face Angle*
Total Distance*

These are the interpreted numbers the other readings are measured. Obviously total distance cannot be measured since the ball is running along the ground.

Face angle is the concern. Homer wrote the ball leaves the clubface at essentially right angles. Jorgenson wrote (D plane) the ball curves away form the path. If you hit the ball with TM reading zero path and zero club face the ball flies dead straight. I have confirmed this with my own eyes/swing.

I'm confused. You said that face angle is interpreted. But in the last paragraph you said that zero path and zero clubface = a dead straight ball. Don't you mean to say that when the ball goes perfectly straight, that TM interprets this as zero path and zero face angle? I dunno?

Oh, you are saying that face angle is measure by TM Radar. Oh, I thought that it had only one radar gizmo behind the ball. It has 2?

[mb6606]

I'm confused. You said that face angle is interpreted. But in the last paragraph you said that zero path and zero clubface = a dead straight ball. Don't you mean to say that when the ball goes perfectly straight, that TM interprets this as zero path and zero face angle? I dunno?

Oh, you are saying that face angle is measure by TM Radar. Oh, I thought that it had only one radar gizmo behind the ball. It has 2?

Correct I was not clear - when the ball goes absolutely dead straight (zero curve) - TM will read 0 path 0 face angle. You really need to experience it for yourself. Sean Foley wants his players to swing 3 degrees inside out with a clubface roughly 1.5degrees open. Results in tight little draw at the target.

[nevercrosses]

Assuming a centered hit, if the club face angle at separation is at the target and the direction of the club head after separation is right of that direction, the ball will draw. No question.

As far as trackman goes, it calculates face angle based on initial launch conditions. Using impact tape and a knowledge of gear effect and D-plane, ball flight can be explained quite nicely. Vertical swing plane is measured and has nothing to with the shaft plane angle. It measures the movement of the sweet spot relative to the ground.

[O.B.Left]

So whats the difference between an inside out impact for a straight line plane line and an inside out stroke?

Is it just a matter of degree?

Does Trackman or D plane measure what we'd call Hinge Action? A rate of clubface closing or whatever?

[nevercrosses]

So whats the difference between an inside out impact for a straight line plane line and an inside out stroke?

Is it just a matter of degree?

Does Trackman or D plane measure what we'd call Hinge Action? A rate of clubface closing or whatever?

You can call it whatever you like. If the clubhead direction while the ball is in contact with the face is pointing right of(whether it is down and to the right or to the right or up and to the right) the direction the face is pointing at separation (assuming a centered strike) the ball draws or hooks or whatever words best desrcibe it. It will have a spin axis tilted to the left (assuming a right hander) and direction of lift perpendicular to that axis.

Trackman and D Plane do not measure hinge action as it is irrelevant. The balls comes off the face at some time no matter which hinge action is employed.