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

[nevercrosses]

Trackman measures Ball Flight with Doppler Radar. Only "Ball Flight". It uses "calculations" to report Spin Rate. That's why you need to tell Trackman the Club that you're using is a 6 Iron. What happens if you punch in "4 Iron" and used a "6 Iron"?

D Plane Theory doesn't use the concept of Hinge Action, Line of Compression, etc. It recognizes "Moment of Inertia" of the Ball as a "Listed" factor in "Effective Loft" but the connection to this "Advanced Level" of "Ball Control" is ignored because it isn't the primary purpose of "D Plane".

The first paragraph is incorrect. Trackman measures launch spin. It is not calculated. You don't need to type in what club you are using but you can so you can organize your data better.

Second paragraph is perfect. D Plane is not concerned with what is used to create impact alignments. It only explains how those alignments will affect the flight of the ball based on impact conditions.

[Daryl]

That's not what I've been told. Trackman people could have given me the wrong info or is it something new?

[nevercrosses]

That's not what I've been told. Trackman people could have given me the wrong info or is it something new?

Is it possible you were speaking with flightscope people? The information about entering club and spin calculation would be correct for them.

One of the reasons there is a big difference between the two.