What tilts the spin axis?

Status
Not open for further replies.
dschultz6072

dschultz6072

New
So, Bmanz is not just spouting Abbot and Costello. This comes from the TrackMan Facebook question:

TrackMan University "Question of the Week":

All else being equal, which of the following scenarios will create a higher Spin Rate?

A)
Positive Spin Axis: -4 Club Path, +2 Face Angle. With -4 Attack Angle, +20 Dynamic Loft and 85 mph Club Speed

B)
Negative Spin Axis: +4 Club Path, -2 Face Angle. With -4 Attack Angle, +20 Dynamic Loft and 85 mph Club Speed

C)
Both A and B generate the same Spin Rate

The answer is C.

Jamie Mcconnell: C, face and path dont matter, spin loft and speed create spin

Klaus Deschmann: @Jamie ... Wouldn't put ist that way, because spinloft is defined by the face vector and the path vector. They just happen to be the same in this example

TrackMan® C is the correct answer. Klaus Deschmann, you make a nice comment above. Spin Loft is not just the Dynamic Loft minus the Attack Angle. It will be very close to this value most of the time but the two will vary depending on the Face and Path values.
 
B

Brian Manzella

Administrator
Nothing wrong with the video, super basic stuff you'd learn with me in a lesson in the first minute we looked at your TrackMan numbers.

The point I made—correctly I might add—is that the off center hit, and its gear effect, is part of the whole D-Plane.

Since the ball hit the toe side of the CoG, the face was KICKED OPEN an extra few degrees, so the top of the D-Plane was created by this off center collision.

But, since the toe was kicked open DURING impact, the heel has moved toward the ball, and the ball rolled slightly toward it picking up draw spin.

Which has all been covered on this forum, and in the ANTI-SUMMIT videos dozens of times....
 
R

Ringer

New
Brian Manzella said:
Nothing wrong with the video, super basic stuff you'd learn with me in a lesson in the first minute we looked at your TrackMan numbers.

The point I made—correctly I might add—is that the off center hit, and its gear effect, is part of the whole D-Plane.

Since the ball hit the toe side of the CoG, the face was KICKED OPEN an extra few degrees, so the top of the D-Plane was created by this off center collision.

But, since the toe was kicked open DURING impact, the heel has moved toward the ball, and the ball rolled slightly toward it picking up draw spin.

Which has all been covered on this forum, and in the ANTI-SUMMIT videos dozens of times....
Click to expand...

Chance of any high speed video of this? Seems odd that the ball would be rolling towad the heel with a toe hit ball.
 
W

wulsy

New
Brian Manzella said:
Nothing wrong with the video, super basic stuff you'd learn with me in a lesson in the first minute we looked at your TrackMan numbers.

The point I made—correctly I might add—is that the off center hit, and its gear effect, is part of the whole D-Plane.

Since the ball hit the toe side of the CoG, the face was KICKED OPEN an extra few degrees, so the top of the D-Plane was created by this off center collision.

But, since the toe was kicked open DURING impact, the heel has moved toward the ball, and the ball rolled slightly toward it picking up draw spin.

Which has all been covered on this forum, and in the ANTI-SUMMIT videos dozens of times....
Click to expand...

So the top of the d-plane is never representative of the face at the point of impact (except on centre hits, which never really happen). Ain't that a shame?
 
D

DCgolf

New
Brian Manzella said:
The TOP OF THE D-PLANE is THE NORMAL-to-the-CLUBFACE "point." (displayed as DYNAMIC LOFT + CLUBFACE)

The BOTTOM OF THE D-PLANE is the RESULTANT PATH "point" (displayed as SWING DIRECTION [plane or base line] + ANGLE of ATTACK)

:)

Trackman SPIN LOFT is the difference between the DYNAMIC LOFT and ANGLE of ATTACK. Real Spin Loft is the difference between the top and the bottom of the D-Plane.
Click to expand...

This is much more descriptive than Tman's definititon. Ive always thought it misleading at best
 
Status
Not open for further replies.
Top