What Fredrik Tuxen, CTO of TrackMan, had to say about "zeroing out"

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Richie3Jack

Richie3Jack

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Kevin Shields said:
Actually, if your attack angle was different with each club, you can have the exact same horizontal plane line throughout the bag when hitting off the ground.
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I thought with the irons the horizontal plane needs to be 1/2 of the AoA, per Trackman's latest newsletter. Furthermore, per one of Brian's posts on Trackman, the AoA tends to vary with each club..

What am I missing?




3JACK
 
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Kevin Shields

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Thats only on a 63 degree plane angle. If you strike down the Tour average (5 degrees PW - 3.1 degree 3 Iron) and have varying orthodox plane angles you can have identical horizontal plane lines throughout your set. I think this is the route that would provide the ultimate in consistency.
 
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GPM1985

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goley said:
I posted a thread awhile back about a friend of mine and his Taylor Made MAT experience. His attack angle with a 7 iron was +2 on average... so i guess it is possible. He rarley take a divot and never really compress the ball....but he usually shoots somewhere near par. I found the thread but the link for the spreadsheet from taylor made are no longer available.
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How high does he hit the ball?

A while back Brian mentioned that when he tried to "hit up" with a 6-iron, the best he could do was about -1* AoA and that the ballflight was comically high.

I have a hard time believing in a scratch golfer who hits his irons with a positive AoA. I would need to see this in person, or watch Santa slide down the chimney come Christmas eve, in order to believe that a guy can hit up 2* with a seven iron and play good golf.
 
mjstrong

mjstrong

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I have been on Trackman a few times. The last time I went through a few shots with my 52 degree wedge, I was told I had a positive attack angle of 1 degree or something like that. Now, on the golf course, I take very normal divots ahead of the ball, so am not too sure of the accuracy of the measurements taken in that one instance.

I think if you're hitting off of a fluffy mat, as opposed to on a grass range, subconsciously, some players may alter the way they hit the ball. This could explain what happened in my case, and perhaps even this other player.
 
ggsjpc

ggsjpc

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Kevin Shields said:
Actually, if your attack angle was different with each club, you can have the exact same horizontal plane line throughout the bag when hitting off the ground.
Click to expand...

This would be within the 6 to 3 degree range I'm guessing in attack angle. Kevin, what has been your experience of attack angles changes with all irons staying within what range?

I need to rethink this because this(what I said above) would be degrees not necessarily yards. I'll do some math and come back.
 
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Kevin Shields

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You are correct that the attack angle range based on orthodox plane angles is 5.0 to 3.1 (i have it written down) Whether you like zeroing out or not, this makes it easier to think about because most better players deliver a progressively lower attack angle as they go down the set.
 
ggsjpc

ggsjpc

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Kevin Shields said:
You are correct that the attack angle range based on orthodox plane angles is 5.0 to 3.1 (i have it written down) Whether you like zeroing out or not, this makes it easier to think about because most better players deliver a progressively lower attack angle as they go down the set.
Click to expand...

As you figure it, is it somewhere around 4 or 5 yards left? That's about what it looks like to me.
 
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Kevin Shields

Super Moderator
ggsjpc said:
I'll do some checking but it seems like this number left wouldn't match the AoA's Kevin mentioned. At 100 yards, with a vsp of 65degrees the AoA would be 3 down and this would be the least shallow.
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John, start with PW at 66 VSW and 5.0 aOA and 2.4 left HSW and hit 136 yds
 
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