D plane question

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jmpga4

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I hit some balls on a lauch montitor this morning and was curious about a few things.

I hit one shot in the middle of the face with an Angle of attack 2.1 up

My Face Angle to the target was 4.7 open
My Path was 1.9 in to out

Shouldn't that ball start to the right and fade?? My actually result was a ball that started a bit right of target with a slight draw.

Please explain????????

Thanks,
Jason
 
Michael Jacobs

Michael Jacobs

Super Moderator
jmpga4 said:
I hit some balls on a lauch montitor this morning and was curious about a few things.

I hit one shot in the middle of the face with an Angle of attack 2.1 up

My Face Angle to the target was 4.7 open
My Path was 1.9 in to out

Shouldn't that ball start to the right and fade?? My actually result was a ball that started a bit right of target with a slight draw.

Please explain????????

Thanks,
Jason
Click to expand...

Jason,

Positive it was middle of the face and not slight toe? What Launch Monitor?
 
J

jmpga4

New
Positive it was in the middle. We just got a Foresight launch monitor. I saved a picture of the data but can't get it in a reply so you will have to trust me.
 
mgranato

mgranato

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There aren't that many possibilities... the ball, gear effect, or bad data.

I do have some questions about the Foresight with HMT as it reports to measure things relative to the target when it can't see the target because of it's setup location. I've not got to compare data yet with the HMT version so I'm just going off first impressions. I'd be interested to hear more and see the data shots.
 
J

jmpga4

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Is there anyway I can send an image or the report from the shot. I have one saved as a .jpeg and one as a .pdf

Thanks,
Jason
 
Frans@France

Frans@France

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I did some calculations based on the Clubdata provided by HMT unit from CG2. Problem to me seems that the main unit measures ball data and the HMT measures club data but that there is no option to make 100% sure both are aligned correctly. Most video clips I have seen have conflicting club and ball flight data. Some calculations I've done seem to show a misalignment of around 3degree between both units....
 
natep

natep

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jmpga4 said:
Is there anyway I can send an image or the report from the shot. I have one saved as a .jpeg and one as a .pdf

Thanks,
Jason
Click to expand...

Open an account on imgur.com, you can host your photos there online. Then you can post a link here.
 
J

jmpga4

New
a>
 
mgranato

mgranato

New
jmpga4 said:
a>
Click to expand...

Just by plugging in these launch numbers, I can't get them close to what the Foresight is calculating...

ScreenShot2012-11-30at50716PM.png


If the spin is correct, launch angle correct, and ball speed correct the carry is significantly off (-29 yds) and the height off (-37').

To get the carry up to 257 yds with the reported spin and launch numbers, the ball speed needs to jump pretty good...

ScreenShot2012-11-30at52130PM.png


However, this still leaves a total height much lower than the Foresight's.

To get the carry the same, the height the same, with the reported spin the launch needed to come way up...

ScreenShot2012-11-30at52549PM.png


In all cases the ball's axis tilt needed to be -10 degrees to match what the Foresight saw. I'm not sure that tilt is possible with center contact and those face to path numbers. I see some of the numbers making sense in certain combinations, but I'm not sure I see the numbers making sense as they are reported. It does make me curious to see a larger sample from the HMT.
 
W

wulsy

New
The more I think about the impact "facts" the more I doubt them.

Oh, by the way, I was hitting a few wedges off bare baldy lies and would like to ask the following question:
Does divot direction REALLY represent path to any meaning degree? Most of my golfing life I would have say "What a fekin stooopid question, OF COURSE it does" but now I'm not so sure. I can hit it DEAD STRAIGHT and I mean DEAD STRAIGHT with a divot that is way right of where the ball starts and ends, and it spins right on landing on a flat green.

Would be grateful for any hypothetical explanation.
 
W

wulsy

New
That's interesting mgran. I thought the tendency would have been that everyone would have said that divot direction is very closely correlated with path.

How would you explain the possibility that the divot points right but the path is not rightwards?
 
K

Kevin Shields

Super Moderator
True path is the force line right at the point of contact, not the extension of a divot. Still think its adequate, I certainly look at my divots.

Your ball flight is heel contact for sure if they point right and the flight is straight
 
J

jmpga4

New
Thanks for the responses guys. What do you think the final verdict is? Bad Launch monitor? Bad reading? I just wanted to make sure that based on the readings, that ball should have faded? correct??

Thanks so much
 
Michael Jacobs

Michael Jacobs

Super Moderator
jmpga4 said:
Thanks for the responses guys. What do you think the final verdict is? Bad Launch monitor? Bad reading? I just wanted to make sure that based on the readings, that ball should have faded? correct??

Thanks so much
Click to expand...

That monitor takes a couple of snap shots of ball after impact - Ball is still reforming from its deformation ... Trackman and Flightscope are tracking radars that track the whole story of the flight
 
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