Brian Manzella
Administrator
... and most use the right arm incorrectly and that reduces their distance by 30 yard ... but they also gain distance to the right or left by 30 yards ...
Part of it is the WHEN, Steve. Correct?
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Part of it is the WHEN, Steve. Correct?
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SteveT
Guest
Sorry, I'll have to pass on that exercise again. I must have posted thousands of words on that topic on BrianM's old forum and I don't think there is much to be gained by repeating it. Besides those that hold TGM and Homer as gospel, nothing will budge them off their ardent beliefs ..!!!
Homer did his best, and when he first published, science was all the rage so he just plopped in everything he could lay his hands on to back up his personal observations .. even 'computer' concepts. If he had omitted Chapter 2, I think the guy might be on the level of Hogan (and used someone other than his good wife in the photos) ... but he tried to scam us with his 'scientific' musings and fell flat ... but don't tell that to the believers even if Homer contradicts Isaac Newton ... Isaac never swung a golf club, so what does he know about the physics and pheel of golf ..???!!!!
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SteveT
Guest
Maybe, maybe not ... but I have had an interesting PM exchange with your Jim Kobylinski ... and I did view 15 minutes of your video.
The problem is that neither you nor Jim use the same terminology as Jorgensen does in his book "The Physics of Golf" in Chapter 9 on the D-plane.
I am having difficulty correlating the downward clubhead path with outward results. It's something that I will have to study from the original text by Jorgensen ... with his diagrams and 'equations' ...!!!!
Thanks for the help.
mjstrong
New
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SteveT
Guest
EUREKA MOMENT !!!!
BrianM .... Okay, now I see the outward to the right clubhead path in your video, but in geometric theory it's small .. maybe pushing the clubhead path by 2º right at most.
If you use this geometry ... a horizontal baseball swing with an late hit will send the ball to right field ... but if you could hit the ball with a vertical swing, it's center field. Okay, but with the golf club on a lie angle of say 55º it will be somewhere between right and center field. Does that analogy make sense to you .. it does to me ...??!!!
Now let's add some numbers to the golfswing example. Let's say we have an 8 inch divot for the downward path which means it's 4 inches off bottom. With the large golfswing radii, you can just assume that 4 inches is about 4º to the right if it was horizontal ... but at the 55º lie angle you can chop that 4º down to say 2º .. which is geometrically generous.
If you can't explain the D-plane clearly and in 10 minutes, you've got a problem.
BrianM .... Okay, now I see the outward to the right clubhead path in your video, but in geometric theory it's small .. maybe pushing the clubhead path by 2º right at most.
If you use this geometry ... a horizontal baseball swing with an late hit will send the ball to right field ... but if you could hit the ball with a vertical swing, it's center field. Okay, but with the golf club on a lie angle of say 55º it will be somewhere between right and center field. Does that analogy make sense to you .. it does to me ...??!!!
Now let's add some numbers to the golfswing example. Let's say we have an 8 inch divot for the downward path which means it's 4 inches off bottom. With the large golfswing radii, you can just assume that 4 inches is about 4º to the right if it was horizontal ... but at the 55º lie angle you can chop that 4º down to say 2º .. which is geometrically generous.
If you can't explain the D-plane clearly and in 10 minutes, you've got a problem.
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SteveT
Guest
I apologize for being a johnny-come-lately ... and I will terminate discussion on the D-plane because my ignorance is showing badly ... sorry and thanks to BrianM and Jim for their assistance.
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SteveT
Guest
Draw me a picture ... and does my kiddie example using sin a = a for large radii not say the same thing as your Trig def'n ..??
Would you believe I came up with that without drawing a picture?
I played with actual Trackman numbers and "back-calculated" my way into it.
Are you familiar with Trackman definitions?
http://thebrandingengine.com/WAMUser/UserFiles/243/File/TrackmanDataReport.pdf
Let me chew on the large radii equation...
I played with actual Trackman numbers and "back-calculated" my way into it.
Are you familiar with Trackman definitions?
http://thebrandingengine.com/WAMUser/UserFiles/243/File/TrackmanDataReport.pdf
Let me chew on the large radii equation...
mjstrong
New
Seriously?
Not sure if I got you on the first part.....but if you're saying you're hitting down 4*, and your VSP is 55*, then you're shifting your True Path 2.8* to the right of your "plane line". So ya....I think you're in the ballpark.
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SteveT
Guest
Hey, savydan ... I was using BrianM's example from his Essential D-plane video which shows an 'early' downward impact point that shifts the D-plane to the right ... sort of like the horizontal baseball bat swing and late impact example that I used.
In your 'tan' calculation, I assume a 45º VSP would result in a 2º shift to the right .. so I was disoriented in my ballparking.
Now go to my new post declaring myself a D-plane 'exspurt' and my erudite analysis of good and average golfers .. and see if that peaks your curiosity ...!
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