Let’s try this. How far back would one have to go to hear from a golf professional that in a good golf swing the shaft does not move? Do you know the answer to that 4-30.
That image and graph I previously posted were produced by ‘Inverse Dynamics’. If you really want some detailed answers I suggest you look at Dave Tutelman’s website because the biomechanics of the golf swing is very complicated. It shows you everything you need to know about the variables you seek (ie. golf shafts/clubs, physics of the swing plus many other topics).
If you wish to understand Jeff Mann’s theories on the biomechanics of the golf swing (ie. swinging , hitting, swing-hitting) then the link is below
Perfect Golf Swing (perfectgolfswingreview.net)
I have raised many topics on his NGI forum if you wish to learn more.
1 Like
Here’s a golf swing with a Phantom Camera . If someone can produce something like this for an ABS student swing, we might be able to see if they can create shaft flex at and through impact (ie. without hitting a ball).
Golf Swing in Phantom Slow Motion: Incredible Human Movement - YouTube
I’m honestly curious…my youtube has all the swings you need. Id say im definitely a swinger with the driver, but ive got face on mid snd long irons you can try.
Not sure if you actually have to use a phantom camera though…
1 Like
3 Likes
Id say thats proof…pretty freaking obvious there!
1 Like
To hear from one? Like a golf professional saying it? I don’t see why that’s relevant.
Golf shafts go into lead deflection. Period. From hickory to steel to graphite. We didn’t have the technology until pretty recently in golf history to measure it, so Walter Hagen, Bobby Jones, Hogan, the 80’s-90’s Australasian Tour, and the 70’s and 80’s PGA Tour are gone to the winds of time. But we do have the present, we have the most athletic, powerful, and talented Tour ever, we have GEARS, and we have a free offer for John to get tested. I’m afraid that’s the best I can give you.
Every professional and amateur golfer measured has the shaft in lead deflection coming into and at impact. Everybody’s hand speed decelerates in the second half of the downswing. Everyone’s body segments decelerate to transfer speeds to other segments and ultimately the clubhead. You can look at the measured, empirical data, accept what really happens in a high level golf swing, or you can choose to believe drills, feels, and intents mirror reality. They haven’t, they don’t, and they won’t, but you can believe whatever you want. I have no other way to say it or communicate it than showing you literal GEARS data and providing explanations of why it happens.
The key is to increase the range of motion with the backswing… full shoulder rotation, forearm rotation, then start the downswing with the lateral move similar to what Hogan and Knudson did… then you can save your guns, and not unwind so early. At that point, you have what you need to keep pressure on the shaft through the strike at the bottom. Hogan talked about wishing he had 3 right hands… which I would agree… maybe 5. Hogan didn’t say that because “feel isn’t real”. It’s what he did, and I can attest that it is what I am doing also.
Then to keep pressure on the shaft, you just have to rip the pivot post impact and keep pressuring the shaft until you literally run out of room.
This is a hitters action, not a passive swinger’s dead hand throw at the strike. It’s not something familiar to swingers. I look forward to the day that real scientists figure this out and are able to communicate this properly… the difference… because it is not the same thing.
I will say this for the 1001th time… you can’t do this with lightweight modern gear. The great swings developed from heavier gear… increasing mass in the clubhead greatly inhibits over acceleration. Heavier gear helps slot the club and increases range of motion in relation to the lower body without having to increase left arm travel. This is key.
Active hands striking, active pivot through the strike and beyond.
5 Likes
I promise you and @72holeouts that the left shaft is in lead deflection. If it was measured in 3D on GEARS it would unequivocally confirm it. We’re talking measurements in millimeters, but it will be there. The right shaft is in lag because it hit the ball.
No, you are wrong… there is no loss of shaft flex here. ZERO
A. If you look forward to the day it’s figured out then go get on GEARS, for free, and take them up on the offer. I’m sure we can source the funding for the plane ticket. If you get on GEARS and hit real golf shots with a shaft in lag at impact you will have golf scientists form around the country offering to fly you wherever you want to get tested.
B. If it is possible, but only possible with old, flat equipment, then what use is it to anybody? How do you get a talented junior or college prospect or player, or professional trying to make a living, to give up 75 yards off the tee in competitive golf? How do you get them to use a balata and hit low line drive irons into greens playing 7200 yard courses?
The frame capture 1/4 inch before impact shows you are incorrect. The frame after impact the shaft kicks back from the impact… but if you… or one of your naysayers do your homework here, you will see the ball has not been touched.
This might upset you, but it’s what happened on this golf swing. It’s all right there.
I 100% guarantee you it is in lead deflection.
It’s not… you are wrong.
Go hit it on GEARS. It will be definitive.
This isn’t easy to do… believe me. You should try it. You would learn a lot more that I would on an analytical machine.
1 Like
I make no claims that I always hold shaft flex on every swing I make. It’s one of the reasons I play XX shafts. I take that out of the equation.
However, on this swing, I clearly did … and that being said, a player like Hogan with forearms and a pivot much more dynamic than mine, would not have a problem repeating such an action.
The quest for excellence is constant and clear.
As far as GEARS, I don’t know that to be definitive. Can you explain how it would account for the stretching of the shaft at higher speeds from longitudinal acceleration? Anyone claiming that would not be a factor is not speaking from a standpoint of proper science. It’s a huge factor.