Science of Golf: The Golf Swing

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United States Golf Association (USGA)

Күн бұрын

Пікірлер: 40

@ChrisSmith-xf9md 7 жыл бұрын

Exactly right! After 25 years of playing badly a coach in Bangkok told me to lower the plane of my swing. Immediately I found torque - hip turning become the most natural thing and I'm hitting them 200 easily now!

@encinobalboa 5 жыл бұрын

Golf is different for everyone. Phil says great chippers have great tempo which helps the full swing. Been more diligent practicing chips and pitches and it has paid off.

@mcpappysgolden 5 жыл бұрын

Tempo is SO important, I agree. For me, it is especially so in chipping, but it's important for all clubs.

@TheNYgolfer 7 жыл бұрын

Just go to 4:16 for a simple explanation. "rotate as much as you possibly can with your shoulders and then you are just letting it go with your hips".

@b.please2986 4 жыл бұрын

Lift with your back in a quick twisting jerking motion lol

@Pur33stPk3r 3 жыл бұрын

@@pugarjayanegara2184 during back swing shoulders come back first. During down swing the hips pull the shoulders

@johnnyparker9928 5 жыл бұрын

More videos like this please. Busting myths with phantom camera at 5000 frames per second.

@justjames1111 5 жыл бұрын

Interesting, however you forgot C.O.A.M (Conservation of Angular Momentum). You may notice that the clubbed stays closer to the player in the early part of the downswing, which helps them maintain their rotational speed (rather like a figure skater who pulls their arms (mass) closer to spin faster). It is then the change of direction as the hands slow down and the clubhead (which has lagged behind) now has no choice but to catch up. This creates a feeling of effortless power, as you describe.

@henryreardon69 Жыл бұрын

"JustJames" mentions Conservation of Angular Momentum below, and I agree that this principle applies as the weight of the club face is nearer the center of rotation during the initial swing acceleration. But there is another effect, too, and I have never seen it fully discussed. If your wrists were truly so supple and relaxed that they could create a true, simple pivot for the "second pendulum" (the club), then it would be impossible for the shaft of the driver to bend during the swing. All of the force on the club head would be centripetal, that is, along the shaft, putting it in tension. But in fact, as the hands pull the club down and then the club head extends out with the rotation of shoulders/wrists triangle (the first pendulum), the shaft DOES bend, which means the golfer is torquing the grip end of the shaft, as well as a applying torque to move his or her wrists around the center of rotation. Some golfers do this more than others - compare John Rohm's swing to Paula Cramer's, for example. Rohm's shaft is bent considerably during the acceleration part of the down swing. Here is my point of confusion: if that acceleration continues through impact, the driver shaft will remain curved through impact. But if the angular acceleration is only during first part of the swing, and then the rotation speed becomes constant through the impact (no acceleration), then the driver will spring back through its neutral shape, and, if timed right, the spring will add to the club head's velocity through impact. Is this something the pros can control? The time it takes for a club to spring through will vary for each club, faster for a shorter fairway wood, and shorter still for a hybrid. And wedges are probably so short that its hard to impart enough torque to bend them at all. And clubs come in different stiffnesses, which affects the torque required to bend them. I'd love to see an in depth discussion of this aspect of the swing from folks who really know the physics and the feel of the clubs.

@jonp3216 28 күн бұрын

Hands actually slow well before impact as the club head accelerates due to the centrifugal effect (and conservation of momentum). The shaft flexion has a negligible contribution, it bends back from the top as the hands accelerate, then bends forward before impact, again because of centrifugal effect (stand on your driver head - no spikes! - pull on the shaft and it bends forward, more with a whippier shaft).

@TeddyCavachon 3 жыл бұрын

The key to making the double pendulum effect and centripetal force work in a golf swing is the biomechanics of the side bend action in the downswing. Side bending at the top of the backswing causes the the hands to drop and right arm tuck back in to body at the same time the club head is still moving forward at the backswing the action Harvey Penick called “The Magic Move”. When it comes to torque one should study and learn the action of Ben Hogan. He created torque in the arms for stability in the way he gripped club in the air and lowered it with “towel wringing” action. He never completely grounded the club, instead allowing it to hang and find ideal pendulum equilibrium with GRAVITY before swinging and using the mass of the club head extended out over the feet with arm and club shaft as a counter balance which allowed him to sit down over his heels with lower legs vertical which is critical for a balanced swing plane in the downswing. Recreational golfers slice the ball because the club force pulls them on their toes or pulls hand further away from body than at address. Hogan’s grip and address technique prevented both from happening why he was a legendarily consistent ball striker. He set his back foot square then flared his feet inside his shoes to pre-torque his back leg in the backswing. At the point in the backswing when the hip turn maxed out in Hogan’s wide, sweeping, mechanically efficient takeaway at 45° closed and the club head forced the wrists to swing the club mass up (very predictably) his straight back leg was torqued to the max, ready to unwind and power the downswing even in his partial swing shots, a significant difference from the shoulder centric swing style taught today which used over a lifetime causes back injuries. In Hogan’s swing the momentum generated in the wide backswing combined with the V^2 centripetal generated whipping club up around hands pulls the club and hands up effortlessly and shoulders 45° past hips EFFORTLESSLY bringing the club head mass up directly over the center of rotation and balance between the heels, which is what is needed to set up a naturally balanced path (i.e., club seeking gravity finding its own path) back down to the ball. Hogan fired his coiled back leg and hips first laterally then rotationally to pull the mostly passive shoulders down lagging 45° progressively adding SIDE BEND to keep hands moving forward faster than the shoulders they are attached to, which is required by the physics to maintain the power stored in the shaft bent with the “magic move” at the start of the downswing. If you analyze the relative movement of hips, shoulders and hands in a well executed double pendulum swing you will see his sequence: 1) hips stop and lock 45° open because back foot prevents further rotation until heel is lifted; 2) side bend is maximized as hips stop causing shoulders to slow down and become and become the pivot point for the left arm mass to whip forward separating from chest towards target, causing bent right arm guiding club to be pulled straight accelerating the mass of the left arm down target line dragging club down behind. [This is the part of the swing recreational golfers get wrong. Instead they whip right shoulder at target because they do not understand or use the side bend action in their downswing.]; 3) At the point hands drop below waist the limitation of “thumb up” radial deviation in the golfer’s wrists causes the club head mass being pulled down directly above the hands to swing outward outside the hands which is what allows GRAVITY to start accelerating it around the hands to get the club mass moving in a circle (the second pendulum) around the hands at the same time the entire left arm rotates causing it to swing back towards the target line. Some golfers have more flexible wrists with more ability to “lag” and delay the release of the club head ( i.e., prevent premature casting) than others giving them a natural biomechanical advantage. Snead could pull thumbs back and touch forearm and Hogan was nearly as flexible in his wrists. 4) Gravity acting on the club head accelerates it around the hands down to the ball. The mistake made by recreational golfers at that point of the swing is moving the hands forward too quickly, what the locking up of the hips and side bend action prevent. The club needs time and space to allow the attraction of club head mass to mass of earth to whip it around the hands-a greater amount of time and space for longer shafted clubs than shorter, why the hosels are angled differently requiring ball to be placed further back in stance for shorter clubs due to hosel angle and further forward with longer ones. All the lag needed in the golf swing between hands and club head is engineered into the hosel angle of each club, something 99.9% golfers don’t realize because nobody explains the combined cause and effect of how the body biomechanics need to interact with the physics in a way they understand intellectually. The force of gravity, which is what the takeaway and backswing work against and what powers the downswing is seldom mentioned but knowing how to use gravity is the key to an efficient repeatable and well balanced golf swing because gravity is the most consistent force on our planet. Why there will never be any golf courses in outer space 😂 The “sustain the lag” style of swing is not the most efficient utilization of the physics something a few golfers - notably Harry Frankenberg, Moe Norman, and Ben Hogan - realized intuitively if not intellectually. Those three discovered a way to lock their wrists into full ulnar deviation BEFORE impact which allows maximum acceleration during the compression of the ball on the face and automatically squares the face to the target as the wrists lock. It makes hitting powerful shots dead straight mechanically simple and as repeatable as the “Iron Byron” robot the USGA uses to test conformity of equipment. Fortunately the USGA has not figured out (yet) how regulate how a golfer move their body. 😄

@larrydeleau4664 5 жыл бұрын

Video forgot to mention that these 2 golfers have been hitting golf balls since they were 5..

@NemoArtics Жыл бұрын

2:11 gorgeous swing

@thomasfraser9072 2 жыл бұрын

Looking inside the Golf Swing (copyright 2022) Every professional golfer in the world does: The Crunch & Turn Golf Swing Professional golfers know that their obliques are the central powerhouse needed in there every swing and that their shoulders; arms, hands, wrists and even their club head must leg behind from the very start of their backswing to post impact to their ball on their downswing It is: The Perfectly Centered Pendulum Golf Swing that can be applied as hard as a golfer wishes for distances and accuracy. Or as softly as the golfer wish for closer targets Unlike most amateur golfers; Professional golfers learned early to empty their head of parasitic swing thoughts as they simply using their obliques muscles one hundred percent of the time. How? Why? When? By starting their swing with their lead side obliques tilting their body; their trail side obliques stretches turning their body as they arrive on their trail side to their full backswing. And then from there they simply crunch with this trail side obliques as their lead side obliques stretches and turn their body back to their lead side to the full completion of their downswing . The obliques are the central powerhouse in every golfer swing. It is: The Perfect Pendulum Swing that’s extremely accurate and repeatable. The obliques incredibly starts and stops the golfer swing as well. Did you know that our obliques working together are both responsible to safely accelerating and decelerating the golf swing. Our Obliques coils our body creating the torque and stored elastic energy needed in our downswing. Think of these facts as well 1 Thé harder your obliques are working on the job; the further and straighter your ball will go. The softer your obliques works, the less distance your ball will go to your intended target 2 Club head speed at impact is the function of angular acceleration 3 Angular acceleration is the function of torque The obliques are the only muscles inside our body that can produce the unique and required angular acceleration and deceleration that the Golf Swing requires. Unlike the baseball swing that is vertical and horizontal the golf swing is neither: It is unique! It is oblique! These great golfers shouldn’t mind as we look internally inside their body, imaging the power behind their great swings as I just explained it fully to you. All great golfers especially Bryson D know that his obliques are the only muscles groups inside his body that will protect his spine and back for a lifetime of fantastic golfing All great golfer swing along their target line regardless of the stance they take at setting up to their ball The golfer choosing a neutral stance ( their body parallel to their target line ); swings along both their body line as well as down their intended target line The golfer with either a closed stance or open stance should only swing down the line to their intended target and never along their body line as well The Feeling of Greatest of the golf swing is finally out of the bag for all of us to share freely if we wish to Cheers and good golfing to all.❤️😃👍⛳️

@TheWedgeWizard Жыл бұрын

Yes your obliques are important for some power and some consistency there’s way more factors. You say to never swing along your foot line when open or closed but that’s exactly how you shape the ball. This comes in very handy when actually playing golf and not just trying to hit a driver on a range for various reasons like distance control, playing around obstacles, certain slopes, Certain wind conditions, etc. such small measurements in degrees are very much controlled through a chain reaction and your smaller arm and hand muscles are manipulating things in many different possible ways. I disagree with your liner and simplistic thinking of the golf swing. I can teach anyone to make a text book swing fairly quickly but developing the touch and control to score well in the game takes more.

@jonchadwick1171 2 жыл бұрын

I'd like to add that just talking about torque actually isn't definitive enough. I suggest viewing Dr. Kwons video about Torque to better understand how it actually works.

@AM-qi4im 3 жыл бұрын

The roller coaster analogy confuses me.

@SofaKing880 7 жыл бұрын

4:46 that was SO FAR out of the toe😂

@caseywebb7914 7 жыл бұрын

wow that's what i noticed too. bad image for last shot of the vid ha

@TheNYgolfer 7 жыл бұрын

Ju's Outdoor And would you believe it if I told you that the ball ended up drawing right to left? I hit one just like it a few days ago. Felt the club violently twisting clockwise. Ball flight was a low draw that started right edge of fairway and landed left center but lost 30 yards. Gear affect is a wonderful thing :)