Unbelievable: The truth about lower arm rotation revealed by Hackmotion.
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17 Comments
How easy is the hack motion to use/understand? Could it be over analyzing things making it more complicated than it has to be?
I would like to see a side by side video of graph and swing synchronized
Excellent sir, I am training my students to play a Frisby with lefthand ( right hand golfer).
That was very good, appreciate your videos
This is great timing, until a few months ago my shots were nearly all blocks to various degrees, losing distance and making me aim more and more left of target to compensate. All because of the teaching of a 'stable release ' . Recently i have been , at impact, 'feeling' like im rolling my hands almost to the point that it feels like i'm going to hit the ball with the toe edge….. but the ball has been flying straight to a slight draw, and with added distance. This is also what i see the pros in slow motion do but still no one mentions this until you and your previous video on the subject…look forward to your future findings sir, cheers for posting
11:50 I am very pleased with your video message; you made an issue very clear for me about releasing or not.
That's where its confusing to me , it's either holding it or you are rotating your right hand,
Subscribed. This is revolutionary content that will really help older players like me adjust to more limitations in movement knowing the release can come early and be more natural. Thank you!
Excellent! Thank you for your service 😃
Excellent work, Jonathan.
In addition, the reason that the club appears to stop closing at impact is the collision with the ball. Film John Rahm (or yourself, or use Hack Motion) at the same position in a practice swing and the face would be more closed. Striking the ball straightens the face until natural rotation takes over again. Of course, the collision also slows the club head down by more than a third of its speed. I have even seen some YouTube pros demonstrate how they "hold the club face square" after impact in slow motion. What they actually do is hit their iron slightly off the toe so the face actually opens after impact!
I firmly believe that manually squaring the face at impact is a myth. It happens naturally. All good players are toe up (more or less) at P6, toe up (more or less) at P8. Half way at P7 the face has to be square. Repeat 10,000 times. Job done!
Perhaps this is why draws travel farther than cuts… the brain allowing that slight wrist rotation for the draw and slight delay to a cut
Thanks very much for making this video. I have owned the Hackmotion for a short time and have been trying to better analyze the data. The flexion/extension data is pretty straightforward since recommended ranges are identified. I am having a little harder time with the ulnar/radial and rotation parameters. I realize that each data set has a direct influence on the other so it’s important to understand the total picture. On a very basic level, I have noticed my rotation numbers tend to be slightly positive at impact with a slightly extended wrist (but within the recommended range based on my address position). My interpretation of the data is this combination would lead to a closed clubface and a tendency to miss left (which is my tendency). I hope you will make a few more videos like this. I think the information would benefit everyone but would be particularly useful to the Hackmotion user community.
What is missing from this discussion is there are three ways the right arm can rotated, either by torso rotation around the body, by rotator cuff muscles in the shoulder or by low arm rotation with the radius bone around the ulna. The problem is most amateurs use the rotator cuff and the chest muscles to throw the club down and rotate the club to square, when in fact the trailing shoulder should be in external rotation during the down swing until after contact. Only after contact does the trail shoulder internally rotate. The exemplar swing starting at 8:19 shows this very well. The club's rotation to square is from the lower arm motion, as you say, but it absolutely must not be from rotation from the shoulder socket. Talking about hand rotation without understanding the difference between turning the hand by either shoulder rotation or lower arm rotation is problematic.
JT @ 7:48 "and this I find really fascinating". Me too Jonathan. Me too. The more we learn, the more we understand how little we knew 🙄. Thanks for some more learning 😊
Interesting! I would love to see rotation measured relative to the rotation of your sternum as compared to rotation in empty space. No doubt the wrists rotate, but what creates the “stable” look of the pros is that their wrists rotate far less relative to their sternum compared to amateurs. Love your channel. Thank you for the great content!
This is excellent information. I tried not rotating my forearms for years and it was a nightmare. To achieve the kind of "body swing" where all parts are connected and the clubface squares itself, the club would have to be weightless.
Very true. As soon as I figured it out (took years) my self, the hcp dropped from 18 to 10 in one season.