Modelling Update – Indications Bear The Post-Model Out

The earlier posting about lofts wasn’t my intended topic of today – chalk it off as a rant triggered by years of watching this silly “he’s hitting an 8 on this approach!!” business when the 8 iron has a loft ten degrees lower than my 8 iron and between my 5 & 6 iron lofts.

No, the topic I was going to broach was that nothing I do with the floating pivot MCS Classic Golf Swing model can match the power of the model I’ve been working on since last summer.

I wouldn’t know with absolute surety before taking things to the range and the lab but since I began my speed work with my MacGyver’d SwingRite, I’ve noticed that I don’t generate quite the same power with the floating pivot swing as I can with the shorter-looking shift-and-post swing.

I’ve even tried the long drive action with the high hands and club shaft past parallel:


… but neither does it have the power of the shift-and-post.

Also a factor, I’ve decided not to even try swinging any other way because of the discomfort I began to feel around the leading knee due to the twisting force generated by the more circular action of the hips.

Trust me, I’ve hit pretty long drives with this kind of action:


Simply put, you can generate speed by spinning the torso and making the arms and clubs follow, or you can use pure and superior leverage to create even more speed without the twisting rotary force.

You’ll notice the long drivers and many of the Tour pros snapping and jumping with the leading foot because for one, they don’t release the anchored trailing foot but I would also venture to guess that there is also a risk of leading knee damage even with the release of the trailing foot due to the twisting of the body in the follow-through.

I tried various leading foot positions and even with a foot turned nearly to the target on the setup, I still didn’t like the twisting force on my knee on the follow-through.

Fortunately, the shift-and-post is giving me more power anyways than the other two swing types, so I don’t have to spent a lot of time trying to improve those models to withstand the twisting forces.

My equations when it comes to being mechanically-sound are simple – anything that causes risk of injury is either mechanically-unsound or just not optimal, so remove that element.

In the case of the leading knee, swing model + twisting force = bad, so swing model – twisting force = better.

Not exactly rocket science.

It could just be that I may need to look further into the complete mechanics so I may take another look at these swing types outside, but my experience with the indoor speed work seems to have given me the early evidence that the shift-and-post pivot is indeed superior to a rotary pivot, both in terms of power generation and mechanical soundness.

More to come!

6 thoughts on “Modelling Update – Indications Bear The Post-Model Out

  1. BM

    DJ,
    We are patiently waiting for some video of your new swing. Please end our torture and show us some! Respectully…

    1. DJ Watts Post author

      DJ,
      We are patiently waiting for some video of your new swing.

      So am I, BM! This was why I didn’t want to start writing about the swing until I have new video, because I’m impatient to see it as well.

      Unfortunately, I won’t be able to get any for at least another month or so. With any luck it’ll be an early thaw and I can be back hitting balls in March.

      Until then, your torture and mine are the same! 😉

    1. DJ Watts Post author

      Hi JJ – it’s a pretty fundamental difference but a basic one – the rotary pivot is like turning a barrel, and that’s how the hips turn and you get the shoulder turn.

      With the shift and post, the weight shifts over the trailing leg and the hips tilt (right hip higher as it’s on the post leg) and turn that way, creating the shoulder turn.

      There’s not much in either – my swing modeling has been more concerned with the other aspects of the pivots – the exact stance, the grip, the ball position for the club, and of course, how effectively one can return the clubface to the ball at impact using as little manipulation or steering of the body, hands, arms or club.

      Done properly, one could essentially play golf in the dark or blindfolded – theoretically of course, but that is the idea. Just as the Iron Byron, once set up, simply swings back and through, letting the ball get in the way.

      Fun stuff! And I’m having a blast, if not a tad sore with all the work that my muscles aren’t accustomed to of late 🙂

  2. JJ

    Got it! I’ve got my SwingRite out – starting to loosen up for the season. Anxious to hear more about your research. I like the idea of simplifying my swing thoughts (or eliminating them altogether). Been a year since I’ve practiced – lots of work to get back in some kind of form. Many thanks, as always!

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