No, that's your question.
Like I've said, I don't have to question it, just like I don't have to walk off a cliff to know that gravity will make that a one-time experiment.
Why do I know the JV golf swing will lose distance? Because you're removing a lever and a speed-producing part with the torso rotation.
This will be simplified a little bit, but the JV golf swing generates speed by moving (effectively) two things: the lead arm across the chest and the wrist-shaft angle - hinging/unhinging (or "lag").
The "traditional" swing (as if there is only just "one" type of swing) retains those two levers - the lead arm across the chest and the "lag" - and adds another: the rotation of the lead shoulder back and around. It doesn't move super fast in linear MPH, but it moves very fast rotationally, and acts as a moving platform against which the lead arm can act.
A baseball player can throw a baseball 90 MPH from a mound, but put that mound on a flatbed rail car and make the train travel at 60 MPH, and he can throw the ball 150 MPH.
The torso rotation isn't the dominant speed generator in the golf swing - that is still the arms - but there is no doubt that it adds speed to the clubhead.
I don't have to walk off a cliff to know that gravity is going to make it a one-time deal.
I have. I've made swings in a JV style swing. Someone above linked to my "pre-set drill" and it's pretty similar to the JV swing. I lose about 10% of my distance and would lose more except I tend to have far more than optimal shaft lean when I do this and so the ball launches about two clubs lower.
The "why" is above.
Now, if you were a "bad" golfer who flipped, had poor contact, etc. then you could see a "similar" distance with a swing that made it a bit easier to have good contact (or even, as with me, lower launch angles due to "too much" shaft lean). But that doesn't mean your swing speed is actually higher, or that you haven't put a "ceiling" on your improvement that's lower than your ceiling with a "traditional" swing.
That's not accurate. There might not be an "abundant" number for a bunch of reasons, including the possibility that JV probably doesn't have that many students. That they have better things to do, that they moved on… whatever. Lots of reasons why there might not be an "abundance of people."
It's very similar, yes.
They do. They also… turn their shoulders quite a bit.
Jamie Sadlowski can hit a driver 300 yards from his knees (even though he still gets to turn his torso a little bit)… what he can't do is hit it as far as he can letting his hips and torso fully rotate:
There you go. An example of someone who has a lower ceiling.
I suspect he hasn't published anything because it would show what science says it would show: a decrease in swing speed.
Okay, this was a new one.
I was at the range this weekend. And a couple of guys were kind of sitting behind me on the benches they have there. I guess they were watching me, because all of a sudden one of them pipes up and says "Hey, do you realize you never sole your driver behind the ball?" …
At first I wasn't sure he was talking to me. Then when I realized he was, I asked him to repeat the question. He did. I told him I never really thought about it.
Anyhow, to make a long story short, he went on and on about how I should "Sole" the driver behind the ball. It would increase my "Muscle Memory" to help my consistency. I thanked him politely and told him I'd discuss it with my swing coach.
A few things:
1 - I don't think I've ever "Soled" my driver behind the ball. I've had 2 long term and a half dozen other swing coaches and none of them have EVER mention it to me.
2 - I've never seen this guy getting lessons at the range even though they have a half dozen teaching pros operating out of that place. I've also seen this guy play golf and he's not particularly good.
3 - I've never actually noticed if this is a common practice among good golfers, either the pros or the single digits or scratch players I know. I've simply never thought about it.
4 - I should mention this comment came at an odd time as I was hitting the driver really well that day. Very consistent. So, I don't know how much he was watching. But the question/comment struck me as odd.
Anyhow, after the dude mentioned it to me I took notice of what I actually do. I pretty much just hover the driver behind the ball and then begin my backswing. He's right I never put the club on the ground, or "Sole" it as he called it. Maybe it started back when I was a beginner I've always paid a lot for my driver and I probably didn't want to get it dirty.
So, I ask the crowd. Do you "sole" your driver?
To me, this is the most telling thing. He's trying to "sell" his instruction, sell his swing, with generalities and claims, but with no data. I feel pretty certain that if he COULD produce data that would help his marketing, he would have done it already. The absence of real data suggests, at least to me, that proper data wouldn't help him. I can certainly believe that this "simplified" swing can help many players have more consistent contact. I find it really difficult to believe that this swing doesn't limit the top-end potential for most players, simply because it eliminates some of the sources of swing speed used in more complicated but traditional swing mechanics.
Looking at my scores over the past 2 seasons, walking has given me the best low scores but only if I use my push cart. The push cart has a seat so I can sit and rest as needed. I like to play quickly and riding in a cart tends to get me to the ball too quickly. I tend to take one quick look at the shot and swing. If I am walking, I have time to consider the shot and find I make better judgements. So, all in all, walking with a push cart is better than riding. Riding is better than carrying my clubs once warm weather arrives.
I had mentioned in a previous post you can determine this yourself so easily. Get a swing speed radar or go to a golf place that has one you can use. Take full swings without hitting a ball with both your traditional swing and the JV swing.
Ultimately the ceiling of a swings distance capability is club head speed.