Many of my readers will remember my postings in earlier days on the “trebuchet” effect found in the golf swing.
Now, the “trebuchet” concept I brought up from time to time didn’t really work for some people in the sense that it was more a vague notion explaining the “drop” of the head to the rear and back during the down swing.
It seems there would be another way to explain leading side leverage however – the trebuchet!
I was looking for something to better explain the leading side leverage and it took me back to my old standby, the trebechet.
It is even written in some scientifically-themed sites and blogs that the golf trebuchet principle is found in the golf swing itself, so I’m not the only person to have thought of this.
See, if you turn the trebuchet upside down, you would have the catapult arm now being the left or leading arm at the bottom of the swing. If you lifted the drop-weight, the arm would fall, correct?
How about this explanation from this Real World Physics Problems site (I’ve inserted the bolded text myself separately):
As you can see, the counterweight pivots around a much shorter distance than the payload end. The advantage of this is that the payload end of the beam (the hands at the end of the leading arm) reaches a much higher linear velocity than the counterweight end of the beam (the left or leading shoulder).
This is the principal of mechanical advantage, and is what allows the payload to reach a high launch velocity.
However, because the counterweight pivots around a much shorter distance, its weight must be much greater than the weight of the payload (the club head), to get a high launch velocity. However, increasing the mass of the counterweight beyond a certain point will not help, since the limiting speed of the falling counterweight is free-fall speed. (gravity drop!!!)
So, if you look at the C7 as the fulcrum in the trebuchet, then you would see that movement of weight at the end of the catapult arm would move the arm itself.
So, if you think of using your weight to produce leading side leverage to your swing, you have to forget about the harpoon and other things that have to do with people thinking “down” with the hands and club.
Rather, if you are at the top of the back swing in the cranked position, you have to think of how the shifting of your weight back to the leading foot will cause your coiled position at the top to reverse.
Where you had your right shoulder back behind you and your left shoulder down and beneath your chin, the shifting weight (with a stable C7 as the fulcrum) will produce the trebuchet effect – as your weight moves and settles on the leading foot, your hips must open with the swivel action, and this pulls your left shoulder forward, then up and away from its “at the top” position.
This is unstoppable. This is leverage. Your body mass moves to the other side of the fulcrum, moving your leading shoulder back and away, leveraging the left or leading arm downwards. Combine that with the gravity drop that occurs anyways, and you’ve got your leveraged down swing.
This is where my “Leading Foot Stomp” also came from – I knew that the more aggressively I shifted my weight to that leading foot (when you do it really fast, it looks almost like a stomping action with the leading foot to really load that gravity drop & acceleration into impact).