Many golfers search for lag in the their down swing.
Lag is NOT essential for great golf. As you will see in the video Rocco Mediate as very little lag in his downswing and yet he plays fantastic golf. He also smokes really good Cigars. Rocky Patel Decades. Don’t say anything but he might be getting some real Cubans from Jimenez but don’t say anything please.
Lag is actually called “angular acceleration.” The greater the angle the faster one must move to keep up. This is found in marching a column left or right. Maybe you’ve seen ice skaters spinning in a circle and the last skater has to hustle to catch up to the circle of skaters.
How about a race track for runners where you see staggered starting points because the outside runner would be covering a longer circumference unless you move them forward.
In order to produce lag in the golf swing one must have a separation of the arms FROM the body on the down swing. Because the arms are as if they were on the outside lane of the track above, they must have a head start because they have more real estate to cover. Yes yes I know about the connected theory. It works for some folks like Rocco.
Your chest and upper body have such a short distance to reach the finish line which is impact with the ball, that the arms need a considerable head start with the longer golf clubs like the driver and not as much with the short irons.
Watch this video of a very kind student Ed Schneck that allowed me to use his excellent example of lag in his down swing that he was not even trying to produce.