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Old 01-26-2008, 07:49 AM
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12 piece bucket 12 piece bucket is offline
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Originally Posted by Daryl View Post
Sergio Pulley

Since I have absolutely no clue about including pictures, the geometry added to Sergios Swing pics are in the attached thumbnail. The difficulty I had in attaching this picture is somewhere between fixing a leaky faucet and rubbing two sticks together to start a fire.

If you start at the first picture of the sequence, notice I outlined Sergios Hand Locations on his Backstroke and Downstroke. I had to extrapolate one to finish the pulley.

Anyway, look at the Centers of the Pulleys.

The Pulleys are the same size. If you review Yoda next to Hogan in "The Gallery" their Heads are much more centered over the ball which results in better Straight Line Delivery Path and smaller Pulleys.

Sergio has small pulleys compared to the average Golfer however not as small as Yoda and Hogan. Keep in mind that for each inch the Pulley decreases in diameter, you have an exponential increase in Clubhead Speed and that means Lower Effort Output for equal Clubhead speeds. And that's not all. Yoda and Hogan enter the pulley closer to the pulleys Horizontal Centerline so even if they use the same size pulley as Sergio, they have more delay in Release. So, two properties of the Pulley are Size and Entrance Location.

Also, please notice that Impact Hand Location is not the Lowest Hand Location during the Swing but that the Center of the Lower Pulley is over the Ball. That means Phenomenal CF. Almost zero Clubhead impact deceleration. His Primary Lever becomes a steel rod. Awesome Clubhead Mass. You can write a book on that Issue alone. Consider that the next time you want to play the ball back in your stance.

Lastly; Do you see very much Delayed Release? I don't. It only looks like Delay because his head is so far behind the Ball at Impact.

Lastly Lastly; The centers of Sergios pulleys align with the impact hand location. That has nothing to do with anything. I just thought it made a really nice looking diagram.
Remember the endless belt is a concept to illustrate the differences in the hands moving in a wide circular fashion versus moving in a sharp more linear fashion. As your pictures illustrate the hands don't actually move in a straight line.

Now as for Sergio . . . go to Youtube and watch some of his swings. He stays right on top of the ball. There's not a lot of moving around in his motion of his head relative to a lot of the pros out there. Go to Youtube and watch some swing visions . . . The other thing you'll notice about this motion is there is relatively little axis tilt in comparison to some of the other dudes out there . . . Zach for example. If Sergio had tons of Axis tilt ala Ben Doyle you'd never have heard of him.

We've been here before but watch his swing and look how high his club is off the ground as the hands get in the area of the right and left thigh. This swing is STEEP. Look at Zach's motion that is SWEEPY. Watch the swings and watch the angle of attacks. Sergio has a big shift to a flatter plane but the swing is still STEEP.

Do some comparison work and see what you can figure out about how the motions are different and how the comparitively work.
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Last edited by 12 piece bucket : 01-26-2008 at 07:52 AM.
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