Stack & Tilt Worldwide

Here it comes Big D. Bringing the to the Lone Star state for Stack&Tilt Network Training and Stack&Tilt Practice Days. This includes, a day for coaches laying out the system, and 2 Days of grinding in the details on the range. The Practice Days are 4 hours, 3 people, with Andy on the range. DM us with questions and enroll at stackandtilt.com/events.

Here it comes Motown! Detroit, MI. USA Stack&Tilt Practice Days with Andy and host Will Ellender are SOLD OUT!

Connecting players and coaches from around the world using a system for golf. Living the

July 10 is SOLD OUT for Half Day Session with Andy in Frankfort, Ky. USA. That’s 3 players, 4 hours, and Stack&Tilt. Enroll at stackandtilt.com/events. Dm us with questions.

It’s coming Frankfort, Ky. USA 🇺🇸. The is hitting KY with Stack&Tilt Practice Days. Half Day Sessions with Andy are limited to 3 players for 4 hours of grinding in the details. Enroll at stackandtilt.com/events. Dm us with questions.

Human motion is described in three planes of motion:
Flexion/Extension (up and down)
Lateral Flexion (side tilt)
Rotation (in and out)
Only one golf book describes the swing comprehensively through these three planes of motion and their mechanical relationships. To repeat: there is one book that explains the golf swing in all three planes of motion.
Using this framework, Stack & Tilt developed a series of biomechanical hypotheses and a formula designed to help golfers blend these motions into a functional control system. The same formula also provides motion experts with a framework for evaluating 3D data.
One of the central hypotheses was that when a golfer is rotated 90 degrees, forward bend equals zero, and side tilt equals the amount of forward bend established at address.
Twenty years ago—well before the widespread availability of 3D motion-capture data—Stack & Tilt identified and predicted movement patterns that would later be observed in the world’s best players. Previously, Stack & Tilt presented examples of the top four players in the world whose swings demonstrated remarkable similarities to the model. Pictured here are additional players from the current Top 10, again displaying striking similarities that align with the Stack & Tilt formula.
A few observations:
This is not a collection of isolated measurements taken from a single swing and recited from a Gears report. It is a predictive formula that can be expanded, tested, and adapted to different players and situations. It provides a foundation for meaningful 3D analysis and a framework that can be challenged, refined, and built upon.
The Stack & Tilt formula establishes a biomechanical link among elite players. In doing so, it challenges popular instructional messages—such as “swing your own swing”—often given to higher-handicap golfers. The data suggests that the world’s best players share important movement patterns that are far more similar than they are different.

Pictured is a graphic generated by GEARS showing the swing positions of golfer Bryson DeChambeau. The graphic provides a compelling illustration of the dynamic range of trail shoulder horizontal abduction and adduction throughout the swing. Here the Dynamic Range is expressed by the cumulative displacement in both directions. Motion analysts use the dynamic range of motion of a body segment to evaluate its position, sequencing, and contribution to energy production. In this example, calculating the dynamic range of trail shoulder horizontal abduction/adduction is straightforward. At P1 (setup), the trail shoulder is approximately 0.6 degrees adducted. During the backswing, it horizontally abducts to 65 degrees. During the downswing, the trail shoulder horizontally adducts from 65 degrees abducted to approximately 15 degrees abducted at impact (P7), representing 50 degrees of adduction. Combining the 65degrees of backswing abduction with the 50 degrees of downswing adduction yields a dynamic range of motion of 115 degrees from P1 to P7. From P7 to P8, the trail shoulder continues to adduct, reaching approximately 0 degrees. This additional 15 degrees of adduction increases the total dynamic range of trail shoulder horizontal abduction/adduction to 130 degrees as measured by GEARS. If one believes their data.

A few observations

Many observers underestimate the magnitude of horizontal abduction/adduction in both directions, this undervalues the participation and angular velocity from the trail arm segment.

Next, a 50 degree downswing adduction demonstrations the arm is not just lowered to the side passively. Which challenges descriptions of the swing as arms lowered to side and rotate.

The GEARS data illustrates trail shoulder horizontal abduction/adduction in the trail arms motion and 130 degrees demonstrate this movement is a significant contributor to club delivery. The 50 degrees from the end of the backswing to impact demonstrate the club in not lowered to side passively.