ProXR Theory Testing Overview

ProXR Theories and Testing5/17/13

©2013, Giant Project, Inc. ProXR US Patent 7,744,497

Notice how the batters’ hands move from behind the center axis of the bat...

©2013, Giant Project, Inc. ProXR US Patent 7,744,497 Grady Phelan 314-322-7449 [email protected]

Conventional Bat KnobCompression Theory

mailto:[email protected]


The hands are forced to rollover the knob to complete the swing...





Wrist-roll happens immediately after theintended point of contact...





The forces exerted on the base-gripping hand make the wrist exceed its natural range of

motion...





This is the moment of maximum compressiontargeted by this research project*.

* Initial testing conducted in early 2006 at Washington University School of Medicine, Bio-Mechanics Lab, showed the compression exerted in the area of the hypothenar can exceed 80psi in less than 2/10s of a second.





Bad Breaks or Design Flaw?

Knob Compression Results

It only makes sense that if the conventional bat knob is creating this kind of damage in players’ hands, it is likely

having a negative impact on swing performance too.©2013, Giant Project, Inc. ProXR US Patent 7,744,497 Grady Phelan 314-322-7449 [email protected]



Detail of Knob-Compression-Zone and Underlying Structures




Knob Compression Induces Thrown Bats

Thrown bats almost ALWAYS land in foul territory and mostly on the pull-side of the batters’ swing. Trajectory of the batters’ swing mechanics typically result in the bat flying over the dugout and into the crowd.




Dangerous & Real ProblemLiability for teams, players and fans




Knob Compression Causes Broken Hamate Injuries

• Broken hamate results in surgery and a 6 to 12 week recovery

• Data indicates that many players experience a decrease in strength, power and performance long after hamate excision

• Understanding the cost to the player and team are part of my research




ProXR Performance Advantages

• Greater plate coverage – from improved range of motion

• Quicker hands to the hitting zone – from reduced compression

• Great transfer of power – from hands to the ball due to improved kinetics of the swing

• More precise bat control – from freer range of motion




Progress to Date




Progress to DateAccepted Into The National Baseball Hall of Fame, 2011

First (and only) Angled Knob Bat Ever Used In Regular Season MLB Game




They Said it...

ProXR Field Testing Project• Field test conventional bats and the ProXR bat technology using pressure

mapping sensors and high-speed video to prove my theories about conventional bat design• Inducing thrown bats

• Broken hamate injuries

• Negatively impacting players ability to reach their optimum swing performance

• Assembling a team of experts in the fields of baseball, hand specialists (therapists, surgeons and trainers), physics and electronics to help guide and properly conduct these field tests

• Testing to be conducted & completed July 2013

• Data to be published by mid-August 2013




Thanks for Your TimeThe ProXR bat technology development has been a ten-year project that has already had a positive impact on the

baseball bat. The testing being planned for July of this year is the last step in the journey that will shed light on

the underlying theories that ProXR is founded on.

Check out the ProXR Kickstarter Project Launching Soon!

Thanks,

Grady Phelan




ProXR Theory Testing Overview

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