Bruce Devlin - 9 time PGA champion-
Nunchuk Shaft Spokesperson.
The Science Behind the Nunchuk™ Precision Shaft
The following is a brief summary of how keen observation, the laws of science, and personal innovation all combined in the creation of what has been called “The Best Golf Shaft ever made” – the Nunchuk™.
The following is a brief summary of how keen observation, the laws of science, and personal innovation all combined in the creation of what has been called “The Best Golf Shaft ever made” – the Nunchuk™.
Gerry Hogan- Inventor of Nunchuk Shafts
Early Analysis - Gerry Hogan’s interest in shaft function was triggered some forty odd years ago when he first noticed that multiple steel shafts were bent at the point where the shaft tip exited the hosel. Importantly, he observed that virtually all the shafts were bent forward, seldom, if ever, were they bent backwards.
Had the bending been a result of impacting the earth or the ball then the bending would have been backwards, not forwards. Had the bending occurred as a result of impacting a solid mass, such as a tree branch, the bending would have been located at the site of the contact between shaft and branch and it would be rare that this occurred at the junction of hosel and shaft.
The point that struck Mr. Hogan most forcefully at the time was: if so many shafts were permanently bending in such a manner as to be so obvious, then all shafts must actually be flexing/ bending forward, to some degree in this area. This bending/flexing was occurring in the downswing while the shaft was attempting to recover structurally to a straight line. Perhaps no one else had ever given the matter thought and he decided to examine it!
Take a driver with a manufactured genuine loft of (say) 10 degrees, in the real world of shaft tip forward flexing what was it’s effective loft at and through impact after all of this bending had occurred prior to impact? As time passed, Mr. Hogan continued to experiment to determine the various influences on the clubhead/shaft relationship of the traditional shafts being offered in the marketplace.
Mr. Hogan took the approach that science is a wonderful tool, but every law and every rule from every possible aspect of science involved in the specific entity in question must be identified, understood, applied and satisfied before perfection can possibly be considered.
Early Analysis - Gerry Hogan’s interest in shaft function was triggered some forty odd years ago when he first noticed that multiple steel shafts were bent at the point where the shaft tip exited the hosel. Importantly, he observed that virtually all the shafts were bent forward, seldom, if ever, were they bent backwards.
Had the bending been a result of impacting the earth or the ball then the bending would have been backwards, not forwards. Had the bending occurred as a result of impacting a solid mass, such as a tree branch, the bending would have been located at the site of the contact between shaft and branch and it would be rare that this occurred at the junction of hosel and shaft.
The point that struck Mr. Hogan most forcefully at the time was: if so many shafts were permanently bending in such a manner as to be so obvious, then all shafts must actually be flexing/ bending forward, to some degree in this area. This bending/flexing was occurring in the downswing while the shaft was attempting to recover structurally to a straight line. Perhaps no one else had ever given the matter thought and he decided to examine it!
Take a driver with a manufactured genuine loft of (say) 10 degrees, in the real world of shaft tip forward flexing what was it’s effective loft at and through impact after all of this bending had occurred prior to impact? As time passed, Mr. Hogan continued to experiment to determine the various influences on the clubhead/shaft relationship of the traditional shafts being offered in the marketplace.
Mr. Hogan took the approach that science is a wonderful tool, but every law and every rule from every possible aspect of science involved in the specific entity in question must be identified, understood, applied and satisfied before perfection can possibly be considered.
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