The Nunchuk® is the result of over 40 years of research by Australian Gerry Hogan. Gerry authored one of the mostly widely read golf instructional books in Austraila, and has spent 40 years researching human mechanics. Gerry’s breadth of knowledge goes far beyond golf, and is highly regarded for the application of his research in sport.The understanding and conclusions by Gerry Hogan transcends all prior work in the field by a wide margin.
It is much more that than marketing hype. The Nunchuk® was purposefully named after the martial arts device, because of its similarity in design. The Nunchuk® features two rigid end pieces and a softer middle-section. There are multiple mechanical benefits to the Nunchuk®, which is explained further in the science section.
- The Nunchuk® will deliver correct bio/sensory feedback allowing the golfer to correctly swing the handle of the club (where the player’s hands are located), and not the club head itself.
- Reduces spin rates on all woods and hybrids, resulting in less dispersion, and greater roll distance.
- Correctly controls shaft lag, thus stabilizing the head at impact for the golf club’s true loft and face angle.
- No club head “kick” through the ball. Contrary to belief, kick is NOT A BENEFIT to a golf shaft.
- Increased energy transfer to the golf ball, resulting in greater distance.
- Ability to better play in adverse conditions. Players can now “cheat the wind” – by eliminating golf ball ballooning, and distance robbing spin.
- Stability at impact, “Feeling of one-piece” or that the club head and shaft is in harmony with the player. This stability prevents off-center shots from the club face to be much less penal to the golfer.
Due to the unique characteristics of the Nunchuk’s® design, the ball flight golfers achieve is typically one that is consistent with their normal shot trajectory. The Nunchuk® shaft significantly reduces spin on most shots, thus the ball will not up-shoot through flight. On most golf shots, the ball is typically launched at a medium trajectory, sits up to its apex, and then falls to the ground with a bit of roll. Because of the consistency and repeatability in the Nunchuk®, players are better equipped to play specialty shots with various trajectories, You will find the Nunchuk® very easy to get in the air!
The current market of golf shafts is a very confusing world for beginning golfers and PGA Professionals alike. Unfortunately for the golfing public, the other shafts available in the marketplace do not control the clubhead during the golf swing. The marketing hype that suggests clubs with lighter and longer shafts and bigger and heavier heads will improve a golfer’s swing, is simply not consistent with the laws of science and motion. Unlike shafts commonly found in the marketplace, the Nunchuk® does not attempt to “kick” the shaft into the ball. Instead, the Nunchuk® stabilizes the clubhead allowing the player, the shaft, and the clubface to be in total harmony throughout the swing.
Yes, think about the difference in swinging a baseball bat with a clubhead attached to the end versus swinging a fishing rod with a clubhead attached. I think you will agree that you will hit it more solidly, much more often with the bat versus the rod. While the Nunchuk® has obvious differences from a bat, it will reliably return the club head to the ball, giving the golfer greater confidence.
Simply, YES! Regardless of age, skill level, and physical strength, the Nunchuk® shafts will be able to fit any player’s game.
Perhaps the better question should be, “What are you waiting for?” Consider these facts:
- The more flex that a shaft has the more difficult it is to repeatedly return the face of the club head to a square or controlled position at impact.
- The more twist or torque the shaft possesses the more difficult. (As above)
- The more flex and twist, the more droop the shaft will experience while in motion.
- The greater the club head (mass) is offset to the axis of the shaft the greater the effects of twist, torque and droop.
- The further from the axis of the shaft a mass is located, the greater the potential for twist and torque.
- It is in direct contradiction with Newton’s Laws of Motion that a useable or useful energy form can be stored in the shaft that can be released at such a time to further accelerate the club head into impact.
- The lighter the shaft becomes, the heavier the head must become to compensate for the deadweight ‘feel’ of the golf club.
- The lighter the shaft becomes, the heavier the head must become to maintain a constant under the principles of swing weight balancing. The heavier the head weight feel to the golfer, the more they will be induced to swing the head of the club and not the club itself. The more they do this, the more they will suffer the consequences of Newton’s Laws.
- The more flex, twist, droop and excessive head feel the golf club has, the more difficult it becomes to master.
A simple conclusion can be made from these series of facts: Most golfers have not made a genuine golf swing, all they can do is to continuously attempt to both consciously and subconsciously compensate for the deficiencies in the equipment they are forced to use… Here is an easy solution: Why not just put some Nunchuk’s® in your bag?
The Nunchuk® can deliver consistency and repeatability that has never been offered in the shaft market. On average, the head of a driver with conventional shaft technology will decelerate approximately 20%-22% under the stresses of impact. It must be remembered that Newton’s Third Law (For every reaction, there is an equal and opposite reaction) applies here.
The club head must instantaneously decelerate under the shock of impact but, remember there is another powerful force at work too! The golf ball compresses quite markedly and stores high levels of energy, close to 2,000 pounds of force. While this energy is trying to push the ball forward and away from the clubface, it is equally and in the opposite direction trying to push the clubface away from the golf ball.
The Nunchuk® shaft reacts very differently to support the clubhead through impact resulting in clubhead deceleration that is closer to 10%. Importantly, the distance that the ball will travel is not a response to the speed that the club head is traveling during the commencement of impact; it is the speed that the head has decelerated to at the commencement of separation that matters most.
The best advice is to work with a club fitter that can build the club to your desired swing-weight, typically D-1 to D-3. For clubheads in the market place, this generally means that driver should be built to approximately 44.5” to achieve most desired swing-weights.
Unlike most golf shafts which require trimming of the shaft from the tip to achieve the required degree of stiffness, the Nunchuk’s® unique design does not require any tip trimming. An integral part of the shaft design includes a specialized tip section, which should be not be trimmed to fit a driver, fairway wood, or a hybrid.
- No tip trimming required or suggested for drivers, fairway woods, or hybrids..
- If installing in a club with either a .350 or .370 hosel, use appropriate sleeve or shim. (Standard shim for .350″ hosel and oversized shim for .370″ hosel)
- Use enough epoxy to properly coat the shaft and hosel bore, but don’t overdo it (because the shaft wall thickness is larger than most shafts, there is a smaller hollow area for excess epoxy to fill).
- If using long-cure epoxy, some club builders have found it useful to mask-off the hosel of the club to avoid having any excess epoxy adhere to the exterior of the club.
- Butt trim to desired length. For drivers,we believe you will get optimum performance if you trim the finished length to 44 to 44.5 inches.
Yes, the shaft does marginally weight more than most conventional golf shafts….and that is a good thing. If you have the clubs built as described above it will feel great and perform exceedingly well. Weight has been strategically positioned throughout the shaft to achieve the amazing results and consistency users of the Nunchuk® experience.
The reason the same shaft can work for players of all abilities and sexes, is due to the inherited design and premise of the invention. The intent of the shaft is to not “kick” the head of the club at the ball through impact. Rather, it’s designed to keep the head of the club, the shaft, and the player’s hands all in a straight line configuration through the ball. The feeling the golfer receives is that of great stability. More importantly, however, is the feedback the shaft offers the golfer is critically important. The golfer no longer has to make compensations in their swing to correct inadequacies caused by equipment.
Absolutely NOT! Time and time again, golfers of all level have remarked that with the Nunchuk® in their hands, they feel confident to swing away. They get better contact with the ball that leaves the club head with less spin for a penetrating ball flight, producing great distance.
One of the biggest fallacies is the presumption that a longer shaft will always produce a greater distance. Most PGA Tour professionals do not play with drivers that exceed 45” in length, yet are able to consistently average nearly 290 yards off the tee. There is a tradeoff and a definitive relationship between length and overall control. When introducing large club heads (460 CC), and lengthened shafts, it meant greater variability in the ability to consistently return the club head to impact.
The longer the radius, the greater the effort required to move the load on the other end. The greater the load, the greater the energy required to shift it on the end of the radial accelerator. The greater the load and the further it lies from the energy source, the more centrifugal forces are created, thus pull the arms and hands of a golfer outwards from the center. When this happens, it will cause balance issues, among other problems in the golf swing.
Ever watch a ballerina or an ice skater performing a pirouette? Notice that the more they ‘pull themselves together’ into a single axial rotation, the faster they turn? You can easily observe how much faster they rotate when their hands and arms are held in to their body, than when their arms are separated at their sides. In essence, rotational speed can be created by holding the hands and arms in close proximity to the source of the energy.
A golf swing can only be a rotation, by our very genetic design. Why is the human golfer exempt from the Laws and Rules of science? The more the golfer’s masses are congregated inwards towards the center of rotation, the faster the potential rotation and also the less dramatic the effects it has on the involuntary balance mechanisms.
In virtually every other sporting endeavor that striking implements are used, stiffness (stability) is paramount, and has been for some time. How much flex, twist and droop are built into baseball bats and cricket bats? If flex and recovery could further accelerate the striking face wouldn’t that be designed into them? In fact, the opposite is the truth.
Also consider tennis and squash rackets. Are these sporting implements made with enhanced flex? Certainly not! Fibers such as Kevlar and high modulus graphite are used to enhance stiffness.
Taking it a step outside the sporting arena, what about hammers and axes, where the velocity of the head masses involved IS THE critical factor? Anyone who is familiar with using these tools would clearly tell you that flexing, twisting or drooping in an axe or hammer handles would cause critical loss of control and striking accuracy! But isn’t precise control and repeatability the most critical factor of all with golf clubs?
If flexing and twisting in golf shafts offers no mechanical advantage to the performance or end result, then why deliberately and knowingly build it into the technology in the first place? It can be proven, beyond all possible doubt, that such equipment only can be an impediment to the success, and provide no mechanical advantage whatsoever.
Shaft flex most commonly references the ability of a golf shaft to bend as forces are applied to it during the swing. Forces can be applied in a number of ways, and is typically measured by the swing speed, or the characteristics of your golf swing.
When a shaft is accelerated in the golf swing it causes most shafts to flex, twist, and droop. When the club head droops throughout a golfer’s swing, it will cause the player to misalign the club face as it returns to impact. In golf, to maximize your shot making and performance, the face of the club must be square at impact.
Today’s golf market is saturated with shafts that have a variety of flex characteristics and bend profiles. Unfortunately, there is not much uniformity in the shaft market with the amount of flex for each configuration. In essence, one manufacturer’s definition of a stiff or regular flex may be vastly different than another. However, it is most common to associate shaft flex with swing speed.
The main difference WHERE the shaft is bending or flexing. The only possible ‘flex point’ of the Nunchuk® is in thecentral area or the shaft. The other two extremities of the shaft, the butt and the tip, are designed to be very rigid to prevent droop, flex and twist in the lever arms.
The unique configuration and patented design of the Nunchuk® allows it to function similar to flail. The two-lever flail has been around for hundreds of years, and is a highly successful tool that is the basis for multiple functions, such in martial arts with the nunchaku.
The nunchaku has often been described as a perfect martial arts weapon. The same mechanical principle in these mechanical tools has been used to develop the Nunchuk series of golf shafts. The primary intention is to eliminate as much of the three danger elements (ie; droop, flex and twist) from both of the lever arms.
It has always been held that golf shafts contain a “kick point” where additional club head acceleration is/can be achieved if the golfer can ‘time’ this mystical/ magical release point. Unfortunately, physics explicitly tells us that this notion is pretty much on a par with the tooth fairy and Santa Claus.
If shaft kick were possible, what values would it offer? Contrary to common belief, absolutely none! Is it physically possible to “time anything” with your golf swing? No, and here is why: Nerve travel time is well understood. It takes TIME that can be measured for sensory nerve feedback (feel) to travel from hands to brain. You therefore cannot ”feel” where your hands ARE when in motion, you can only ”feel” where your hands WERE. In essence therefore it’s quite impossible to know precisely where the clubhead IS at any point.
Even if the shaft can/could store a useful energy form by flexing backwards then any such energy must be applied against a resistance that is both equal and opposite. If the head end is to be accelerated than the butt end (where the golfer’s hands are located and grips the club) must be decelerated!
Consider this: Having the bottom half of the club accelerate while the upper half decelerates, is that truly in the best interest of the golfer?
First, we must take a step back and carefully examine the how a golf shaft works. The shaft physically attaches the hands of the golfer to the club head he or she is about to accelerate at the greatest possible speed. When a golfer sets up to the golf ball, the golfer creates a mechanical association between the hands and the clubface, via the shaft. The golf also creates a mechanical, visual and psychological association between themselves and the clubface, via the hands/arms.
It is widely accepted that during the sequence of a downswing a golf shaft will undergo the following physical changes:
Flexing (back and forth)
All of these variables can quite dramatically effect the association between the hands and the alignment of the clubface, and vice versa, clubface and the golfer.
During the course of the average golf swing the club head/clubface is rotated through about 110-120 degrees and must be rotated back to the same degree if the face is to be squared at impact. Even if the player does successfully rotate the hands perfectly, a golf shaft that is the twisting, flexing, and drooping, may return the head/clubface by a very different margin completely.
Consequently, the golfer can make the perfect set of movements, but then only to see the ball go sideways. The battle then becomes what does the golfer blame and what do they change next? Is it the golf club or their golf swing?
With all the possible variability in golf shafts, consider the task of the golfer:
- A golfer must bring the clubface back to an alignment tolerance of no more than 3 to 4 degrees from where their intended target line.
- A golfer must ALSO return the club on the correct path relative to that of the clubface alignment tolerance.
- To maximize energy transfer, they must also be able to bring the center of the clubface into collision with the golf ball.
Certainly, the greater the droop, twisting and flexing within the shaft, can diminish a golfer’s ability to achieve these goals. Thus, it introduces a greater opportunity for an errant shot.
Unfortunately, the average golfer is induced to purchasing clubs with the greatest droop, twist and flex deliberately built in by design. Naturally, the average player has less capability of mastering these variables!
If exceptionally gifted professional players on the various world tours would shudder at the thought of having to play for a living with clubs built for the average golfer, how can it be that vastly less talented golfers are expected to use and master such equipment? If the very best cannot use it, how can we expect the rest of the world to be able to?
The Nunchuk’s® unique patented design eliminates such variability in the golf shaft from occurring throughout the swing. The result is a golf club that is unison with the player, and provides the appropriate sensory feedback to deliver repeatability and player confidence.