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The Scientific Premises of Shotmaker

Even though Shotmaker has been on the market for one and half year and have accumulated 5 Tour top 10 under its belt, there is still a general lack of understanding as to how Shotmaker works to eliminate S Wave and wobbling clubhead.  It is widely known that wobbling clubhead is a major cause of inaccuracy, but most common reaction to this problem is that clubhead needs to be stabilized.  Not realizing that as a metal object, clubhead by itself is incapable of wobbling.  Even if we shake the clubhead as hard as we can, the clubhead simply does not wobble.

It is golf shaft that wobbles, not club head  

The next question is what causes golf shaft to wobble.  It is the vibration wave generated by golfer’s downswing that causes the shaft to wobble.  If we hold an 18” ruler in our hand and whip it, we will see the ruler bends into an S shape.  The S shape is the vibration wave produced by the whipping motion, and the vibration wave is commonly called S Wave.   

bridge-001_325_01Shaft wobbling is S Wave in action

When agitated, all long objects will have S Wave.  It could be a long bridge, like the famous TacomaBridge(Video) in Washington that collapsed in high wind, a long metal pipe, or a golf shaft.

 

 

S Wave is present for every golf shaft  

Regardless of how much you pay for your golf shaft or how stiff it is, when swung, S Wave will always be present.  It is how Mother Nature works.  

Only a foreign object can stop S Wave dsc_0672_a-001_1200_01

The only way to stop the S Wave is through a foreign object, not unlike the 660 ton earthquake damper inside a high-rise, the giant metal ball hung at the top floor of famous high-rise Taipe 101(Video), is just one example.

Shotmaker inside the shaft is the only remedy 

The presence of the Shotmaker inside the golf shaft makes it impossible for S Wave to manifest itself and impossible for golf shaft to wobble.   Some thought it will take an insert that goes the entire length of the golf shaft to kill the S Wave.  By looking at the illustration below, we can see right away that is not necessary. 

 

s_wave_illustration_1378_01  

Stopping ½ the S Wave kills the entire wave 

If we kill half of the S wave, we automatically kill the other half.  In fact, if the insert is positioned strategically, an insert slightly longer than 3/8 of the wavelength will be enough to kill the entire S Wave.  That is how Shotmake works.

Shotmaker does not increase stiffness 

One of the most frequently asked question is will Shotmaker increase the stiffness of the golf shaft, and the answer is no.  If you have a Shotmaker in your hand, squeeze it very lightly with two fingers and you will notice that the insert wall is not rigid.  It gives when you squeeze it.  During golf swing, the golf shaft actually bends and twists around the insert. Essentially, the insert free floats inside the golf shaft. If the insert is rigid or it is bonded to the inside of the shaft, then it will increase the stiffness and lower the launch angle, but that is not the case for the Shotmaker.  If you test the frequency of the golf shaft with the insert in it, the shaft may appear to be stiffer, but during down swing, force of the swing more than over powers the insert. Therefore, there is no change to the launch angle.

Shotmaker does not change playability of the club 

Shotmaker does one thing only.  It kills shaft wobble as to improve accuracy up to 40 %.  It is locked inside the golf shaft at one point only, 1 mm wide.  The rest of the insert free floats.  It has no impact on shaft torque, and it does not alter playability of the golf shaft.