I designed Momentum using a pen and paper. Even though I am proficient in CAD software, I find it crucial to design using my mind without the aid of computers. This allows me to create a prototype and test it using my senses to first analyze the problem before making improvements. In a world of engineers completely dependent on computers, I find that designing with a pen and paper using math is faster and more effective.

The Precision Stabilizer System of Momentum is the key to achieving extremely high rotations per minute. I discovered that spinning with a string is the original method used thousands of years ago so I set out to create a system that achieved the most efficient results. I designed the entire Momentum System in a single 20-minute meditation session. Yet it took me over two months to create the process to machine it.

I personally wrote all CNC programs long-hand at my CNC lathe and machined over one hundred prototypes. The entire Momentum System contains 12 precision machined parts with most tolerances within one thousandth of an inch. I only used CAD software after the final design was complete to document my work with 2D prints and 3D renderings. I have specifically chosen Brass as the material for the Momentum System due to it's mass, physical properties and color. Brass is a premium metal that is 15 times more expensive than aluminum by weight. You deserve the best and I only build the best so Brass is the superior choice.

So what's the secret behind Momentum's record-breaking success? Reducing friction, discovering balance and gaining maximum velocity where my three primary goals.

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Reducing Friction

Incorporating a tiny precision press-fit Silicon Nitride (Si3N4) Ball as the contact point reduces friction to near zero.

Discovering Balance

This required a calculator, some relatively simple math and trial and error. In short, I designed Momentum with 90% of the mass near the circumference thus maximizing centrifugal force.

Maximum Velocity

Achieving maximum velocity required an external apparatus, which is the PSS or Precision Stabilization System. This system incorporates fully enclosed precision micro-ball bearings both in the base and inside the hollow tube of the spinning body. Holding everything in line with the rotating axis allows for maximum acceleration with minimum resistance.

Innovation: The world's first Precision Stabilizer System
Velocity: from 0 to 15,000+ rpm in less than ONE second
Spin Time: 20-minute spins from a 38 gram solid brass design
Hybrid Gyroscope: Acts as a gyroscope while on Axial Stabilizer
Multi-stack: Perform amazing tricks like stacking two or three high

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Momentum is easy to learn yet challenging to master. Just about anyone can achieve a 10 to 15-minute spin at 8,000+ RPM. But what about a 20-minute spin starting at 15,000 RPM?

Let your competitive nature come out with Momentum! Share your best spin times, tips and tricks. We will be adding a survey to this page in the near future allowing everyone to share their results.

You are also welcome to share photos, videos and comments on the Harrelson Momentum Facebook page.

The spinning top dates back to antiquity and is one of the oldest known toys. Early versions were made from wood and sometimes featured an iron tip to improve performance and durability. They most often were set into motion through the use of a pull string. Tops evolved in the 20th century made from plastic and metal. Today, there are numerous high end spinning objects made with modern CNC machinery by dozens of fine artisans and machine shops around the world.

I would like to encourage you to back this Kickstarter project and enjoy the latest innovations found in Momentum. These will surely be added to the history and evolution of this fascinating piece of entertainment. Today, we may ask, "Is a spinning top a toy, a tool or a science experiment?"