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Know-How Categories
• Center of Gravity
• Moment of Inertia
• Product of Inertia
• Instrument Selection
• Glossary
• UAVs
• Golf

MOI questions
• Why Measure MOI?
• Principle of operation of an MOI instrument
• Torsion pendulum theory
• Finding MOI through CG without knowing the CG location

MOI of golf club heads
• Comply with the USGA ruling on MOI
• Use an XR10 to measure MOI
• Optimize club head design

MOI instruments
• All MOI instruments
• GB Series (MOI of large parts)
• XR Series (MOI of mid size parts)
• XKR Series (MOI of small parts)
• KSR Series (MOI and CG)
• MP Series (MOI, CG and weight)
• POI Series (POI, MOI and CG)


WHY USE AN XR10 TO MEASURE THE MOMENT OF INERTIA OF GOLF CLUBHEADS

Space Electronics' XR10 moment of inertia measurement instrument is dedicated to measuring moment of inertia of clubheads through their center of gravity. It offers several unique features.

1. An automated sequence guides the operator through the same procedure the USGA uses

The method used by the United States Golf Association to measure the moment of inertia of a clubhead through its center of gravity is rather complex. It involves 6 different moment of inertia measurements of the clubhead. Each measurement requires a tare measurement (i.e. a measurement with the fixture only used to calibrate the measurement with the clubhead). In total, it is a 12 step measurement process, followed by a mathematical regression analysis.

Our XR10 instrument is the only moment of inertia instrument that automates the measurement sequence. It connects to a Windows operated computer and comes with measurement software that guides the operator through the 12 step measurement process. It also performs the regression analysis and gives the final MOI result directly (see next section).

2. The output shows directly the moment of inertia of the clubhead through its center of gravity

Measuring a moment of inertia is fairly simple. Making 12 measurements in the right order is a little more complicated although still manageable. But once all 12 measurements are recorded, you are only half way through the process. From your 12 moment of inertia measurements, how do you determine the moment of inertia of the clubhead through its center of gravity?

The answer is: you need to perform an iterative regression analysis using the least squares method described by the USGA. In other terms you need to solve a matrices equation. Fortunately our measurement software includes this feature. The result is a direct value of the moment of inertia through the center of gravity of the clubhead. The XR10 is the only instrument in the world to offer this feature.

3. The most accurate instrument for moment of inertia measurement of golf clubheads

Space Electronics is the only company in the world that manufactures a moment of inertia measurement instrument with 0.25% accuracy. This superior accuracy makes it the best instrument to measure a club MOI against the USGA limitation.

4. Work in your own units

The measurement software can generate results both in metric or imperial units. You can choose from a variety of commonly used moment of inertia units or you can customize the software with your own units.

For technical specifications of our XR10 moment of inertia instrument please refer to our XR Series page. To request a quotation for instrument please use the "Request a quote" link located on the upper right corner of this webpage and mention your interest in an XR10 in the "specific request" box.



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Space Electronics LLC - 81 Fuller Way - Berlin, CT 06037 (USA) - Phone: +1 860 829 0001 - Fax: +1 860 829 0005 - Email: sales@space-electronics.com