Abstract
Golf clubs are often evaluated by many methods to determine their performance. For drivers in particular, the primary performance indicator is ball speed, which is directly related to distance. Golf club manufacturers make many claims about how extra ball speed is achieved. For example, these may include: design features, face thickness, materials, center of gravity location, and moments of inertia. This paper proposes a new method to evaluate the performance of golf clubs from a single metric. With the benefits of modern launch monitors, accurate impact location data can be captured very efficiently. Using this, along with COR (coefficient of restitution) map testing, the Expected Value of COR can be calculated for a golfer or population of golfers. The “Expected COR” metric takes into account many engineering properties of a particular club that affect ball speed, along with the impact variation of the golfer, to give a single score for rating.
Highlights
Golf manufacturers have achieved significant gains in club and ball performance over the past few decades
COR Maps for each of these drivers were created using the method outlined by the USGA, with a total of 41 measurement locations
The Expected COR metric can be used in a variety of ways
Summary
Golf manufacturers have achieved significant gains in club and ball performance over the past few decades. The primary indicator for this is distance. On the PGA Tour, average driving distance has increased approximately 30 yards from 1980 to 2016 [1]. Amateur golfers have seen an average distance gain of 10 yards from 1996 to 2016. From 2006 to 2016, the average drive has increased 2 yards on the PGA tour and has not changed at all for the amateur golfer
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