Patent ID: 8944932
Filing Date: 2015-02-03
Classification: A63B

Abstract:
1. A golf club shaft selecting system comprising: a swing analyzer capable of outputting information that can be used for analyzing a swing of a user, comprising: wherein, assuming that said swing member is in circular motion during a swing, said calculating unit calculates a virtual speed at said portion based on the distance between said first and second acceleration sensors and calculates the actual speed of said portion utilizing said virtual speed; wherein said calculating unit calculates the actual speed of said portion by correcting said virtual speed at the time of measurement with predetermined speed correction data stored in said calculating unit; wherein the predetermined speed correction data is based on an actual measured value from a secondary measuring device; wherein said calculating unit calculates an amount of deflection of said swing member based on an output from said strain gauge; wherein said calculating unit stores in advance correction data for approximating said actual speed from said virtual speed based on predetermined data from the secondary measuring device; and wherein said selecting system selects a golf club shaft based on the actual speed of said portion and the amount of deflection of said swing member.