| 摘要 |
A dynamically correlated, matched set of golf clubs which comprises a plurality of golf clubs each of which has a shaft having one end with a grip and the other end with a head, wherein each grip has a substantially uniform weight, moments of force at the head end sides of said golf clubs are standardized with reference to a substantially central portion between both hands of a golf player who holds the golf club during swing about a rotating axis, and when natural frequencies at the club head end side of said golf clubs in said set are measured with reference to said central portion as a support end so that natural frequencies of arbitrary clubs A and B are given as Fa and Fb and lengths from the support end to the centers of gravity extending from the support ends to head ends of said clubs are given as La and Lb, each shaft has a stiffness characteristic satisfying a substantial relation FaxLa=FbxLb.
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