Golf club

摘要

A club length L1 of a golf club 2 is equal to or greater than 43 inches and equal to or less than 48 inches. A ratio Iss/Ix is equal to or greater than 0.070 and equal to or less than 0.100. A club inertia moment Ix about a swing axis is equal to or less than 6.90×103 (kg·cm2). The inertia moment Ix (kg·cm2) is calculated by the following formula (1). The shaft inertia moment Iss (kg·cm2) is calculated by the following formula (2).
Ix=Wc×(Lc+60)2+Ic  (1)Iss=Ws×(Ls+60)2+Is  (2)

主权项

1. A golf club comprising:
a head, a shaft, and a grip, wherein: a club length is equal to or greater than 43 inches and equal to or less than 48 inches; if a shaft inertia moment about a swing axis is defined as Iss (kg·cm2) and a club inertia moment about the swing axis is defined as Ix (kg·cm2), a ratio Iss/Ix is equal to or greater than 0.070 and equal to or less than 0.100, and the club inertia moment Ix is equal to or less than 6.90×103 (kg·cm2); and the inertia moment Ix is calculated by Equation (1), and the inertia moment Iss is calculated by Equation (2):
Ix=Wc×(Lc+60)2+Ic  (1)Iss=Ws×(Ls+60)2+Is  (2) if a club weight is defined as Wc (kg), an axial direction distance from a grip end to a center of gravity of a club is defined as Lc (cm), a club inertia moment about a center of gravity of the club is defined as Ic (kg·cm2), a shaft weight is defined as Ws (kg), an axial direction distance from the grip end to a center of gravity of the shaft is defined as Ls (cm), and a shaft inertia moment about the center of gravity of the shaft is defined as Is (kg·cm2).