Golf club set

Abstract

A golf club set having a stable swing feel for the player is obtained regardless of the club number. Moments of inertia of the grips of respective the golf clubs are substantially uniform regardless of the respective golf club numbers. Moments of inertia of the heads of respective the golf clubs decrease as the respective golf club numbers increase. Moments of inertia of the shafts of respective golf clubs increase as the numbers of respective golf clubs increase. Moments of inertia of the golf clubs are made substantially the same by cancelling out the decrease in moments of inertia of the heads and the increase in moments of inertia of the shafts. The shafts of the golf clubs increase in weight, and respective gravity center locations of the shafts are located closer to the tip ends of the shafts, as the numbers of the golf clubs increase.

What is claimed is: 
     
         1 . A golf club set comprising different numbered golf clubs, each of which is constructed by fixing a head and a grip to a tip end and a butt end of a shaft, respectively,
 wherein moments of inertia of said grips of respective said golf clubs are substantially uniform regardless of said numbers of respective said golf clubs;   wherein moments of inertia of said heads of respective said golf clubs decrease as said numbers of respective said golf clubs increase;   wherein moments of inertia of said shafts of respective said golf clubs increase as said numbers of respective said golf clubs increase;   wherein moments of inertia of said golf clubs are made substantially the same by cancelling out the decrease in said moments of inertia of said heads and the increase in said moments of inertia of said shafts; and   wherein said shafts of said golf clubs increase in weight, and respective gravity center locations of said shafts are located closer to said tip ends of said shafts, as said numbers of said golf clubs increase.   
     
     
         2 . The golf club set according to  claim 1 , wherein, when one golf club is selected as a reference golf club from said golf clubs of said golf club set, said reference golf club and any one of remaining golf clubs of said golf club set satisfy the following condition (1):
   0.995X<Y<1.005X  (1)
   wherein X designates a club moment of inertia (MOI[kg/cm 2 ]) of said reference golf club, and   Y designates a club moment of inertia (MOI[kg/cm 2 ]) of any one of said remaining golf clubs.   
     
     
         3 . The golf club set according to  claim 1 , wherein at least a portion of each said golf clubs of said golf club set comprises, on said tip end side of said shaft, one or both of a metal cylinder and a metal foil which increase in weight as said numbers increase. 
     
     
         4 . The golf club set according to  claim 1 , wherein said golf clubs of said golf club set comprise at least six irons ranging from a 5-iron through to a 10-iron. 
     
     
         5 . The golf club set according to  claim 2 , wherein at least a portion of each said golf clubs of said golf club set comprises, on said tip end side of said shaft, one or both of a metal cylinder and a metal foil which increase in weight as said numbers increase. 
     
     
         6 . The golf club set according to  claim 2 , wherein said golf clubs of said golf club set comprise at least six irons ranging from a 5-iron through to a 10-iron. 
     
     
         7 . The golf club set according to  claim 3 , wherein said golf clubs of said golf club set comprise at least six irons ranging from a 5-iron through to a 10-iron.