| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a golf club stabilizing the behavior of a shaft and a head in swinging and having a superior hit ball directivity. <P>SOLUTION: This golf club is attached with the head 2 in one side of the shaft 1 and a grip in the other end side of the shaft 1. A product GI×MI of an inertia moment MI of the head 2 around the shaft axis (i) and a torsional rigidity GI of the shaft 1 measured in a range from an attachment side end 1a of the shaft 1 to the head 2, at least, to the length of 1/3 of the shaft whole length is set to not less than 2.5×10<SP>9</SP>and not more than 1.8×10<SP>10</SP>. <P>COPYRIGHT: (C)2004,JPO</p> |
