| 摘要 |
PURPOSE: A golf club shaft is provided to implement head speed and ease swing of a shaft by keeping over 0.5 the rate which the length from the end of a tip to the center of gravity of the shaft is divided by the total length of the shaft. CONSTITUTION: The total length of a shaft is Ls. The distance from the tip end(Tp) to the center of gravity of the shaft is Lg. In the point of view of head speed and easy swing, the rate of Lg/Ls is more than 0.52. In the point of view of shaft strength, the rate of Lg/Ls is less than 0.65. In the point of view of head speed, shaft weight is less than 60 g. In the point of view of shaft intensity, shaft weight is more than 30 g. |
