| 摘要 |
<p>In a fibre reinforced plastic golf club shaft (1), which has at the bottom an end portion (2) for attaching a club head (3) and at the top an end portion (4) for attaching a grip (5) has a hollow profile, non-constant profile which is symmetrical about a median plane in the longitudinal axis. The flex point (F) of the shaft is in the area between the two end portions (2, 4). The shaft (1) has a cross-sectional configuration such that, starting from the flex point and passing towards each of the two end portions (2, 4), the resisting moment of the cross-sectional surface of the shaft (1) at right angles to the median longitudinal axis (M-M) relative to the axis passing through the median longitudinal axis (M-M) of the shaft and at right angles to the golf club driving direction decreases with increasing distance (x, y) from the flex point (F) to a minimum at the ends. <IMAGE></p> |
