| 摘要 |
<p>PROBLEM TO BE SOLVED: To make obtainable face correcting effect by assembling a shaft onto a head setting a shaft circumferential direction reference position on a position except for a specific angle range centering on the back side reference position corresponding to a head advancing type, head delaying type, slicer, and hooker. SOLUTION: A shaft is assembled on a head setting the circumferential direction reference position within a range except for positions at 0 deg.,±90 deg., and 180 deg. making the back side reference position as 0 deg. corresponding to a head advancing type, head delaying type, slicer, hooker. That is, the shaft is assembled with a head matching a point to the plus side or the minus side from the back side reference position corresponding to the type at impact. Matching characteristics of a golfer like this, the shaft is assembled with the head to efficiently obtain the face correcting effect.</p> |
