GOLF-CLUB-SHAFT

摘要

A set of golf club shafts that are produced wherein the torsional stiffness of each shaft within the set as a function of its length, be within 5% of a straight line having a gradient lying between zero and a positive value. Each shaft of the set of golf club shafts is formed of a desired length with the outer diameter and thickness of each shaft being varied throughout its length from the large diameter hand gripping end portion through the central stepped portion to the small diameter end or head portion. The clubs of a set are fabricated to the required torsional stiffness with the clubs of a set matched with regard to torsional stiffness.