Golf-club shafts having selectable-stiffness tip regions, and golf clubs comprising same

摘要: The subject golf clubs have a shaft and clubhead. has tip-end coupled to the clubhead, butt-end, reduced-EI portion located adjacent tip-end, remaining extending between butt-end portion. portions are together at an interface. exhibits respective rate of stiffness reduction as function distance from butt-end. is typically shorter than less (which can be zero) toward tip-end. These rates similar or different. interface exhibit greater in other portions.