Abstract: To obtain a golf club and a connecting member for a golf club shaft and a golf club head that can provide a flexibility in choice of reshafting to a user regardless of types of the golf club shaft and the golf club head and that can also provide excellent strength and/or appearance. A connecting member connects an inner-hosel-type golf club shaft and an over-hosel-type golf club head. The connecting member includes a hybrid structure combining different kinds of material.

Abstract: Provided are the golf club shaft and the golf club for offering excellent feel of swing motions without demanding fine setting while keeping advantages of the short-sized golf club shaft. The golf club shaft includes a shaft body which extends in a longitudinal direction, and a gravity center shifting member attached to the shaft body for shifting a shaft gravity center toward a distal-end side in the longitudinal direction. In the case where the shaft body is cut to have a shaft full length of 43 inches or shorter, and positions of a distal-end portion and a proximal-end portion in the longitudinal direction are defined by percentage as 0% and 100%, respectively, a position of the shaft gravity center is set to be in a range from 39% to 45%.

Abstract: To obtain a golf club and a combining member of a golf club shaft and a golf club head that can provide a flexibility in choice of reshafting to a user regardless of types of the golf club shaft and the golf club head. A golf club includes an inner-hosel-type golf club shaft, an over-hosel-type golf club head, and a combining member that combines the inner-hosel-type golf club shaft with the over-hosel-type golf club head.

Abstract: To obtain a golf club and a combining member of a golf club shaft and a golf club head that can provide a flexibility in choice of reshafting to a user regardless of types of the golf club shaft and the golf club head. A golf club includes an inner-hosel-type golf club shaft, an over-hosel-type golf club head, and a combining member that combines the inner-hosel-type golf club shaft with the over-hosel-type golf club head.

Abstract: To obtain a golf club and a connecting member for a golf dub shaft and a golf club head that can provide a flexibility in choice of reshafting to a user regardless of types of the golf club shaft and the golf club head and that can also provide excellent strength and/or appearance. A connecting member connects an inner-hosel-type golf dub shaft and an over-hosel-type golf club head. The connecting member includes a hybrid structure combining different kinds of material.

Abstract: To obtain a golf club and a combining member of a golf club shaft and a golf club head that can provide a flexibility in choice of reshafting to a user regardless of types of the golf club shaft and the golf club head. A golf club includes an inner-hosel-type golf club shaft, an over-hosel-type golf club head, and a combining member that combines the inner-hosel-type golf club shaft with the over-hosel-type golf club head.

Abstract: A metal foil satisfies following conditional equations (1), (2) and (3) to smoothly increase rigidity in the longitudinal direction of the shaft main body from a distal end side to a base end side while increasing a weight of a wound part of the metal foil 0.50<Lmf/Ls ??(1) Lmr/Ls<0.90 ??(2) 0.03<Wm/Ws<0.09 ??(3) where Lmf: a length from a distal end position in the longitudinal direction of the shaft main body to a winding start position of the metal foil, Lmr: a length from the distal end position in the longitudinal direction of the shaft main body to a winding end position of the metal foil, Ls: a length of the shaft main body, Wm: a weight of the metal foil, and Ws: a weight of the shaft main body.

Abstract: A metal foil satisfies following conditional equations (1), (2) and (3) to smoothly increase rigidity in the longitudinal direction of the shaft main body from a distal end side to a base end side while increasing a weight of a wound part of the metal foil 0.50<Lmf/Ls??(1) Lmr/Ls<0.90??(2) 0.03<Wm/Ws<0.09??(3) where Lmf: a length from a distal end position in the longitudinal direction of the shaft main body to a winding start position of the metal foil, Lmr: a length from the distal end position in the longitudinal direction of the shaft main body to a winding end position of the metal foil, Ls: a length of the shaft main body, Wm: a weight of the metal foil, and Ws: a weight of the shaft main body.

Abstract: A metal foil satisfies following conditional equations (1), (2) and (3) to smoothly increase rigidity in the longitudinal direction of the shaft main body from a distal end side to a base end side while increasing a weight of a wound part of the metal foil 0.50<Lmf/Ls ??(1) Lmr/Ls<0.90 ??(2) 0.03<Wm/Ws<0.09 ??(3) where Lmf: a length from a distal end position in the longitudinal direction of the shaft main body to a winding start position of the metal foil, Lmr: a length from the distal end position in the longitudinal direction of the shaft main body to a winding end position of the metal foil, Ls: a length of the shaft main body, Wm: a weight of the metal foil, and Ws: a weight of the shaft main body.

Abstract: A golf club shaft and a golf club using such a golf club shaft are achieved, wherein the golf club shaft is capable of suppressing variations of various parameters at impact by reducing the difference in rigidity between the layers of the shaft body. The golf club shaft includes full-length bias prepregs provided only as a plurality of pairs thereof and as full-length layers that extend over an entire length of the shaft body, wherein fiber directions of each pair of the full-length bias prepregs are inclined at an angle within a range of 22 degrees through 28 degrees relative to a longitudinal direction of the shaft body, respectively.

Abstract: A golf club shaft and a golf club using such a golf club shaft are achieved, wherein the golf club shaft is capable of suppressing variations of various parameters at impact by reducing the difference in rigidity between the layers of the shaft body. The golf club shaft includes full-length bias prepregs provided only as a plurality of pairs thereof and as full-length layers that extend over an entire length of the shaft body, wherein fiber directions of each pair of the full-length bias prepregs are inclined at an angle within a range of 22 degrees through 28 degrees relative to a longitudinal direction of the shaft body, respectively.

Abstract: A golf club shaft formed by winding prepregs, made of reinforced fibers impregnated with a thermosetting resin, into layers and thermally curing the prepregs. The golf club shaft includes a 90-degree prepreg, a fiber direction of which is orthogonal to a longitudinal direction of the golf club shaft and which is provided on each of an inner layer side and an outer layer side, and the golf club shaft satisfies the following condition: 2.0?D2/D1?4.0, wherein D1 designates a thickness of the inner-layer-side 90-degree prepreg, and D2 designates a thickness of the outer-layer-side 90-degree prepreg.

Abstract: A golf club set having a stable swing feel for the player is obtained regardless of the club number. Moments of inertia of the grips of respective the golf clubs are substantially uniform regardless of the respective golf club numbers. Moments of inertia of the heads of respective the golf clubs decrease as the respective golf club numbers increase. Moments of inertia of the shafts of respective golf clubs increase as the numbers of respective golf clubs increase. Moments of inertia of the golf clubs are made substantially the same by cancelling out the decrease in moments of inertia of the heads and the increase in moments of inertia of the shafts. The shafts of the golf clubs increase in weight, and respective gravity center locations of the shafts are located closer to the tip ends of the shafts, as the numbers of the golf clubs increase.

Abstract: A golf club shaft formed by winding prepregs, made of reinforced fibers impregnated with a thermosetting resin, into layers and thermally curing the prepregs. The golf club shaft includes a 90-degree prepreg, a fiber direction of which is orthogonal to a longitudinal direction of the golf club shaft and which is provided on each of an inner layer side and an outer layer side, and the golf club shaft satisfies the following condition: 2.0?D2/D1?4.0, wherein D1 designates a thickness of the inner-layer-side 90-degree prepreg, and D2 designates a thickness of the outer-layer-side 90-degree prepreg.

Abstract: An object is to achieve a golf club shaft and a method of producing the same, wherein the weight balance in the shaft longitudinal direction can be reproducibly and easily set and wherein the golf club shaft is produced at a low cost and has high durability. The golf club shaft includes a hollow-cylindrical shaft body made of fiber-reinforced resin and a weight-adding cylinder installed in a cylindrical space of the shaft body. At least a part of an outer diameter side of the weight-adding cylinder is embedded in an cylindrical embedded recess that is formed in an inner wall of the shaft body, wherein a grip-side cylindrical end surface of the weight-adding cylinder and a grip-side cylindrical end surface of the cylindrical embedded recess are in contact with each other.

Abstract: An object is to achieve a golf club shaft and a method of producing the same, wherein the weight balance in the shaft longitudinal direction can be reproducibly and easily set and wherein the golf club shaft is produced at a low cost and has high durability. The golf club shaft includes a hollow-cylindrical shaft body made of fiber-reinforced resin and a weight-adding cylinder installed in a cylindrical space of the shaft body. At least a part of an outer diameter side of the weight-adding cylinder is embedded in an cylindrical embedded recess that is formed in an inner wall of the shaft body, wherein a grip-side cylindrical end surface of the weight-adding cylinder and a grip-side cylindrical end surface of the cylindrical embedded recess are in contact with each other.

Abstract: A golf club shaft is provided in which the flexural rigidity of the distal end portion can be improved with no change in flexural rigidity on the proximal end while the dispersion in the values of the flexural rigidity in the circumferential direction can be reduced without the use of a distal-end reinforcing layer that causes discontinuous points in the lengthwise direction in flexural rigidity.

Abstract: A golf club shaft is provided in which the flexural rigidity of the distal end portion can be improved with no change in flexural rigidity on the proximal end while the dispersion in the values of the flexural rigidity in the circumferential direction can be reduced without the use of a distal-end reinforcing layer that causes discontinuous points in the lengthwise direction in flexural rigidity.