Composite shaft for a golf club

A method for constructing a golf club shaft with a corresponding longitudinal axis and length extending between a tip end and a butt end of the shaft, the method comprising the steps of:

• forming a laminar subassembly of plural angularly biased plies;
• rolling the subassembly onto a mandrel defining an inner contour of the shaft, including a tip end of the mandrel and a butt end of the mandrel corresponding to a tip end of the shaft and a butt end of the shaft;
• positioning a first longitudinal ply substantially shorter than the biased plies, the first longitudinal ply approximately aligned with the tip end of the shaft;
• positioning a second longitudinal ply substantially shorter than the biased plies, the second longitudinal ply approximately aligned with the butt end of the shaft;
• and
• rolling the longitudinal plies onto the subassembly to form a rolled assembly, wherein:
• the plural biased plies contain fibers oriented transverse to a longitudinal axis and extend the length of the shaft;
• the mandrel shares the longitudinal axis of the shaft;
• and
• the longitudinal plies contain fibers oriented parallel to the longitudinal axis and at least partially overlap each other.

A method for constructing a golf club shaft with a corresponding longitudinal axis and length extending between a tip end and a butt end of the shaft, the method comprising:

• forming a laminar subassembly of plural angularly biased plies;
• positioning longitudinal plies substantially shorter than the biased plies onto the subassembly to form a laminar assembly;
• rolling the laminar assembly onto a mandrel to form a shaft;
• wherein:
• the biased plies approximately extend the length of the shaft, and at least partially overlap each other, the biased plies containing fibers oriented at a substantial angle transverse to a longitudinal axis of the shaft;
• and
• the longitudinal plies extend substantially less than the length of the shaft, the longitudinal plies containing fibers oriented approximately parallel to the longitudinal axis of the shaft.

A golf club shaft, comprising:

• two biased plies with pre-impregnated fibers oriented with a bias, the first biased ply with fibers oriented at an angle in the range of approximately 25-degrees to 65-degrees transverse to a longitudinal axis of the shaft and the second biased ply with fibers oriented at an angle in the range of approximately 115-degrees to 155-degrees transverse to the longitudinal axis, both biased plies extending approximately an entire length of the shaft;
• two longitudinal plies with pre-impregnated fibers oriented approximately parallel to the longitudinal axis of the shaft, both longitudinal plies extending substantially less than the entire length of the shaft;
• and
• a butt end reinforcement ply;
• wherein:
• one of the longitudinal plies aligns with a tip end of the shaft and another of the longitudinal plies aligns with a butt end of the shaft;
• one of the longitudinal plies at least partially overlaps the other;
• and
• the butt end reinforcement ply aligns with the butt end of the shaft.