Abstract: Hollow wall curable and cured composite tubes for improving performance in sports shafts, lightweight applications, and lightweight structural members, are described herein and include: a constituent tube, for forming the hollow wall composite tube, that comprises an evacuable flexible core component on which to wind or braid filaments or fabric, and at least one braid filament or at least one fabric for providing a reinforcing fiber matrix for saturation with an epoxy material, spirally wrapped, applied or braided on the flexible core component. Methods for producing and using the same are also disclosed herein.

Abstract: A hollow wall composite tube for improving performance in sports shafts and lightweight structural members is disclosed that includes: a constituent tube, for forming the wall, that comprises: a flexible core component, for providing an adjustable shape on which to wind or braid filaments or fabric; and an adjustable shape hollow structure, for reducing weight, providing a path for the core to be evacuated, tightly conformed to the core, and tow, braid filaments or fabric, for providing a reinforcing fiber matrix for saturation with epoxy, spirally wrapped, applied or braided on the constituent tube. Methods of producing contemplated composite tubes are also disclosed.

Abstract: A hollow wall composite tube for improving performance in sports shafts and lightweight structural members is disclosed that includes: a constituent tube, for forming the wall, that comprises: a flexible core component, for providing an adjustable shape on which to wind or braid filaments or fabric; and an adjustable shape hollow structure, for reducing weight, providing a path for the core to be evacuated, tightly conformed to the core, and tow, braid filaments or fabric, for providing a reinforcing fiber matrix for saturation with epoxy, spirally wrapped, applied or braided on the constituent tube. Methods of producing contemplated composite tubes are also disclosed.

Abstract: A one piece composite tube having a hollow wall structure. The outside and inside of the tube have a standard surface and shape for bonding or fastening. The hollow wall reduces vibration and allows consistent flexure and torsion. The shape of the hollow wall may be tuned to maintain light weight and optimize strength for a given application.