An interchangeable and weight adjustable golf grip including at least an end cap body having integral receiving ports adapted to receive variable weights, electronic chips, sensors, gauges, lasers, cameras, or biometrics within and wherein the end cap is capable of housing the various weights, chips, sensors, etc. within the end cap so that a player can interchange the weights or sensors without removing the golf grip from the shaft in order to make adjustments and so that the player can play golf without removing any other portions of the grip. Further, the invention includes contemplation of a tip collette with integral receiving ports adapted to also harbor similar weights, or sensors, etc. Data from the sensors may be transmitted by Bluetooth transmission to a smartphone or a ball launch monitor system for analysis.

A weight adjustable javelin includes an elongated shaft having a leading end and a trailing end. A nose piece includes a conical shape, a nose tip, a nose base, and an internal nose slot defined along a longitudinal axis of the nose piece. The nose base includes an opening leading into the internal nose slot. A tail piece includes a tail tip, a tail base, and an internal tail slot defined along a longitudinal axis of the tail piece. The tail base includes an opening leading into the internal tail slot. The nose base is releasably secured to the leading end of the elongated shaft. The tail base is releasably secured to the trailing end of the elongated shaft. The internal nose slot and the internal tail slot are configured to receive and retain different sized and weighted rods therein.

A copper tape has an elongated copper foil element with a thickness between about 0.01 mm and about 0.2 mm and an adhesive backing. The backing has a strength between about 3.9 N/cm and about 10 N/cm. A method of adjusting aggregate weight and weight distribution of sporting equipment includes cutting a portion of the copper tape to a length and width that adds a predetermined weight and that fits within a region of the sporting equipment and adhering the copper tape to the sporting equipment.

A copper tape has an elongated copper foil element with a thickness between about 0.01 mm and about 0.2 mm and an adhesive backing. The backing has a strength between about 3.9 N/cm and about 10 N/cm. A method of adjusting aggregate weight and weight distribution of sporting equipment includes cutting a portion of the copper tape to a length and width that adds a predetermined weight and that fits within a region of the sporting equipment and adhering the copper tape to the sporting equipment.

A system for optimizing weight distribution of a golf club including a weight receiving grip, the weight receiving grip configured to be affixed to a proximal end of a golf club shaft, wherein the weight receiving grip comprises a generally tubular member comprising a shaft bore configured to surround a proximal portion of the shaft, wherein the weight receiving grip comprises a weight retention portion at a proximal end of the weight receiving grip, the weight retention portion configured to engage a weight member, a grip expanding tool configured to deflect a portion of the weight receiving grip facilitating installation or removal of the weight members from the weight receiving grip.

A system for optimizing weight distribution of a golf club including a weight receiving grip, the weight receiving grip configured to be affixed to a proximal end of a golf club shaft, wherein the weight receiving grip comprises a generally tubular member comprising a shaft bore configured to surround a proximal portion of the shaft, wherein the weight receiving grip comprises a weight retention portion at a proximal end of the weight receiving grip, the weight retention portion configured to engage a weight member, a grip expanding tool configured to deflect a portion of the weight receiving grip facilitating installation or removal of the weight members from the weight receiving grip.

A golf club includes a tubular shaft, a golf club head affixed to a first end of the tubular shaft, and a grip abutting a second end of the shaft. The golf club further includes an adjustable counterbalance that is insertable within a hollow recess of the grip. The adjustable counter balance includes an elongate member adapted to be secured to the tubular shaft, and a movable weight. The movable weight is selectively transitionable between a first, unlocked state that permits translation of the weight along the elongate member, and a second locked state that restrains the weight from free translation.

A golf club includes a tubular shaft, a golf club head affixed to a first end of the tubular shaft, and a grip abutting a second end of the shaft. The golf club further includes an adjustable counterbalance that is insertable within a hollow recess of the grip. The adjustable counter balance includes an elongate member adapted to be secured to the tubular shaft, and a movable weight. The movable weight is selectively transitionable between a first, unlocked state that permits translation of the weight along the elongate member, and a second locked state that restrains the weight from free translation.

A golf club grip may include a docking tube and an elongated handle. The docking tube may be configured to couple to a golf club shaft and may include a docking tube sidewall. The elongated handle may be detachably couplable to the docking tube. The elongated handle may include an elongated handle sidewall defining an axial opening configured to receive the docking tube. At least one of the docking tube sidewall and the elongated handle sidewall may include a projection and the other of the docking tube sidewall and the elongated handle sidewall may include a channel. The channel may be configured to receive the projection to prevent rotation of the elongated handle relative to the docking tube when the elongated handle is coupled to the docking tube.

A golf club counter-weighting system, viable for both original manufacture and after-marketing, features an expandable weight assembly that is easily installed at a designated location within a golf club shaft and expanded via a user tool so as to become reliably secured in place by frictional pressure against the surrounding shaft. In a primary embodiment, the weight assembly is made to be threadedly engagable by the opposite end of a dual-function user tool enabling the weight assembly, when unexpanded, to be conveniently moved axially for initial installation, relocation and/or removal.