A dart may comprisein order from the front thereofa point, a barrel, a shaft, and a flight. The flight may comprise a plurality of fins. The fins may comprise mesh-like reinforcing ribs that protrude from surfaces thereof. The fins may further comprise, at peripheries thereof, fin rims formed so as to be of increased thickness. Reinforcing ribs may be formed over the approximate entireties of the fins. The shaft may comprise an insertion portion at the back end thereof. The flight may comprise a central axial hole having an opening at the front end thereof. The shaft may be removably installable with respect to the flight by virtue of a cap-like arrangement by which the insertion portion is inserted within, and is coupled and secured to, the central axial hole. The central axial hole may be formed from the front end of the flight to the back end thereof.

A dart may comprisein order from the front thereofa point, a barrel, a shaft, and a flight. The flight may comprise a plurality of fins. The fins may comprise mesh-like reinforcing ribs that protrude from surfaces thereof. The fins may further comprise, at peripheries thereof, fin rims formed so as to be of increased thickness. Reinforcing ribs may be formed over the approximate entireties of the fins. The shaft may comprise an insertion portion at the back end thereof. The flight may comprise a central axial hole having an opening at the front end thereof. The shaft may be removably installable with respect to the flight by virtue of a cap-like arrangement by which the insertion portion is inserted within, and is coupled and secured to, the central axial hole. The central axial hole may be formed from the front end of the flight to the back end thereof.

An arrow construction system comprising a tip canister configured to receive an arrow tip and to attach to an arrow shaft. The tip canister contains a power source and sensitive electronics. The power circuit may be a battery, a primary storage capacitor, a coil and a rectifier, and/or a solar cell. The tip canister may be electrically connected to the nock via the shaft electrical conduction system. The electrical conductors may be integrated into the shaft. The wires may form a cable with standard connectors. The nock may contain a light. Alternatively, the fletching may comprise light emitting film or fibers. The circuits may include a flash circuit, an audio circuit, a radio beacon, a wireless transmitter, environmental sensors, a camera, a switch, and/or a GPS device. The switch may be activated by a current detected in a coil or by an accelerometer.

A method of playing a game on a conventional golf hole having a tee region, a fairway region, a green region and a target includes loosing an arrow having an aerodynamic arrow head with a bow from the tee region or fairway region towards the green region until the arrow reaches a predetermined distance from the target, determining a number of times the arrow is loosed on the golfhole until the arrow lands within the predetermined distance from the target, and determining a score for the golf hole in response to the number of times the arrow is loosed on the golf hole and an approximate distance between the arrow and the target.

A youth javelin having a tip, a shaft, a handle and a tail wherein the overall length of the youth javelin is in the range of 135 cm to 148 cm, the weight is in the range of 240 g and 265 g, has a balance point in the range of 57 cm and 60 cm measured from the forward end of the tip, and a weight-to-surface-area ratio in the range of 0.2000 g/cm.sup.2 to 0.2585 g/cm.sup.2.

A youth javelin having a tip, a shaft, a handle and a tail wherein the overall length of the youth javelin is in the range of 135 cm to 148 cm, the weight is in the range of 240 g and 265 g, has a balance point in the range of 57 cm and 60 cm measured from the forward end of the tip, and a weight-to-surface-area ratio in the range of 0.2000 g/cm.sup.2 to 0.2585 g/cm.sup.2.

A youth javelin having a tip, a shaft, a handle and a tail wherein the overall length of the youth javelin is in the range of 135 cm to 148 cm, the weight is in the range of 240 g and 265 g, has a balance point in the range of 57 cm and 60 cm measured from the forward end of the tip, and a weight-to-surface-area ratio in the range of 0.2000 g/cm.sup.2 to 0.2585 g/cm.sup.2.

A youth javelin having a tip, a shaft, a handle and a tail wherein the overall length of the youth javelin is in the range of 135 cm to 148 cm, the weight is in the range of 240 g and 265 g, has a balance point in the range of 57 cm and 60 cm measured from the forward end of the tip, and a weight-to-surface-area ratio in the range of 0.2000 g/cm.sup.2 to 0.2585 g/cm.sup.2.

A deformable hollow dart head for a toy dart includes a dart cap and a connector, the dart cap has a cap top and a cylindrical cap wall extending from a periphery of the cap top, the cap wall is provided with air vents, the connector has a circular base connecting with the cap wall, thereby sealing the dart cap to form a deformable cavity, the material of the dart cap is softer than that of the circular base. At the moment when the dart toy hits a target, the dart cap contacts and impacts the target. The target exerts a reactive force on the dart toy, and the deformable cavity provides deformation space for the dart cap, thereby causing the dart cap to deform and increasing the contact area with the target.

A dart includes, in sequence from a distal side to a proximal side thereof, a tip, a barrel, and a shaft. The shaft has a diameter which gradually decreases from a distal side toward a proximal side thereof. Three flights are attached and fixed to the proximal side of the shaft at equiangular positions around a center axis of the shaft, and proximal sides of the flights protrude from the shaft to be connected to one another. The shaft includes grooves, each of which is formed between the flights adjacent to each other in a circumferential direction of the shaft, and each of the grooves has an inner width which gradually increases from a side of the flights toward an axial direction center part of the shaft and which gradually decreases from the axial direction center part of the shaft toward a side of the barrel.