Skateboard

From Academic Kids

A modern skateboard.
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A modern skateboard.

A skateboard is a (usually) narrow platform with attached wheels, developed in the twentieth century by surfers made from rollerskates, for recreation and transportation. They are typically used by young people.

Missing image
Skateboard-truck.jpg
A skateboard truck

Skateboards are composed of several parts. The deck forms the body of the skateboard and provides a place to stand. It is covered with grip tape, which adds friction to its surface. The deck is normally 76-91 cm long (2 1/2 to 3 feet). The longboard, a common variant of the skateboard, has a longer deck. Decks were originally a single piece of wood but are now made from usually seven plys of Canadian Hard Rock Maple glued together, or (more uncommonly) other composite materials. Attached to the deck are two metal trucks, which connect to the wheels. (The corresponding parts of trains and other vehicles are also called trucks.) The trucks are further composed of two parts. The top part of the truck is screwed to the deck and is called the baseplate, and beneath it is the hanger. Between the baseplate and the hanger are bushings, also rubbers or grommets, that provide the spring mechanism for turning the skateboard. A bolt called a kingpin holds these parts together. Two polyurethane wheels attach to each hanger. Inside each wheel are two ball bearings.

Skateboards are used for skateboarding and skateboarding tricks. A person who rides a skateboard is a skateboarder or a skater. Skateboarders may wear protective clothing, including but not limited to helmets, gloves, knee and elbow pads or wrist braces especially when riding in skate parks (where it may be required by skatepark rules). A substantial amount (in fact, virtually all) of street riders scorn all safety equipment, citing better mobility and lack of need.da:Skateboard de:Skateboard el:Τροχοσανίδα es:Monopatn he:גלגשת fr:planche roulettes ja:スケートボード nl:Skateboard no:Rullebrett pl:Deskorolka sv:Skateboard fi:Rullalauta


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