Scale

Scales with special uses are often named after the person who invented them. Because a tail bone makes the execution of an ollie more difficult and because the skateboard decks today don't last as long as in the 1980's a tail bone is today a very rare accessory. Scale can refer to:. It's purpose is to protect the tail of the deck from wear. . Tail bone, aka tail guard: A piece of plastic fastened under the tail of a skateboard. Time scales: Historical periods, Geologic periods. It's purpose is to protect the nose of the deck from being damaged when the skateboard hits an obstacle.

Hierarchy. Nose guard: Plastic "bumpers" fastened to the nose of a skateboard. Chain of being. It's also called a "Bird" since it's shape resembles the shape your hand makes when giving someone the bird. The Torino Scale and the Palermo scale measure the impact hazard level of near-Earth objects such as asteroids. Their purpose is to prevent the skateboard from being stopped when the truck hits an obstacle (for example when rolling up a curb). The Fujita scale estimates the intensity of tornadoes. Lappers: Plastic covers fastened on the inside of the truck that covered the kingpin and the baseplate.

The Glasgow Coma Scale measures the severity of comas. They were invented during a time when street skating was in it's infancy but were not very popular since they wore out very quickly and had to be replaced often. The Scoville Scale measures the hotness of peppers. Copers: Plastic covers fastened under the truck's hanger which provide a more slippery surface when grinding. The Goldberg scale measures mania and depression. Most skateboarders no longer use rails, since the boards have become lighter and thus holding a grab during aerial tricks has become easier. The Celsius, Fahrenheit, and Kelvin scales (among others) measure temperature. They also provide a more slippery surface and protect the deck from scratches during board slides.

The Beaufort scale is used to measure wind force. They used to be popular among vert skaters to whom they provided additional grip during aerial tricks. The Richter scale, the Mercalli scale, the Rossi-Forel scale and the Omori are all used to measure the intensity of earthquakes. Rails: Narrow plastic strips that were fastened under the deck along the edges. Social stratification, socioeconomic class. But desipte all of this, risers are not a necessary component on the skateboard. Kinsey scale, sexual orientation (Klein scale is superior but not yet as well known). More risers will equal a higher board which also increases the "pop" a rider gets when pushing down on the tail to perform an ollie, requiring less effort to get a higher ollie.

Likert scale, questionnaire format. Another reason riders install risers is that they evenly distribute impact force from the trucks to the deck, meaning less chance of the deck cracking under pressure. Scale (social sciences). This rises the deck from the ground slightly, helping to avoid "wheel-bite",. European Macroseismic Scale, Japan Meteorological Agency seismic intensity scale, Mercalli Intensity Scale, Moment magnitude scale, Richter magnitude scale. Risers are placed in between the underside of the deck and the truck. 2 mm scale, HO scale, O scale. Risers - There are special products available to help raise the board away from the trucks and the ground.

Scale model. It allows less friction and top speeds. Bohlen-Pierce scale, chromatic scale, Deutsch's scale illusion, diminished scale, mathematics of musical scales, minor scale. The Best Bearings are Super Swiss Six, the balls inside the case of the bearing are made of ceramic clay instead of the traditional metal. Scale (music). Higher numbers indicate that the bearing comforms to a higher degree of precision. Resource-Based Relative Value Scale, returns to scale. Bearings are graded according to the ABEC scale, which goes from 1-9, in odd numbers.

Scale (economics). Bearings - Inside each wheel are seven precision ball bearings, secured by a plastic "crown". Allred-Rochow scale, Mulliken scale, Pauling scale. For general cruising most users prefer larger, softer wheels. Hounsfield scale (radiodensity). Smaller sizes like 52-55mm keep the board closer to the ground and are lighter which makes tricks easier to perform. Mulliken scale electronegativity. Larger sizes like 65-80mm roll faster which makes riding vert ramps easier.

Kelvin scale measures Thermodynamic temperature. The wheels, usually made of polyurethane and come in nine different sizes and suit different types of skating. Solar flare energy intensity. Wheels - The wheels attach to each hanger. Torino Scale. A bolt called a kingpin holds these parts together. Palermo Technical Impact Hazard Scale. The softer the bushings, the easier it is to turn.

Large-scale structure of the cosmos. The stiffer the bushings, the more stable the skateboard. Scale factor (Universe). The bushings cushion the truck when it turns. Atmospheric sciences: Celsius scale, Fahrenheit scale, Kelvin scale, Saffir-Simpson Hurricane Scale, Fujita scale (tornadoes), Beaufort scale (wind). Between the baseplate and the hanger are bushings, also rubbers or grommets, that provide the spring mechanism for turning the skateboard. Geosciences: Mohs scale of mineral hardness. The top part of the truck is screwed to the deck and is called the baseplate, and beneath it is the hanger.

Zoology: Scale insect, plant parasites which resemble animal scales. The trucks are further composed of two parts. Zadok scale cereal development. Trucks - Attached to the deck are two metal (usually aluminum) trucks, which connect to the wheels. Weighing scale - used for measurement of weight (mass or force). The longboard, a common variant of the skateboard, has a longer deck. Engineer's scale. Skateboard decks are usually between 28 and 32.5 inches long.

Architect's scale - (or draughtsman's scale) is a ruler-like device, which facilitates the production of technical drawings. Narrower decks are suited to street skaters who like to perform more technical tricks; a wide board often makes it awkward to pull off such maneuvers. Duration scale. Wider decks are better suited to vert skaters who need more control and stability while riding down the steep slopes and riding the transitions and walls of a halfpipe. Scale factor. The deck is normally 7 1/2 to 8 inches wide. Order of magnitude. An average, all wood deck costs about $50 (US) while a deck including a material such as fiberglass in it can cost up to $70 or so (US).

Logarithmic scale, mathematics. Sometimes other composite materials, such as fiberglass and Kevlar, are incorporated into deck construction, usually to lighten the board or increase its strength or rigidity. Scale (temperature). This is what gives the deck its strength. Scale (zoology). The plies of maple are cross-laminated, meaning the direction of the wood grain alternates between plies. Scale (spatial). Decks were originally a single piece of wood but are now usually made from seven plies of Canadian Hard Rock Maple glued together.

Scale (ratio). It is covered with grip tape, which adds friction to its surface. Scale (map). The deck forms the body of the skateboard and provides a place to stand. Scale (computing). Deck - Skateboards are composed of several parts. .

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. Another difference is that the boards of the past had a very small nose, today's boards have almost identical noses and tails (the nose is usually a bit steeper however). The trucks (axles) were also larger in size and less sturdy.

The wheels were rather large compared to most of today's sizes and were usually made of clay. Boards in the past were often in the shape of a surfboard, with little concave and had 1 ply of wood. The skateboard has evolved a lot since the 50s, not only in shape but also materials used. They are typically part of western youth culture.

It was developed in the twentieth century by surfers, who first made them using rollerskates. A skateboard is a narrow wheeled platform (usually made of 7 ply maple), used for recreation and transportation.