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Dual Edge Snowboard
The Dual Edge Snowboard (DES) is a technical categorization of a general snowboard concept and technology, where a device or mechanism creates two simultaneously ridden edges for a snowsport equipment that allows the user to ride in a similar fashion to the basic (classic) snowboard. Brief history These systems have been around since the commercial beginning of snowboarding, circa 1984. Possibly the earliest successful attempt was the SwingBo. The SwingBo was created by the Struck brothers of Germany. The original equipment can still be found on internet auction sites or as the foundation for some paraplegic ski chairs.Deuce Snowboardsintroduced a modern version of the DES that has undergone extensive engineering design and testing. According to Deuce Snowboards, the DES is the next evolutionary step of the snowboard, but it appears that they are evolving the ski sport as well. There are various other attempts, which typically, were only patented, and were likely not technical ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Snowboard
Snowboards are boards where the user places both feet, usually secured, to the same board. The board itself is wider than most skis, with the ability to glide on snow."snowboarding." Dictionary.com Unabridged (v 1.1). Random House, Inc. 17 Mar. 2009. . Snowboards widths are between 6 and 12 inches or 15 to 30 centimeters. Snowboards are differentiated from monoskis by the stance of the user. In monoskiing, the user stands with feet inline with direction of travel (facing tip of monoski/downhill) (parallel to long axis of board), whereas in snowboarding, users stand with feet transverse (more or less) to the longitude of the board. Users of such equipment may be referred to as ''snowboarder''s. ''Commercial snowboards'' generally require extra equipment such as bindings and special boots which help secure both feet of a snowboarder, who generally ride in an upright position. These types of boards are commonly used by people at ski hills, mountains, backcountry, or resorts for le ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Germany
Germany,, officially the Federal Republic of Germany, is a country in Central Europe. It is the second most populous country in Europe after Russia, and the most populous member state of the European Union. Germany is situated between the Baltic and North seas to the north, and the Alps to the south; it covers an area of , with a population of almost 84 million within its 16 constituent states. Germany borders Denmark to the north, Poland and the Czech Republic to the east, Austria and Switzerland to the south, and France, Luxembourg, Belgium, and the Netherlands to the west. The nation's capital and most populous city is Berlin and its financial centre is Frankfurt; the largest urban area is the Ruhr. Various Germanic tribes have inhabited the northern parts of modern Germany since classical antiquity. A region named Germania was documented before AD 100. In 962, the Kingdom of Germany formed the bulk of the Holy Roman Empire. During the 16th ce ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paraplegic
Paraplegia, or paraparesis, is an impairment in motor or sensory function of the lower extremities. The word comes from Ionic Greek () "half-stricken". It is usually caused by spinal cord injury or a congenital condition that affects the neural (brain) elements of the spinal canal. The area of the spinal canal that is affected in paraplegia is either the thoracic, lumbar, or sacral regions. If four limbs are affected by paralysis, tetraplegia or quadriplegia is the correct term. If only one limb is affected, the correct term is monoplegia. Spastic paraplegia is a form of paraplegia defined by spasticity of the affected muscles, rather than flaccid paralysis. The American Spinal Injury Association classifies spinal cord injury severity in the following manner. ASIA A is the complete loss of sensory function and motor skills below the injury. ASIA B is having some sensory function below the injury, but no motor function. In ASIA C, there is some motor function below the level of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Deuce DES Shredding
Deuce, Deuces, or The Deuce may refer to: Arts and entertainment Fictional characters * Deuce, in the ''Danger Girl'' comic book series * Deuce, a character in ''Shake It Up'' * Deuce, in the ''Wild Cards'' science fiction universe * Deuce Bigalow, in '' Deuce Bigalow: Male Gigolo'' (1999) and '' Deuce Bigalow: European Gigolo'' (2005) * Deuce Cooper, in the film '' Ed'' * Deuce Loosely, in ''The Sifl and Olly Show'' * Deuces, a gang in the film '' South Central'' Gaming * Deuce (dice), the side of a die showing 2 * Deuce (playing card), the playing card with the highest value in German card games * Deuces (solitaire), a card game * Deuces or Big two, a card game Music * Deuce (band), a British mid-1990s pop band Albums * ''Deuce'' (Rory Gallagher album), 1971 * ''Deuce'' (Kurtis Blow album), 1981 * ''Deuce'' (The D.O.C. album), 2003 * ''Deuce'' (Beautiful Creatures album), 2005 * ''Deuce'' (video), a video album by Korn, 2002 * ''Deuces'' (album), a 2007 album by C ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gear Mechanism
A gear is a rotating circular machine part having cut teeth or, in the case of a cogwheel or gearwheel, inserted teeth (called ''cogs''), which mesh with another (compatible) toothed part to transmit (convert) torque and speed. The basic principle behind the operation of gears is analogous to the basic principle of levers. A gear may also be known informally as a cog. Geared devices can change the speed, torque, and direction of a power source. Gears of different sizes produce a change in torque, creating a mechanical advantage, through their ''gear ratio'', and thus may be considered a simple machine. The rotational speeds, and the torques, of two meshing gears differ in proportion to their diameters. The teeth on the two meshing gears all have the same shape. Two or more meshing gears, working in a sequence, are called a gear train or a '' transmission''. The gears in a transmission are analogous to the wheels in a crossed, belt pulley system. An advantage of gears is t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Carve Turn
A carved turn is a skiing and snowboarding term for the technique of turning by shifting the ski or snowboard onto its edges. When edged, the sidecut geometry causes the ski (in the following, snowboard is implicit and not mentioned) to bend into an arc, and the ski naturally follows this arc shape to produce a turning motion. The carve is efficient in allowing the skier to maintain speed because, unlike the older stem Christie and parallel turns, the skis don't create drag by sliding sideways. Starting a carved turn requires the ski to be rotated onto its edge, which can be accomplished through angulation of the hips and knees applied to both skis, leading them to efficiently carve a naturally parallel turn. Carving turns are generally smoother and longer radius than either stemmed or parallel turns. Carving maintains the skis efficiently turning along the direction of travel as opposed to skidding at an angle across the direction of travel. For a given velocity, carving with s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Parabolic Ski
Ski geometry is the shape of the ski. Described in the direction of travel, the front of the ski, typically pointed or rounded, is the tip, the middle is the waist and the rear is the tail. Skis have four aspects that define their basic performance: length, width, sidecut and camber. Skis also differ in more minor ways to address certain niche roles. For instance, skis for moguls are much softer to absorb shocks from the quick and sharp turns of the moguls and skis for powder are much wider to provide more "float" in deeper, softer snow. Length and width The length and width of the ski define its total surface area, which provides some indication of the ski's float, or ability to remain on top of the snow instead of sinking into it. Cross-country skis must be narrow to reduce drag, and thus must be long to produce the required float. Alpine skis are generally not designed to reduce drag, and tend to be shorter and wider. Skis used in downhill race events are longer, with a subtl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Half-Pipe
A half-pipe is a structure used in gravity extreme sports such as snowboarding, skateboarding, skiing, freestyle BMX, skating, and scooter riding. Overview The structure resembles a cross-section of a swimming pool, essentially two concave ramps (or quarter-pipes), topped by copings and decks, facing each other across a flat transition, also known as a ''tranny''. Originally half-pipes were half sections of a large diameter pipe. Since the 1980s, half-pipes contain an extended ''flat bottom'' between the quarter-pipes. The original style half-pipes are no longer built. Flat ground provides time to regain balance after landing and more time to prepare for the next trick. Half-pipe applications include leisure recreation, skills development, competitive training, amateur and professional competition, demonstrations, and as an adjunct to other types of skills training. A skilled athlete can perform in a half-pipe for an extended period of time by pumping to attain extreme speeds w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Freestyle Skiing
Freestyle skiing is a skiing discipline comprising aerials, Mogul Skiing, moguls, Ski Cross, cross, Half-pipe skiing, half-pipe, slopestyle and big air as part of the Freestyle skiing at the Winter Olympics, Winter Olympics. It can consist of a skier performing aerial flips and spins and can include skiers sliding rails and boxes on their skis. Known as "hot-dogging" in the early 1970s, it is also commonly referred to as freeskiing, jibbing, as well as many other names, around the world. History Ski acrobatics have been practiced since the 1930s. Aerial skiing was popularized in the 1950s by Olympic gold medalist Stein Eriksen. Early US competitions were held in the mid-1960s. In 1969, Waterville Valley Ski Area in New Hampshire, formed the first freestyle instruction program, making the resort the birthplace of freestyle skiing. The following year, Corcoran and Doug Pfeiffer, organized the first National Open Championships of Freestyle Skiing on the Sunnyside trails. In 1 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alpine Snowboarding
Snowboarding is a recreational and competitive activity that involves descending a snow-covered surface while standing on a snowboard that is almost always attached to a rider's feet. It features in the Winter Olympic Games and Winter Paralympic Games. Snowboarding was developed in the United States, inspired by skateboarding, sledding, surfing, and skiing. It became popular around the globe, and was introduced as a Winter Olympic Sport at Nagano in 1998 and featured in the Winter Paralympics at Sochi in 2014. , its popularity (as measured by equipment sales) in the United States peaked in 2007 and has been in a decline since. History The first snowboards were developed in 1965 when Sherman Poppen, an engineer in Muskegon, Michigan, invented a toy for his daughters by fastening two skis together and attaching a rope to one end so he would have some control as they stood on the board and glided downhill. Dubbed the "snurfer" (combining snow and surfer) by his wife Nancy ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Snowboard Cross
Snowboard cross, also known as boardercross, is a snowboard competition in which four to six competitors race down a course. Snowboard cross courses are typically quite narrow and include cambered turns, various types of jumps, berms, rollers, drops, steep and flat sections designed to challenge the riders' ability to stay in control while maintaining maximum speed. It is not uncommon for racers to collide with each other mid-race. Snowboard cross courses share common traits with motorcycle motocross courses, hence the similarity between the names of each sport. Competition format is typically a time trial followed by a knock-out tournament. History When Steven Rechtschaffner and partner Greg Stump had run out of ideas for segments for a TV show they were producing for Fox TV called ''Greg Stump's World of Extremes'', Rechtschaffner recalled the race concept that had been in his head for years. Given the need to come up with a final segment, Rechtschaffner, a passionate snow ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Teflon
Polytetrafluoroethylene (PTFE) is a synthetic fluoropolymer of tetrafluoroethylene that has numerous applications. It is one of the best-known and widely applied PFAS. The commonly known brand name of PTFE-based composition is Teflon by Chemours, a spin-off from DuPont, which originally discovered the compound in 1938. Polytetrafluoroethylene is a fluorocarbon solid, as it is a high-molecular-weight polymer consisting wholly of carbon and fluorine. PTFE is hydrophobic: neither water nor water-containing substances wet PTFE, as fluorocarbons exhibit only small London dispersion forces due to the low electric polarizability of fluorine. PTFE has one of the lowest coefficients of friction of any solid. Polytetrafluoroethylene is used as a non-stick coating for pans and other cookware. It is non-reactive, partly because of the strength of carbon–fluorine bonds, so it is often used in containers and pipework for reactive and corrosive chemicals. Where used as a lubricant, PT ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
