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Single-track Vehicle
A single-track vehicle is a vehicle that leaves a single ground track as it moves forward. Single-track vehicles usually have little or no lateral stability when stationary but develop it when moving forward or controlled. In the case of wheeled vehicles, the front and rear wheel usually follow slightly different paths when turning or when out of alignment. Single-track vehicles have unique dynamics that, in the case of wheeled vehicles, are discussed at length in bicycle and motorcycle dynamics, that usually require leaning into a turn, and that usually include countersteering. Single-track vehicles can roll on wheels, slide, float, or hydroplane. Wheeled *bicycle, tandem bicycle, tall bike, and recumbent bicycle *motorcycle, scooter, and feet forwards motorcycle * gyrocar and gyro monorail * kick scooter *unicycle, self-balancing unicycle, Uno (dicycle), and monowheel * inline skate and roller ski (when only one is in contact with the ground or when the second follows b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
100 Corridas Y 100 Cicletadas En Todo Chile
1 (one, unit, unity) is a number representing a single or the only entity. 1 is also a numerical digit and represents a single unit of counting or measurement. For example, a line segment of ''unit length'' is a line segment of length 1. In conventions of sign where zero is considered neither positive nor negative, 1 is the first and smallest positive integer. It is also sometimes considered the first of the infinite sequence of natural numbers, followed by 2, although by other definitions 1 is the second natural number, following 0. The fundamental mathematical property of 1 is to be a multiplicative identity, meaning that any number multiplied by 1 equals the same number. Most if not all properties of 1 can be deduced from this. In advanced mathematics, a multiplicative identity is often denoted 1, even if it is not a number. 1 is by convention not considered a prime number; this was not universally accepted until the mid-20th century. Additionally, 1 is the s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Self-balancing Unicycle
An electric unicycle (often initialized as EUC or acronymized yuke or Uni) is a self-balancing personal transporter with a single wheel. The rider controls speed by leaning forwards or backwards, and steers by twisting or tilting the unit side to side. The self-balancing mechanism uses accelerometers, gyroscopes, and a magnetometer. In 2020, suspension models were introduced by three major manufacturers Begode, Kingsong and Inmotion. Operation Commercial units are self-balancing in a forward and backward direction, with side-to-side (lateral) stability being provided by the steering motions of the rider, similar to Bicycle and motorcycle dynamics. As of 2022, no commercial human-rideable unicycle has lateral self-balancing capabilities. However, a non-ridable, dual-axis self-balancing unicycle was demonstrated in 2012, with small, lightweight robots using a large weighted reaction wheel or control moment gyroscope. The control of a unicycle can be considered to be an inverte ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Axle Track
In automobiles (and other wheeled vehicles which have two wheels on an axle), the axle track is the distance between the hub flanges on an axle. Wheel track, track width or simply track refers to the distance between the centerline of two wheels on the same axle. In the case of an axle with dual wheels, the centerline of the dual wheel assembly is used for the wheel track specification. Axle and wheel track are commonly measured in millimetres or inches. Common usage Despite their distinct definitions, ''axle track'', ''wheel track'' and ''track width'' are frequently used interchangeably, normally to refer to the distance between the centerline of the wheels. For a vehicle with two axles, the measurements can be expressed as ''front track'' and ''rear track''. For a vehicle with more than two axles, the axles are normally numbered for reference. Offset wheels In vehicles with offset wheels, wheel track is distinct from axle track because the centreline of the wheel is not flush ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wakeboarding
Wakeboarding is a water sport in which the rider, standing on a wakeboard (a board with foot bindings), is towed behind a motorboat across its wake and especially up off the crest in order to perform aerial maneuvers. A hallmark of wakeboarding is the attempted performance of midair tricks. Wakeboarding was developed from a combination of water skiing, snowboarding and surfing techniques. The rider is usually towed by a rope behind a boat, but can also be towed by cable systems and winches, and be pulled by other motorized vehicles like personal watercraft, cars, trucks, and all-terrain vehicles. The gear and wakeboard boat used are often personalized to each rider's liking. Though natural watercourses such as rivers, lakes and areas of open water are generally used in wakeboarding, it is possible to wakeboard in unconventional locations, such as flooded roads and car parks, using a car as the towing vehicle. Wakeboarding is done for pleasure and competition, ranging from f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Waterskiing
Water skiing (also waterskiing or water-skiing) is a surface water sport in which an individual is pulled behind a boat or a cable ski installation over a body of water, skimming the surface on two skis or one ski. The sport requires sufficient area on a stretch of water, one or two skis, a tow boat with tow rope, two or three people (depending on local boating laws), and a personal flotation device. In addition, the skier must have adequate upper and lower body strength, muscular endurance, and good balance. There are water ski participants around the world, in Asia and Australia, Europe, Africa, and the Americas. In the United States alone, there are approximately 11 million water skiers and over 900 sanctioned water ski competitions every year. Australia boasts 1.3 million water skiers. There are many options for recreational or competitive water skiers. These include speed skiing, trick skiing, show skiing, slaloming, jumping, barefoot skiing and wakeski. Similar, relate ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Robot Locomotion
Robot locomotion is the collective name for the various methods that robots use to transport themselves from place to place. Wheeled robots are typically quite energy efficient and simple to control. However, other forms of locomotion may be more appropriate for a number of reasons, for example traversing rough terrain, as well as moving and interacting in human environments. Furthermore, studying bipedal and insect-like robots may beneficially impact on biomechanics. A major goal in this field is in developing capabilities for robots to autonomously decide how, when, and where to move. However, coordinating numerous robot joints for even simple matters, like negotiating stairs, is difficult. Autonomous robot locomotion is a major technological obstacle for many areas of robotics, such as humanoids (like Honda's Asimo). Types of locomotion Walking * ''See'' Passive dynamics * ''See'' Zero Moment Point * ''See'' Leg mechanism * ''See'' Hexapod (robotics) Walking robots si ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pogo Stick
A pogo stick is a device for jumping off the ground in a standing position, through the aid of a spring, or new high performance technologies, often used as a toy, exercise equipment or extreme sports instrument. It led to an extreme sport named extreme pogo or "Xpogo". It consists of a pole with a handle at the top and footrests near the bottom, and a spring located somewhere along the pole. The spring joins two sections of the pole, which extends below the footpads. The jumper places their feet on the footpads while balancing on the pole, then jumps up or down with a bending action of the knees to add or subtract energy in the spring. When the spring is at full compression or extension, the jumper is lifted by the recoil of the spring, being launched several inches or feet into the air. This process is repeated to maintain a periodic bounce. The pogo stick can be steered by shifting one's weight off the centerline of the spring in the desired horizontal direction thus produ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ice Skate
Ice skates are metal blades attached underfoot and used to propel the bearer across a sheet of ice while ice skating. The first ice skates were made from leg bones of horse, ox or deer, and were attached to feet with leather straps. These skates required a pole with a sharp metal spike that was used for pushing the skater forward, unlike modern bladed skates. Modern skates come in many different varieties, which are chosen depending on the nature of the requirements needed for the skating activity. They are worn recreationally in ice rinks or on frozen bodies of water across the globe and are used as footwear in many sports, including figure skating, bandy, ice hockey, ringette, rink bandy, rinkball, speed skating and tour skating. History According to a study done by Federico Formenti, University of Oxford, and Alberto Minetti, University of Milan, Finns were the first to develop ice skates some 5,000 years ago from animal bones. This was important for the Finnish populati ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Skirider
A Skirider is a kind of scooter designed to work on snow in 2002 by 2004 British inventor of the year Andrew Hubert winning Platinum for design and Gold leisure. It was invented to make the slopes more accessible to people whose physical limitations prevented them from skiing but ironically it soon caught on with extreme sports enthusiasts. It won Silver prize at Salon Des Inventions in Geneva in 2005 and is increasing in popularity. It won its first slope approvals in Whistler B.C. in early December 2005 and quickly became approved for popular ski resort slopes around the world meeting health and safety standards for the following slopes: Austria :Mayrhofen, St Christoph, St Stefan Canada :Cypress Mountain, Fernie Alpine Resort, Red Mountain Resort, Sun Peaks, Whistler-Blackcomb France : Saisies, Les Menuires, Morillon, Val-d'Isère Greenland :Nuuk, Italy :Bolzano, Val Gardena Serbia : Kapaonik Slovenia : Krvavec, Soriska Planina, Vogel Switzerland : Davos United Kingdom : Mil ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Monoski
A monoski is a single wide ski used for skiing on snow. The same boots, bindings, and poles are used as in alpine skiing. Unlike in snowboarding, both feet face forward, rather than sideways to the direction of travel. Similar equipment includes the skwal and the teleboard, with feet in tandem formation (one ahead of the other). Monoskiing was invented in the late 1950s by Dennis Phillips at Hyak, Washington using a single water ski and bear trap bindings. Surfer Mike Doyle promoted the monoski in the early 1970s, after which monoskiing's relative popularity slowly increased, but the interest eventually waned in favor of snowboarding. Recently the popularity of monoskiing has increased, particularly in France and in the United States largely due to technological advances in the design of the ski. As with alpine skis the carved shape of the ski has meant easier turns, and as a result, skiers and even snowboarders are finding the transition to monoskis less daunting. Festi ... [...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 l ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Roller Skiing
Roller skiing is an off-snow equivalent to cross-country skiing. Roller skis have wheels on their ends and are used on a hard surface, to emulate .Bryhn, Rolf and Knut Are Tvedt (eds.): ''Kunnskapsforlagets idrettsleksikon''. (Norwegian Encyclopedia of Sports). Oslo: Kunnskapsforlaget, 1990. The skiing techniques used are very similar to techniques used in cross-country skiing on snow. First created as a summer training exercise, roller skiing grew into a competitive sport in its own right. Annual championships are held in various locations around the world. Most, if not all, national cross-country ski teams around the world roller ski during the off-season for specific physical training simulating winter skiing. In Norway, separate roller ski facilities have been constructed to allow exercise off public roads. History The first roller skis were built in the mid-1930s in Italy and North Europe. In the early 1950s, when cross-country skiing started to evolve to a serious competiti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
