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Kick Scooter
A kick scooter (also referred to as a push-scooter or scooter) is a Human-powered land vehicle, human-powered street vehicle with a mwod:handlebar#:~:text=: a straight or bent bar,usually used in plural, handlebar, deck, and wheels propelled by a rider pushing off the ground with their leg. Today the most common scooters are made of aluminum, titanium, and steel. Some kick scooters made for younger children have 3 to 4 wheels (but most common ones have 2 wheels) and are made of plastic and do not fold. High-performance kickbikes are also made. A company that had once made the Razor Scooters revitalized the design in the mid-nineties and early two-thousands. Three-wheel models where the frame forks into two decks are known as Y scooters or trikkes. Motorized scooters, historically powered by internal combustion engines, and more recently electric motors, are self-propelled kick scooters capable of speeds sometimes exceeding . Models and history Early scooters Kick scooter ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ball Bearings
A ball bearing is a type of rolling-element bearing that uses balls to maintain the separation between the bearing races. The purpose of a ball bearing is to reduce rotational friction and support radial and axial loads. It achieves this by using at least two races to contain the balls and transmit the loads through the balls. In most applications, one race is stationary and the other is attached to the rotating assembly (e.g., a hub or shaft). As one of the bearing races rotates it causes the balls to rotate as well. Because the balls are rolling, they have a much lower coefficient of friction than if two flat surfaces were sliding against each other. Ball bearings tend to have lower load capacity for their size than other kinds of rolling-element bearings due to the smaller contact area between the balls and races. However, they can tolerate some misalignment of the inner and outer races. Common ball bearing designs include ''angular contact, axial, deep-groove,'' a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aluminium
Aluminium (or aluminum in North American English) is a chemical element; it has chemical symbol, symbol Al and atomic number 13. It has a density lower than that of other common metals, about one-third that of steel. Aluminium has a great affinity towards oxygen, passivation (chemistry), forming a protective layer of aluminium oxide, oxide on the surface when exposed to air. It visually resembles silver, both in its color and in its great ability to reflect light. It is soft, magnetism, nonmagnetic, and ductility, ductile. It has one stable isotope, 27Al, which is highly abundant, making aluminium the abundance of the chemical elements, 12th-most abundant element in the universe. The radioactive decay, radioactivity of aluminium-26, 26Al leads to it being used in radiometric dating. Chemically, aluminium is a post-transition metal in the boron group; as is common for the group, aluminium forms compounds primarily in the +3 oxidation state. The aluminium cation Al3+ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Denis Johnson (inventor)
Denis Johnson ( – 25 December 1833) was an English coachmaker who worked on Long Acre, London, England. He was a pioneer bicycle-maker. Biography Johnson was married to Mary Newman in St Anne's Church, Soho in 1792 and they had two daughters. He worked out of 75 Long Acre for about 15 years from 1818. Johnson continued as a coachmaker until he died on Christmas Day 1833. The family business continued to trade here until 1867. Bicycle maker Johnson created an improved version of the German Karl Drais's Draisine, the archetypal bicycle. Johnson's pedestrian curricle was patented in London in December 1818, becoming Britain's first bicycle. It featured an elegantly curved wooden frame, allowing the use of larger wooden wheels. Several parts were made of metal, which allowed the vehicle to be lighter than the continental version. Although Johnson referred to his machine as a ‘pedestrian curricle’, it was formally referred to as a ‘velocipede’, and popularly as a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kicksled
The kicksled or spark is a small sled consisting of a chair mounted on a pair of flexible metal runners that extend backward to about twice the chair's length. The sled is propelled by kicking ( or in the Scandinavian languages) the ground by foot. There is a handlebar attached to the top of the chair back. ''Kicksled'' is a direct translation of the Finnish word . Estonian calls it either a 'pushsled' () or 'Finnish sled' (). Some other possible translations are ''kicker'' and ''chair-sled''. Design The typical adult sized sled has runners about long, spaced apart. The steel runner blades are about wide.The handlebars are about above ground. The kicksled is driven forward by the driver standing on one runner, kicking backwards on the ground with the other foot, hence the name. The flexibility of the runners allows the driver to steer the kicksled by twisting the handlebars. One can have a passenger or luggage on the chair seat. The kicksled can also be used as a dog sled ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Amish
The Amish (, also or ; ; ), formally the Old Order Amish, are a group of traditionalist Anabaptism, Anabaptist Christianity, Christian Christian denomination, church fellowships with Swiss people, Swiss and Alsace, Alsatian origins. As they maintain Nonconformity to the world#Anabaptism, a degree of separation from surrounding populations, and hold their faith in common, the Amish have been described by certain scholars as an ethnoreligious group, combining features of an ethnicity and a Christian denomination. The Amish are closely related to Old Order Mennonites and Conservative Mennonites, denominations that are also a part of Anabaptist Christianity. The Amish are known for simple living, plain dress, Christian pacifism#Anabaptist churches, Christian pacifism, and slowness to adopt many conveniences of modern technology, with a view neither to interrupt family time, nor replace face-to-face conversations whenever possible, and a view to maintain self-sufficiency. The Amis ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Husky
Husky is a general term for a type of dog used in the polar regions, primarily and specifically for work as sled dogs. It refers to a traditional northern type, notable for its cold-weather tolerance and overall hardiness. Modern racing huskies that maintain arctic breed traits (also known as Alaskan huskies) represent an ever-changing crossbreed of the fastest dogs. Huskies have continued to be used in sled-dog racing, as well as expedition and trek style tour businesses, and as a means of essential transportation in rural communities. Huskies are also kept as pets, and groups work to find new pet homes for retired racing and adventure-trekking dogs. Etymology The term "husky" first came into usage in the mid to late 1700s. At this time, "Esquimaux" or "Eskimo" was a common term for pre-Columbian Arctic inhabitants of North America. Several dialectal permutations were in use including Uskee, Uskimay and Huskemaw. Thus, dogs used by Arctic people were the dogs of the Husk ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dog Scootering
Mushing is a sport or transport method powered by dogs. It includes drafting (dog), carting, pulka, dog scootering, sled dog racing, skijoring, freighting, and weight pulling. More specifically, it implies the use of one or more dogs to pull a sled, most commonly a specialized type of dog sled on snow, or a Dryland mushing, rig on dry land. History The practice of using dogs to pull sleds dates back to at least 6000 BC. Remnants of sleds and harnesses has been found with canine remains in Siberia which carbon-dated to 7800–8000 years ago. Native American cultures also used dogs to pull loads. For the better part of the 1600s, the Iroquois and French clashed in a series of attacks and reprisals. For this reason, Samuel de Champlain arranged to have young French men live with the natives, to learn their language and customs and help the French adapt to life in North America. These men, known as (runners of the woods), were the first European mushers in North America, extended Fr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mongoose (bicycles)
Mongoose is an American brand name of bicycles originally designed, manufactured, and sold by BMX Products, Inc. It is now available through the distributor Pacific Cycle. History BMX Products, Inc. Skip Hess started BMX Products, Inc. out of his home in Simi Valley, California in September 1974 with his first product being the famous Motomag One wheel. According to Hess, at its largest stage of expansion, BMX Products, Inc. employed about 85 people. In its early years, Hess recalled that about 600 frames per day were produced at its Chatsworth, Los Angeles location. RECO (Racer Engineering Company) was a wholly owned manufacturing division created for insurance purposes to be separate from BMX Products, Inc, even though RECO was always produced in-house. It was headed by Vice President of Manufacturing Hoppy Brooks, in his attempt to market motorcycle frames. Post-BMX Products Mongoose was sold to American Group in 1985 and marketed by their Service Cycle subsidiary. Bell ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
GT Bicycles
GT Bicycles, Inc. was an American company that designed and manufactured BMX, Mountain bike, mountain, and Road bicycle, road bicycles. GT was a division of the Dutch conglomerate Pon Holdings, which also markets Cannondale, Schwinn, Mongoose (company), Mongoose, IronHorse, DYNO, and RoadMaster bicycle brands; all manufactured in Asia. GT was founded in 1972, by Gary Turner and Richard Long in Santa Ana, California, and was noted at its inception for spearheading the prominence of BMX bicycles, later for developing a range of bikes around its "triple triangle" design, and at the end of its independent history, winning a commission to manufacture a $30,000 carbon fiber "Superbike" for the 1996 Summer Olympics, 1996 Summer games. GT sponsored numerous race teams and individuals, including noted riders Rebecca Twigg and Juli Furtado. In 1998, the company went public and subsequently merged with Questor Partners, then owner of Schwinn. The conglomerate went bankrupt in 2001 and w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bicycle Wheel
A bicycle wheel is a wheel, most commonly a wire wheel, designed for a bicycle. A pair is often called a wheelset, especially in the context of ready built "off the shelf" performance-oriented wheels. Bicycle wheels are typically designed to fit into the bicycle frame, frame and bicycle fork, fork via Dropout (bicycle part), dropouts, and hold bicycle tires. Invention The first wheel to use the tension in wire wheel, metal spokes was invented by George Cayley, Sir George Cayley to achieve lightness in his 1853 glider. Construction The first bicycle wheels followed the traditions of carriage building: a wooden hub, a fixed steel axle (the bearings were located in the fork ends), wooden spokes and a shrink fitted iron tire. A typical modern wheel has a metal hub, wire tension spokes and a metal or carbon fiber rim which holds a pneumatic rubber tire. Hub A hub is the center part of a bicycle wheel. It consists of an axle, bearing (mechanical), bearings and a hub shell. The ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
