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Cross-country Cycling
Cross-country (XC) cycling is a discipline of mountain biking. Cross-country cycling became an Olympic sport in 1996 and is the only form of mountain biking practiced at the Olympics. Terrain Cross-country cycling is defined by the terrain on which it is performed. XC courses and trails consist of a mix of rough forest paths and singletrack (also referred to as doubletrack depending on width), smooth fireroads, and even paved paths connecting other trails. Until recently cross-country trails were deemed "easy" or "intermediate", due to the concept that this discipline of mountain biking relies more on physical prowess than technical ability. Bikes and equipment Cross-country bicycles are some of the lightest mountain bikes, typically between . They usually feature suspension forks in front and often have suspension in the rear. In both the front and rear, most XC bicycles have approximately of suspension travel and max out at 120 millimeters at the front typically (although ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mountain Biker 04
A mountain is an elevated portion of the Earth's crust, generally with steep sides that show significant exposed bedrock. Although definitions vary, a mountain may differ from a plateau in having a limited summit area, and is usually higher than a hill, typically rising at least 300 metres (1,000 feet) above the surrounding land. A few mountains are isolated summits, but most occur in mountain ranges. Mountains are formed through tectonic forces, erosion, or volcanism, which act on time scales of up to tens of millions of years. Once mountain building ceases, mountains are slowly leveled through the action of weathering, through slumping and other forms of mass wasting, as well as through erosion by rivers and glaciers. High elevations on mountains produce colder climates than at sea level at similar latitude. These colder climates strongly affect the ecosystems of mountains: different elevations have different plants and animals. Because of the less hospitable terrain an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
UCI Mountain Bike World Championships
The UCI Mountain Bike World Championships are the world championship events for mountain bike racing in the disciplines of cross country, downhill, and four-cross. They are organized by the Union Cycliste Internationale (UCI), the governing body of world cycling. The first three finishers in each discipline at the World Championships are awarded gold, silver, and bronze medals. The winner of each discipline is also entitled to wear the rainbow jersey in events of the same discipline until the following year's World Championships. Unlike other UCI-sanctioned mountain-bike races, the competitors in the World Championships represent national rather than commercial teams. The World Championships are usually held towards the end of the season. History The first UCI Mountain Bike World Championships took place in Durango, Colorado, USA in 1990 and featured only cross-country and downhill events. A separate UCI Trials World Championships had been held since 1986. From 2000 to 2016 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
650b
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. Th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
29er (bicycle)
29ers or two-niners are mountain bikes and hybrid bikes that are built to use 700c or 622 mm ISO (inside rim diameter) wheels, commonly called 29" wheels. Most mountain bikes once used ISO 559 mm wheels, commonly called 26" wheels. The ISO 622 mm wheel is typically also used for road-racing, trekking, cyclo-cross, touring and hybrid bicycles. In some countries, mainly in Continental Europe, ISO 622 mm wheels are commonly called 28" wheels or "28 Incher". Origins 29er rims have an interior diameter of and the average 29" mountain bike tire is (in ISO notation) 59-622 – corresponding to an outside diameter of about . The typical 26" MTB tire has a rim diameter of and an outside tire diameter of about . In the early 1980s, the size of the wheels for the emerging mountain bikes was undecided. So when English off-road cycling pioneer Geoff Apps contacted Gary Fisher and Charlie Kelly with news that he had built a prototype off-road bicycle that used lar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
British Cycling
British Cycling (formerly the British Cycling Federation) is the main national governing body for cycle sport in Great Britain. It administers most competitive cycling in Great Britain, the Channel Islands and the Isle of Man. It represents Britain at the world body, the Union Cycliste Internationale (UCI) and selects national teams, including the Great Britain (GB) Cycling Team for races in Britain and abroad. , it has a total membership of 165,000. It is based at the National Cycling Centre on the site of the 2002 Commonwealth Games in Manchester. History The British Cycling Federation (BCF) was formed in 1959 at the end of an administrative dispute within the sport. The governing body since 1878 had been the National Cyclists Union (NCU).The NCU took over control of cycling from the Amateur Athletics Association. It was originally called the Bicycle Union. It became the NCU in 1883. The legality of cyclists on the road had not been established and the NCU worried that all ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
USA Cycling
USA Cycling or USAC, based in Colorado Springs, Colorado, is the national governing body for bicycle racing in the United States. It covers the disciplines of road, track, mountain bike, cyclo-cross, and BMX across all ages and ability levels. In 2015, USAC had a membership of 61,631 individual members. USA Cycling is associated with the UCI (Union Cycliste Internationale), which governs international cycling, and the United States Olympic Committee (USOC). The organization is also a member of the continental body Confederacion Panamericana de Ciclismo (COPACI). USA Cycling also organizes the USA Cycling Pro Road Tour, the top road cycling series for men and women in the United States. History The Amateur Bicycle League of America was organized in 1920 and incorporated in New York in 1921. In 1975, the name was changed to the United States Cycling Federation. In 1995, USA Cycling, Inc. was incorporated in Colorado, and in 1995, the two corporations merged, with USA Cyclin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
NORBA
Norba, an ancient town of Latium (''Adjectum''), Italy. It is situated 1 mile northwest of the modern town of Norma, on the western edge of the Volscian Mountains or Monti Lepini. The town is perched above a precipitous cliff with a splendid view over the Pomptine Marshes below; the highest point stands to ca. 460 meters (over 1500 feet) above sea level. History Norba was a member of the Latin League of 499 BC. It became a Roman colony in 492 BC, initially to protect the border with the Volsci, and later serving as an important fortress guarding the Pomptine Marshes. It served in 199 BC as a place of detention for the Carthaginian hostages, and was captured and destroyed by Sulla's troops during the civil wars at the end of 82 BC. By the first century AD Norba is included by Pliny the Elder on his list of extinct cities in Latium. Archaeology From excavations begun in 1901 it seems clear that the remains now visible on the site are entirely Roman. The well-preserved wall ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Union Cycliste Internationale
The ''Union Cycliste Internationale'' (UCI; ; en, International Cycling Union) is the world governing body for sports cycling and oversees international competitive cycling events. The UCI is based in Aigle, Switzerland. The UCI issues racing licenses to riders and enforces disciplinary rules, such as in matters of doping. The UCI also manages the classification of races and the points ranking system in various cycling disciplines including road and track cycling, mountain biking and BMX, for both men and women, amateur and professional. It also oversees the World Championships. After the 2022 Russian invasion of Ukraine, the UCI said that Russian and Belarusian teams are forbidden from competing in international events. It also stripped both Russia and Belarus of scheduled events. History UCI was founded in 1900 in Paris by the national cycling sports organisations of Belgium, the United States, France, Italy, and Switzerland. It replaced the International Cycling As ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
