Motorcycle sport is a broad field that encompasses all sporting aspects of motorcycling. The disciplines are not all races or timed-speed events, as several disciplines test a competitor's various riding skills.
Motocross is a form of off-road motorcycle racing held on enclosed off-road circuits. The sport evolved from motorcycle trials competitions held in the United Kingdom.
The American Motorcyclist Association (AMA) is an American nonprofit organization of more than 200,000 motorcyclists that organizes numerous motorcycling activities and campaigns for motorcyclists' legal rights. Its mission statement is "to promote the motorcycling lifestyle and protect the future of motorcycling." The organization was founded in 1924 and as of October 2016 had more than 1,100 chartered clubs.
Buell Motorcycles is an American motorcycle manufacturer based in Grand Rapids, Michigan, United States. It was founded in 1983 by ex-Harley-Davidson engineer Erik Buell. Harley-Davidson acquired 49 percent of Buell in 1993, and Buell became a wholly owned subsidiary of Harley-Davidson by 2003. On November 17, 2006, Buell announced that it had produced and shipped its 100,000th motorcycle.
Kenneth Leroy Roberts is an American former professional motorcycle racer and racing team owner. In 1978, he became the first American to win a Grand Prix motorcycle racing world championship. He was also a two-time winner of the A.M.A. Grand National Championship. Roberts is one of only four riders in American Motorcyclist Association (AMA) racing history to win the AMA Grand Slam, representing Grand National wins at a mile, half-mile, short-track, TT Steeplechase and road race events.
In the market, there is a wide variety of types of motorcycles, each with unique characteristics and features. Models vary according to the specific needs of each user, such as standard, cruiser, touring, sports, off-road, dual-purpose, scooters, etc. Often, some types like sport touring are considered as an additional category or integrated with touring.
Mert Lawwill is an American professional motorcycle racer, race team owner and mountain bike designer. He competed in the AMA Grand National Championship from 1962 to 1977. Lawwill is notable for winning the 1969 AMA Grand National Championship as a member of the Harley-Davidson factory racing team. After his motorcycle racing career, Lawwill became one of the top motorcycle racing frame designers and builders. Lawwill then used his experience as a motorcycle frame builder to become an innovative mountain bike designer, developing one of the first bicycle suspensions. He also developed prosthetic limbs for amputees. Lawwill was inducted in the Mountain Bike Hall of Fame in 1997 and the Motorcycle Hall of Fame in 1998.
Ossa was a Spanish motorcycle manufacturer which was active from 1924 to 1982 and from 2010 to 2015. Founded by Manuel Giró, an industrialist from Barcelona, Ossa was best known for lightweight, two-stroke-engined bikes used in observed trials, motocross and enduro. The company was known originally as Orpheo Sincronic Sociedad Anónima (O.S.S.A.) and was later renamed Maquinaria Cinematográfica, S.A..
The motorcycle sport of racing includes motorcycle road racing and off-road racing, both either on circuits or open courses, and track racing. Other categories include hill climbs, drag racing and land speed record trials.
Kelvin Carruthers is an Australian former professional Motorcycle racer and racing team manager. He competed in the FIM Grand Prix motorcycle racing world championships from 1966 to 1970, and in AMA road racing competitions from 1971 to 1973. Carruthers is prominent for winning the 1969 250cc World Championship. After his motorcycle riding career, he became race team manager for world championship winning riders Kenny Roberts and Eddie Lawson.
Yvon Duhamel was a French Canadian professional motorcycle and snowmobile racer. A six-time winner of the White Trophy, the highest award in Canadian motorcycle racing, he was one of the most accomplished motorcycle racers in Canadian motorsports history. His motorcycle racing career spanned the transition from the 60 horsepower four-stroke motorcycles of the 1960s, to the 100 horsepower two-stroke motorcycles of the 1970s. Duhamel was a versatile rider competing in numerous motorcycle racing disciplines including; trials, motocross, ice racing, drag racing, flat track racing and most prominently in road racing as a member of the Kawasaki factory racing team.
A motorcycle frame is a motorcycle's core structure. It supports the engine, provides a location for the steering and rear suspension, and supports the rider and any passenger or luggage. Also attached to the frame are the fuel tank and battery. At the front of the frame is found the steering head tube that holds the pivoting front fork, while at the rear there is a pivot point for the swingarm suspension motion. Some motorcycles include the engine as a load-bearing stressed member; while some other bikes do not use a single frame, but instead have a front and a rear subframe attached to the engine.
Dick Mann was an American professional motorcycle racer. He was a two-time winner of the A.M.A. Grand National Championship. Mann was inducted in the Motorsports Hall of Fame of America in 1993, and the Motorcycle Hall of Fame in 1998. He was one of the few riders to ride motocross and Observed Trials as well as dirt flat tracks, TT and road racing.
Husqvarna Motorcycles GmbH is a Swedish company which designs, engineers, manufactures and distributes motocross, enduro, supermoto and street motorcycles.
Gary Jones is an American former professional motocross and desert racer. He competed in the AMA Motocross Championships from 1971 to 1976. Jones is notable for winning the inaugural AMA 250cc motocross national championship in 1972. Jones then successfully defended his national championship in 1973 and 1974, winning three consecutive 250cc motocross national championships while competing on three different brands of motorcycles, a feat which has never been repeated in AMA motocross history. He was inducted into the AMA Motorcycle Hall of Fame in 2000.
Peter Williams was a British former professional motorcycle racer. He competed in Grand Prix motorcycle road racing from 1966 to 1973. He also competed at many levels on home short-circuit races. He raced many times on the Isle of Man TT course from 1966 to 1973. His father was Jack Williams who ran the Associated Motor Cycles (AMC) race department. Williams trained in mechanical engineering and introduced via racing alloy wheels, an innovation which is commonplace on today's road bikes, and was also an early pioneer of solo-motorcycle disc brakes.
Gavin Trippe was a motorcycle racing promoter, journalist, and publisher who was inducted to the Motorcycle Hall of Fame in 2005. He died following an automobile accident in California.
American Flat Track is an American motorcycle racing series. The racing series, founded and sanctioned by the American Motorcyclist Association (AMA) in 1954, originally encompassed five distinct forms of competitions including mile dirt track races, half-mile, short-track, TT steeplechase and road races. The championship was the premier motorcycle racing series in the United States from the 1950s up until the late 1970s.
The "Pure Enduro" series of off-road racing motorcycles ran from 1977 through to 1984 in engine displacements from 175cc through 400cc. All engines were case-reed valve, air-cooled, two-stroke and single-cylinder with plain steel bores. Lubrication was provided via 20:1 pre-mix. These were directly related to the Suzuki RM series range of motocross racers.
The Harley-Davidson KR or KR750 was a 45.125 cu in (739.47 cc) displacement V-twin engine racing motorcycle made by Harley-Davidson from 1953 through 1969 for flat track racing. It was also used in road racing in the KRTT faired version. When the KR was first introduced, it dominated motorcycle racing in the United States. In 1970 it was replaced by the long-lived and US race-winning Harley-Davidson XR-750.
