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Honda CR250M
The Honda CR250M is a two-stroke single-cylinder motorcycle manufactured by Honda from March 1973 until 1976, when it was replaced by the Honda CR250R. Background Honda had developed its global motorcycle brand through track racing, with Soichiro Honda collecting the world's best engineers together to create winning road motorcycles such as the Honda RC116. However, Honda pulled out of motorcycle racing in 1967, leaving it with a world class development team with nothing to do. Up until this point, motocross had been dominated by four-stroke-powered machines, and had no official national championship in Japan. Further, Soichiro Honda had publicly announced that Honda would never build two-stroke-powered motorcycles. The Japan Motorcycle Association introduced a domestic motocross championship from 1967, to which the group of Honda engineers - like their development counterparts at Suzuki and Yamaha - developed lighter weight two-stroke-powered machine. Suzuki's development progr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Honda CR250R
The Honda CR250R was a Honda racing In sport, racing is a competition of speed, in which competitors try to complete a given task in the shortest amount of time. Typically this involves traversing some distance, but it can be any other task involving speed to reach a specific goa ... dirt bike. The prototype was built in 1971, but it was not until late 1972 that production of the 1973 model "out of the box racers" began sale to the general public. The CR250 was produced for nearly 37 years, 2007 being the final year of production. In 1997, Honda produced an industry first, an aluminum chassis for a motocross motorcycle. These 'first gen' frames were thick, rigid, and were a big change from the previous steel frames, where flexibility had been seen as a problem in the early years. The 1997-8 engines were equipped with a new stator, which supplied DC voltage for the new Keihin carburetor with an electronic 'Power Jet' system, in efforts to control lean mixture preignition. Incl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Suzuki RH70
is a Japan, Japanese multinational corporation headquartered in Minami-ku, Hamamatsu, Japan. Suzuki manufactures automobiles, motorcycles, All-terrain vehicle, all-terrain vehicles (ATVs), outboard motor, outboard marine engines, wheelchairs and a variety of other small internal combustion engines. In 2016, Suzuki was the Automotive industry#By manufacturer, eleventh biggest automaker by production worldwide. Suzuki has over 45,000 employees and has 35 production facilities in 23 countries, and 133 distributors in 192 countries. The worldwide sales volume of automobiles is the world's tenth largest, while domestic sales volume is the third largest in the country. Suzuki's domestic motorcycle sales volume is the third largest in Japan. History In 1909, Michio Suzuki (inventor), Michio Suzuki (1887–1982) founded the Suzuki Loom Works in the small seacoast village of Hamamatsu, Japan. Business boomed as Suzuki built loom, weaving looms for Japan's giant silk industry. In 1929 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Marysville, Ohio
Marysville is a city in and the county seat of Union County, Ohio, United States, approximately 27 miles (44 km) northwest of Columbus. The population was 22,094 at the 2010 census, a 38.59% increase from 2000. Marysville's longtime slogan is "Where the Grass is Greener". In December 2008, the city was designated as a "Preserve America Community" by First Lady Laura Bush. History Origins Marysville was originally part of Northwest Territory, and then became part of the Virginia Military District within that territory, and eventually became part of the state of Ohio. One of the original surveyors of the area was James Galloway, Jr., who first visited in 1805. Marysville was founded in 1819 by Samuel W. Cuthbertson, who named the town after his daughter Mary, along the small waterway of Mill Creek. County seat designation After the organization of the county by the Ohio Legislature, Marysville was designated as the seat of Union County. The first recorded meeting ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Honda CR125M
The Honda CR125M Elsinore is a motorcycle designed and manufactured by Honda and released in late 1973. Modeled after the first Elsinore, the Honda CR250M, the 124cc version sold for $749 at its debut. A CR125M ridden by Marty Smith won the 1974 AMA National Motocross championship, spurring the Elsinore's popularity. The September 1973 issue of ''Dirt Bike'' argued that the 125 Honda Elsinore was the only off-road bike on the market at the time that offered both speed and reliability. Other Japanese 125 cc motocross bikes available at the time would have needed major suspension, motor, and chassis upgrades to be used for motocross racing. The CR125M was built in Japan and was extensively tested on motocross tracks in Japan and California. It had a chrome-moly tube frame, a six-speed gearbox, four-point adjustable Showa shocks, plastic fenders and a magnesium alloy engine casing for weight economy. The bike weighed 154 pounds dry. With a full tank, the CR125M weighed 188 pounds. The ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
AMA Motocross Championship
The AMA Motocross Championship (commercially known as Lucas Oil Pro Motocross) is an American motorcycle racing series. The motocross race series was founded and sanctioned by the American Motorcyclist Association (AMA) in 1972. The series is the major outdoor motocross series in the United States and is sanctioned by AMA Pro Racing and managed by MX Sports Pro Racing. With respect to the MXGP holding the discipline's worldwide title, and the advent of the Supercross World Championship resulting in the AMA Supercross Championship losing its world title status, the two series will form the SuperMotocross World Championship from 2023. Series history The series began in 1972 with the introduction of two classes based on 500 cc and 250 cc engine displacement formulas. A 125 cc class was added in 1974. As motocross technology developed, 500 cc two-stroke motocross bikes became too powerful for the average rider and, faced with diminishing numbers of competitors, t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gary Jones (motorcyclist)
Gary Jones (born April 22, 1952) is an American former professional motocross 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. __TOC__ Motorcycling career The son of Southern California motorcycle dealer Don Jones, he began racing professionally at the age of 15. By 1969, he earned a place on the Yamaha factory's American racing team operated by his father. Jones, along with his brother and fellow racer Dewayne Jones, helped his father further the development of motocross bikes in the late 1960s and early 1970s by redesigning the Yamaha DT mode ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lake Elsinore, California
Lake Elsinore is a city in western Riverside County, California, United States. Established as a city in 1888, it is on the shore of Lake Elsinore, a natural freshwater lake about in size. The city has grown from a small resort town in the late 19th and early 20th centuries to a suburban city with over 70,000 residents. History Native Americans have long lived in the Elsinore Valley. The Luiseño people were the earliest known inhabitants. Their pictographs can be found on rocks on the Santa Ana Mountains and in Temescal Valley, and artifacts have been found all around Lake Elsinore and in the local canyons and hills. Overlooked by the expedition of Juan Bautista de Anza, the largest natural lake in Southern California was first seen by the Spanish Franciscan padre Juan Santiago, exploring eastward from the Mission San Juan Capistrano in 1797. In 1810, the water level of the ''Laguna Grande'' was first described by a traveler as being little more than a swamp about a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chrome-moly
41xx steel is a family of SAE steel grades, as specified by the Society of Automotive Engineers (SAE). Alloying elements include chromium and molybdenum, and as a result these materials are often informally referred to as chromoly steel (common variant stylings include ''chrome-moly'', ''cro-moly'', ''CrMo'', ''CRMO'', ''CR-MOLY'', and similar). They have an excellent strength to weight ratio and are considerably stronger and harder than standard 1020 steel, but are not easily welded, requiring thermal treatment both before and after welding to avoid cold cracking. While these grades of steel do contain chromium, it is not in great enough quantities to provide the corrosion resistance found in stainless steel. Examples of applications for 4130, 4140 and 4145 include structural tubing, bicycle frames, gas bottles for transportation of pressurized gases, firearm parts, clutch and flywheel components, and roll cages. 4150 stands out as being one of the steels accepted for use in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mine, Yamaguchi
is a city located in Yamaguchi Prefecture, Japan. As of May 1, 2016, the city has an estimated population of 25,857 and a population density of 54.70 persons per km2. The total area is 472.71 km2. History The city was founded on March 31, 1954 by a merger of municipalities that departed from Mine District (''Mine-gun''). On March 21, 2008, Mine absorbed the rest of Mine District, which consisted of towns Mitō and Shūhō, while the newly merged city retained the name, Mine. Geography Climate Mine has a humid subtropical climate (Köppen climate classification ''Cfa'') with hot summers and cool winters. Precipitation is significant throughout the year, but is much higher in summer than in winter. The average annual temperature in Mine is . The average annual rainfall is with July as the wettest month. The temperatures are highest on average in August, at around , and lowest in January, at around . The highest temperature ever recorded in Mine was on 26 July 201 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Joel Robert , a community in the United States
{{disambiguation, hn, geo ...
Joel or Yoel is a name meaning "Yahweh Is God" and may refer to: * Joel (given name), origin of the name including a list of people with the first name. * Joel (surname), a surname * Joel (footballer, born 1904), Joel de Oliveira Monteiro, Brazilian football goalkeeper * Joel (footballer, born 1980), Joel Bertoti Padilha, Brazilian football centre-back * Joel (prophet), a prophet of ancient Israel ** Book of Joel, a book in the Jewish Tanakh, and in the Christian Bible, ascribed to the prophet * Joel, Georgia, a community in the United States * Joel, Wisconsin The Town of Clayton is located in Polk County, Wisconsin, Polk County, Wisconsin, United States. The population was 571 at the 2000 census. The Clayton (village), Wisconsin, Village of Clayton and the unincorporated communities of Joel and Richard ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Four-stroke
A four-stroke (also four-cycle) engine is an internal combustion (IC) engine in which the piston completes four separate strokes while turning the crankshaft. A stroke refers to the full travel of the piston along the cylinder, in either direction. The four separate strokes are termed: #Intake: Also known as induction or suction. This stroke of the piston begins at top dead center (T.D.C.) and ends at bottom dead center (B.D.C.). In this stroke the intake valve must be in the open position while the piston pulls an air-fuel mixture into the cylinder by producing vacuum pressure into the cylinder through its downward motion. The piston is moving down as air is being sucked in by the downward motion against the piston. #Compression: This stroke begins at B.D.C, or just at the end of the suction stroke, and ends at T.D.C. In this stroke the piston compresses the air-fuel mixture in preparation for ignition during the power stroke (below). Both the intake and exhaust valves are close ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gear Train
A gear train is a mechanical system formed by mounting gears on a frame so the teeth of the gears engage. Gear teeth are designed to ensure the pitch circles of engaging gears roll on each other without slipping, providing a smooth transmission of rotation from one gear to the next. Features of gears and gear trains include: * The gear ratio of the pitch circles of mating gears defines the speed ratio and the mechanical advantage of the gear set. * A planetary gear train provides high gear reduction in a compact package. * It is possible to design gear teeth for gears that are non-circular, yet still transmit torque smoothly. * The speed ratios of chain and belt drives are computed in the same way as gear ratios. See bicycle gearing. The transmission of rotation between contacting toothed wheels can be traced back to the Antikythera mechanism of Greece and the south-pointing chariot of China. Illustrations by the Renaissance scientist Georgius Agricola show gear trains with ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
