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Yamaha TZ 250
The Yamaha TZ 250 was a commercially available racing motorcycle with a watercooled, two-stroke, 250 cc engine produced by the Japanese manufacturer Yamaha. The basis of the production-volume racer was the OW17 factory machine from Yamaha, which was used in the motorcycle world championship from 1973 to 1990, and with which Dieter Braun became motorcycle world champion in the class up to 250 cm³ in 1973. The almost identical Yamaha TZ 350 was manufactured with a larger bore (64 instead of 54 mm). Background and technology The water-cooled TZ series of production-volume racing machines in the up to 250 cm³ class was presented in June 1973 and replaced the air-cooled variants of the TD1 and TD2 series. The bore-stroke ratio of 54 × 54 mm was adopted from the TD 3, which appeared in 1972. With the model year 1981 (TZ 250 H) a completely new design was brought onto the market. Instead of a modified standard housing, a sand-cast housing specially developed for racing was used ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1977 Yamaha TZ 250
Events January * January 8 – Three bombs explode in Moscow within 37 minutes, killing seven. The bombings are attributed to an Armenian separatist group. * January 10 – Mount Nyiragongo erupts in eastern Zaire (now the Democratic Republic of the Congo). * January 17 ** 49 marines from the and are killed as a result of a collision in Barcelona harbour, Spain. * January 18 ** Scientists identify a previously unknown bacterium as the cause of the mysterious Legionnaires' disease. ** Australia's worst railway disaster at Granville, a suburb of Sydney, leaves 83 people dead. ** SFR Yugoslavia Prime minister Džemal Bijedić, his wife and 6 others are killed in a plane crash in Bosnia and Herzegovina. * January 19 – An Ejército del Aire CASA C-207C Azor (registration T.7-15) plane crashes into the side of a mountain near Chiva, on approach to Valencia Airport in Spain, killing all 11 people on board. * January 20 – Jimmy Carter is sworn in as the 39th President of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Yamaha Motor Company
is a Japanese multinational manufacturer of motorcycles, marine products such as boats and outboard motors, and other motorized products. The company was established in 1955 upon separation from Yamaha Corporation (however, Yamaha Corporation is still the largest private company shareholder with 9.92%, as of 2019), and is headquartered in Iwata, Shizuoka, Japan. The company conducts development, production and marketing operations through 109 consolidated subsidiaries as of 2012. Led by Genichi Kawakami, the company's founder and first president, Yamaha Motor spun off from musical instrument manufacturer Yamaha Corporation in 1955 and began production of its first product, the YA-1 125cc motorcycle. It was quickly successful and won the 3rd Mount Fuji Ascent Race in its class. The company's products include motorcycles, scooters, motorized bicycles, boats, sail boats, personal water craft, swimming pools, utility boats, fishing boats, outboard motors, 4-wheel ATVs, recreat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
V-twin Engine
A V-twin engine, also called a V2 engine, is a two-cylinder piston engine where the cylinders share a common crankshaft and are arranged in a V configuration. Although widely associated with motorcycles (installed either transversely or longitudinally), V-twin engines have also been used for industrial engines and in several small cars. The V-twin design dates back to the late 1880s. Origins One of the first V-twin engines was built by Gottlieb Daimler in 1889. It was used as a stationary engine, for boats and in the Daimler Stahlradwagen ("steel-wheeled car"), Daimler's second car. The engine was also manufactured under licence in France by Panhard et Levassor. An early V-twin engined motorcycle was produced in November 1902 by the Princeps AutoCar Company in the United Kingdom. The following year, V-twin motorcycles were produced by Eclipse Motor & Cycle Co in the United Kingdom (the ''XL-ALL'' model), Glenn Curtiss in the United States, and NSU Motorenwerke in Germany. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Two-stroke Engine
A two-stroke (or two-stroke cycle) engine is a type of internal combustion engine that completes a power cycle with two strokes (up and down movements) of the piston during one power cycle, this power cycle being completed in one revolution of the crankshaft. A four-stroke engine requires four strokes of the piston to complete a power cycle during two crankshaft revolutions. In a two-stroke engine, the end of the combustion stroke and the beginning of the compression stroke happen simultaneously, with the intake and exhaust (or scavenging) functions occurring at the same time. Two-stroke engines often have a high power-to-weight ratio, power being available in a narrow range of rotational speeds called the power band. Two-stroke engines have fewer moving parts than four-stroke engines. History The first commercial two-stroke engine involving cylinder compression is attributed to Scottish engineer Dugald Clerk, who patented his design in 1881. However, unlike most later two-s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Brake Disc
A disc brake is a type of brake that uses the calipers to squeeze pairs of pads against a disc or a "rotor" to create friction. This action slows the rotation of a shaft, such as a vehicle axle, either to reduce its rotational speed or to hold it stationary. The energy of motion is converted into waste heat which must be dispersed. Hydraulically actuated disc brakes are the most commonly used form of brake for motor vehicles, but the principles of a disc brake are applicable to almost any rotating shaft. The components include the disc, master cylinder, and caliper (which contains a cylinder and two brake pads) on both sides of the disc. Design The development of disc-type brakes began in England in the 1890s. In 1902, the Lanchester Motor Company designed brakes that looked and operated in a similar way to a modern disc-brake system even though the disc was thin and a cable activated the brake pad. Other designs were not practical or widely available in cars for another 60 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Grand Prix Motorcycle Racing
Grand Prix motorcycle racing is the premier class of motorcycle road racing events held on road circuits sanctioned by the Fédération Internationale de Motocyclisme (FIM). Independent motorcycle racing events have been held since the start of the twentieth century and large national events were often given the title Grand Prix. The foundation of the Fédération Internationale de Motocyclisme as the international governing body for motorcycle sport in 1949 provided the opportunity to coordinate rules and regulations in order that selected events could count towards official World Championships. It is the oldest established motorsport world championship. Grand Prix motorcycles are purpose-built racing machines that are unavailable for purchase by the general public and unable to be ridden legally on public roads. This contrasts with the various production-based categories of racing, such as the Superbike World Championship and the Isle of Man TT Races that feature modified ve ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tetsuya Harada Yamaha TZ250M (6391097367)
Tetsuya is a masculine Japanese given name. Possible writings Tetsuya can be written using different kanji characters and can mean: * 哲也, "philosophy, to be" * 鉄也, "iron, to be" * 哲哉, "philosophy, alas" * 徹也, "devotion, to be" * 徹矢, "penetrate, arrow" * 鉄弥, "iron, increasingly" The name can also be written in hiragana てつや or katakana テツヤ. People with the name *Tetsuya (dancer) (born 1981), Japanese dancer * Tetsuya (musician) (born 1969), Japanese musician *, Japanese footballer * Tetsuya Asano (浅野 哲也, born 1967) is a former Japanese football player and manager * Tetsuya Chiba (てつや, born 1939), Japanese manga artist * Tetsuya Chikushi (哲也, 1935–2008), Japanese newscaster *Tetsuya Endo (other), multiple people * Tetsuya Enomoto (哲也, born 1983), Japanese football player * Tetsuya Fujii (哲也), a Japanese astronomer *, Japanese shogi player * Tetsuya Theodore "Ted" Fujita (哲也, 1920–1998), Japanese ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Motorcycle Racing
Motorcycle racing (also called moto racing and motorbike racing) is the motorcycle sport of racing motorcycles. Major varieties include 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. Categories The FIM classifies motorcycle racing in the following four main categories. Each category has several sub categories. Road racing Road racing is a form of motorcycle racing held on paved road surfaces. The races can be held either on a purpose-built closed circuit or on a street circuit utilizing temporarily closed public roads. Traditional road racing Historically, "road racing" meant a course on closed public roads. This was once commonplace but currently only a few such circuits have survived, mostly in Europe. Races take place on public roads which have been temporarily closed to the public by legal orders from the local legislature. Two champ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Watercooled
Cooling tower and water discharge of a nuclear power plant Water cooling is a method of heat removal from components and industrial equipment. Evaporative cooling using water is often more efficient than air cooling. Water is inexpensive and non-toxic; however, it can contain impurities and cause corrosion. Water cooling is commonly used for cooling automobile internal combustion engines and power stations. Water coolers utilising convective heat transfer are used inside high-end personal computers to lower the temperature of CPUs. Other uses include the cooling of lubricant oil in pumps; for cooling purposes in heat exchangers; for cooling buildings in HVAC and in chillers. Mechanism Advantages Water is inexpensive, non-toxic, and available over most of the earth's surface. Liquid cooling offers higher thermal conductivity than air cooling. Water has unusually high specific heat capacity among commonly available liquids at room temperature and atmospheric pressure allowing e ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dieter Braun
Dieter Braun (born 2 February 1943 in Ulm, Bavaria) is a former road racer of Grand Prix solo motorcycles from Germany. He won the 1970 FIM 125cc World Championship for Suzuki. In 1973, he rode a Yamaha TZ 250 to the 250 cc FIM world championship. Braun's victory at the 1970 Isle of Man TT was notable because he was one of only seven riders to have won an Isle of Man TT race in their first attempt. Due to the circuit's 37.7 mile length, it usually takes competitors two or three attempts before they learn its nuances. He is also known for an incident that occurred immediately after he won the East German Grand Prix in the 1971 season. As the West German national anthem was being played during the winner's ceremony, the East German crowd began singing the words to the anthem. The East German government reacted by making the following year's East German Grand Prix an invitation only race, and in 1973, the race was stricken from the Grand Prix calendar. He also raced in c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Yamaha TZ 350
The Yamaha TZ 350 was a racing motorcycle produced by the Yamaha Motor Company from 1973 to 1981 for competition in the Grand Prix motorcycle racing series. The motorcycle was powered by a 350 cc two stroke engine. __TOC__ Model history Production of the motorcycle started in 1973 with Model A (60 bhp @9,500rpm) and ended 1981 with Model H (72 bhp @ 11,000rpm) when the GP series came to an end. Production Racer were series manufactured racing bikes. Two Yamaha TZ 350 models are part of the motorcycle collection of the Technikmuseum Speyer The Technik Museum Speyer is a technology museum in Speyer (Rhineland-Palatinate), Germany. 208 History The museum was opened in 1991 as a sister museum of the Auto & Technik Museum Sinsheim and is run by a registered alliance called "Auto & Te .... Yamaha often leveraged the marketing of their RD and RZ series road motorcycles by referencing the TZ series. See also: RD250, RD350, RD400, RZ250, RZ350. The TZ motors provided the i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Yamaha TD2
Yamaha TD2 is an air-cooled road racing motorcycle made by Yamaha produced between 1969 and 1970. The equivalent 350cc version was called TR2 Development The TD1 bikes had a significant impact on British 250cc class racing in the middle-1960s which was historically contested by single-cylinder engines, some with ageing designs. Some TD1s were overbored to 251cc, thus being eligible for the 350cc class Building on the TD1 successes, the arrival of TD2 together with the TR2 350cc version which could be overbored to around 352cc, making it eligible for the 500cc class, announced the 'death knell' of the traditional 350cc and 500cc class single-cylinder four stroke engines manufactured to 1950s designs The new over-the-counter Yamahas were smaller, lighter with greater maneuverability and consequently easier braking. The engines were simpler to build - but not significantly easier to maintain as four-stroke singles potentially lasted an entire season - offering a small compact uni ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
