Related Research Articles
Ducati Motor Holding S.p.A. is the motorcycle-manufacturing division of Italian company Ducati, headquartered in Bologna, Italy. The company is owned by German automotive manufacturer Audi through its Italian subsidiary Lamborghini, with Audi itself owned by the Volkswagen Group.
A two-strokeengine is a type of internal combustion engine that completes a power cycle with two strokes of the piston during only one crankshaft revolution. This is in contrast to a "four-stroke engine", which 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 functions occurring at the same time.
Motorenwerke Zschopau GmbH is a German motorcycle manufacturer located in Zschopau, Saxony. The acronym MZ since 1956 stands for Motorenwerke Zschopau GmbH. From 1992 to 1999 the company was called MuZ, an acronym for Motorrad und Zweiradwerk.
Yamaha Motor Co., Ltd. is a Japanese 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, and is headquartered in Iwata, Shizuoka, Japan. The company conducts development, production and marketing operations through 109 consolidated subsidiaries as of 2012.
The Suzuki GS series was Suzuki Motor Corporation's first full range of 4-stroke powered road motorcycles, having previously almost exclusively manufactured 2-stroke machines. Suzuki had produced the 4-stroke Colleda COX 125cc and 93cc 4-stroke single-cylinder machines in 1955 however the rest of Suzuki's production from 1952 to 1976 had been increasingly sophisticated two-stroke road machines, whose ultimate expression was the 750cc 3-cylinder water-cooled GT750.
The two-stroke power valve system is an improvement to a conventional two-stroke engine that gives a high power output over a wider RPM range.
A motorcycle engine is an engine that powers a motorcycle. Motorcycle engines are typically two-stroke or four-stroke internal combustion engines, but other engine types, such as Wankels and electric motors, have been used.
The Yamaha FZR1000 is a motorcycle produced by Yamaha from 1987 to 1995. The 1989 version, crowned the "Bike of the Decade" by Cycle World, had 0-60 mph acceleration time of 2.9 seconds, and a top speed of over 167 mph (269 km/h).
Bucket Racing is a discipline of motorcycle sport, which is very popular in Australia and New Zealand due to the low cost of competing.
The Yamaha TZR250 is a motorcycle manufactured and produced by the Japanese motorcycle manufacturer Yamaha between 1986 and 1995.
The Yamaha SR400 (1978–2018) and SR500 (1978–1999) are single-cylinder, air-cooled, two-passenger motorcycles manufactured in Japan by Yamaha Motor Company as a street version of the Yamaha XT500, with a standard riding posture and styling resembling the Universal Japanese Motorcycles of the 1970s. The two models differ by their engines: the SR400 engine has a lower displacement, achieved with a different crankshaft and shorter piston stroke and both models feature only kickstarting, i.e., no electric starter.
The Yamaha WR450F is an off-road motorcycle made by Yamaha Motor Company. It currently has a 450 cc (27 cu in) liquid-cooled single-cylinder engine. First offered in 1998 at 400cc, it shared many components and design concepts with the YZ400F motocross model. It is basically the racing YZ450F detuned slightly for more controllable power, with a headlight and lighting coil, softer suspension, a kickstand, lower noise specifications, larger radiators and lower emissions. The WR in the name indicates a wide-ratio gear box common to most enduro or trail bikes and stands in contrast to the close-ratio gearbox essential to a motocross racer. Over the years the WR has benefited from the advances made in the YZ motocross version gaining displacement and advancements such as an aluminum frame and improved suspension. Over much of its life the weight of the WR450F has remained fairly constant ranging from 244 to 249 pounds dry weight.
The Yamaha YZ125 is a motocross racing motorcycle with a two-stroke 124.9 cc (7.62 cu in) displacement single-cylinder engine made by Yamaha since 1974. It is available to the public. For the first two years it was made with dual rear shocks, then changing to a monoshock. The YZ125 has been ridden to five AMA National Motocross Championships, and multiple AMA Regional Supercross Championships.
The Yamaha YZ450F is a four-stroke racing motocross bike built by Yamaha Motor Corporation. It was the successor to the previous YZ426F which was discontinued in 2003. It is credited by Cycle World and Dirt Rider magazines as the bike that started the four-stroke dirt bike revolution. The 2006 YZ250F and YZ450F were the first production motorcycles equipped with titanium suspension springs.
The Aprilia RS50 is a sport moped made by Aprilia. The model made until 2005 was powered by a single cylinder two-stroke aluminium cylinder block, liquid cooled 49.7 cc (3.03 cu in) Motori-Minarelli AM6 engine. The new model, made since 2006, uses a single cylinder two-stroke aluminium cylinder block, liquid cooled 49.9 cc (3.05 cu in) engine made by Derbi, the D50B0. The bike is popular in countries that have restrictions on motorcycle engine size at specific ages. In restricted form the RS50 is capable of speeds of 50 km/h (30 mph), as per the laws in many European countries for those aged 16. In derestricted form, the 1997 model was tested at a speed of 105 km/h (65 mph). This and other similar machines such as the Derbi GPR 50 and Yamaha TZR50 have also been popular choices as a more adult-sized option for MiniGP racing, which is otherwise more commonly participated in by riders of smaller bikes such as the Honda NSR50.
The Yamaha RD500LC is a high-performance, two-stroke sports motorcycle, also known as the RZ500 in Canada and Australia. A lightened but detuned version known as the RZV500R was developed for the Japanese home market. Strict United States Environmental Protection Agency regulations meant that the RZ500 was not available for sale in that country. Produced for a short period between 1984 and 1986 it has become a sought after collector's machine.
The Yamaha FZ750 is a sports motorcycle produced by Yamaha Motor Corporation between 1985 and 1991. The FZ750 is notable for several reasons, perhaps the most radical being the 5-valve cylinder head with a radial arrangement. This became something of a Yamaha trademark, and although disputed in recent years, it was argued that for a given lift, the 3 inlet valves flowed more effectively than conventional twin inlet valves. What was indisputable was that their light weight allowed for faster opening speeds, and softer valve springs, all contributing to theoretical increases in engine speed and thus power outputs. The bikes were known for their linear power delivery, and topped out at 140 mph. Yamaha also designed the motor to have a forward-inclined cylinder block, to effectively lower the centre of gravity. As a result, the FZ750 ran a relatively long wheelbase, which hampered it when used for road racing. What was clear was that Yamaha had considered the engine design in the overall package, rather than as had happened before, when engines were created, and then somehow bundled into a chassis. The FZ750 show-cased Yamaha's design skills.
The Yamaha TX500 is a two-cylinder standard motorcycle built by Yamaha and sold in 1973 and 1974. Early models closely resembled the Triumph Bonneville in style. In 1975 the bike was renamed XS500 and then continued to be updated until 1978 when sales ended in the USA. In Europe, the model was available through 1980.
The 2006 Aprilia RX/SX 50 is a street/off-road motorcycle widely produced by Aprilia. It is powered by a six-speed, carburetor-fuelled, nikasil-lined and cast iron single-cylinder two-stroke engine manufactured by Derbi/Piaggio.
A sport moped is a moped that resembles a sport bike and often performs better than standard mopeds. They were created to circumvent UK legislation, called the "Sixteeners Laws", aimed at taking young motorcycle riders off the road. The new laws, introduced in 1971 by Conservative Party Minister for Transport John Peyton, forbade 16-year-olds from riding motorcycles of 250 cc (15 cu in) capacity, thus limiting them to 50 cc machines until they turned 17.
References
- ↑ "GPR 125 (2005 - present) review". Visordown. 1 January 2005. Retrieved 14 May 2019.
- 1 2 "DERBI GPR125 (2005-2009) Review". Motorcycle News. 23 November 2006. Retrieved 13 May 2019.
- 1 2 "DERBI GPR125 (2010-on) Review". Motorcycle News. 23 July 2010. Retrieved 13 May 2019.
- ↑ "2013 Derbi GPR 125". www.topspeed.com. 30 June 2013. Retrieved 14 May 2019.
