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Big-bang Firing Order
A big bang engine is an unconventional engine designed so that some of the power strokes occur simultaneously or in close succession. This is achieved by changing the ignition timing, changing or re-timing the camshaft, and sometimes in combination with a change in crankpin angle. The goal is to change the power delivery characteristics of the engine. A regular firing multi-cylinder engine fires at approximately even intervals, giving a smooth-running engine. Because a big-bang engine has uneven power delivery, they tend to run rougher and generate more vibration than an even-firing engine. Twin-cylinder engines Parallel twins The classic British parallel-twins ( BSA, Triumph, Norton, AJS & Matchless) all had 360° crankshafts that, compared to a single, gave twice as many ignition pulses which were evenly spaced. However, the 360 twin had a mechanical primary engine balance that was no better than a single. By contrast, Japanese parallel twins of the 1960s (such as the 196 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Power Stroke (engine)
In the context of an internal combustion engine, the term stroke has the following related meanings: * A phase of the engine's cycle (e.g. compression stroke, exhaust stroke), during which the piston travels from top to bottom or vice versa. * The type of power cycle used by a piston engine (e.g. two-stroke engine, four-stroke engine). * "Stroke length", the distance travelled by the piston during each cycle. The stroke length––along with bore diameter––determines the engine's displacement. Phases in the power cycle Commonly used engine phases or strokes (i.e. those used in a four-stroke engine) are described below. Other types of engines can have very different phases. Induction-intake stroke The induction stroke is the first phase in a four-stroke (e.g. Otto cycle or Diesel cycle) engine. It involves the downward movement of the piston, creating a partial vacuum that draws a air-fuel mixture (or air alone, in the case of a direct injection engine) into the combusti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Triumph Thunderbird (2009)
The Triumph Thunderbird is Triumph motorcycle made in Hinckley, England, and sold since June 2009. The name "Thunderbird" is revived from a previous Triumph three-cylinder 885 cc bike. The name was previously applied to a single carburettor version of the 650cc twin Bonneville produced in the mid-1960s for police work. The final iteration was the Thunderbird Sport, last made in 2004. Design The Thunderbird is a cruiser with a large 200/50 R17 rear tyre. Design was by Tim Prentice in California. The DOHC eight-valve parallel-twin engine has two balance shafts and a 270° crank, which imitates the sound and feel of a V-twin. The engine was originally intended to be modular, namely "two-thirds of" a Triumph Rocket III engine; but after four years of development, the only parts in common are the valves. Power output is and torque is . The engine has two spark plugs per cylinder, which gives better combustion, resulting in lower fuel consumption, cleaner exhaust emis ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Harley-Davidson
Harley-Davidson, Inc. (H-D, or simply Harley) is an American motorcycle manufacturer headquartered in Milwaukee, Wisconsin, United States. Founded in 1903, it is one of two major American motorcycle manufacturers to survive the Great Depression along with its historical rival, Indian Motorcycles.Automotive – RSS Feed . ''Popular Mechanics''. Retrieved July 7, 2011. The company has survived numerous ownership arrangements, subsidiary arrangements, periods of poor economic health and product quality, and intense global competition to become one of the world's largest motorcycle manufacturers and an iconic brand widely known for its loyal following. There are owner clubs and events worldwide, as well as a company-sponsored, brand-focused museum. Harley-Davidson is ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aprilia
Aprilia is an Italian motorcycle manufacturer founded immediately after World War II in Noale, Italy, by Alberto Beggio. The company started as a manufacturer of bicycles and moved on to manufacture scooters and small-capacity motorcycles. In more recent times Aprilia has produced large sportbikes such as the 1,000 cc V-twin RSV Mille and the V4 RSV4. Aprilia has supported a strong motorsport competition program beginning with motocross racing and then a world championship-winning road racing program. The company was acquired by Piaggio in 2004. History Aprilia was founded after the Second World War by Cavaliere Alberto Beggio as a bicycle production factory at Noale, Italy, in the province of Venice. Alberto’s son, Ivano Beggio, took over the helm of the company in 1968 and constructed a 50 cc "motorcycle". The first production Aprilia mopeds were named Colibrì, Daniela and Packi. Aprilia later produced a motocross bike in 1970 called the Scarabeo. Produced ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
KTM 1290 Super Duke R
The KTM 1290 Super Duke R is a 1301 cc 75° V-twin engine, naked motorcycle from the Austrian manufacturer KTM. With the update in 2017 the motor is the most powerful LC8 engine ever built by KTM. Design The KTM 1290 Super Duke R is a naked bike. The 2014–2016 models suspension was considered to be too soft but the 2017 update has addressed this with stiffer springs. The 2016 model had compression ratio of 13.2:1 and 2017 model has increased compression ratio to 13.6:1. The 2017 model comes with Cruise control as standard and has upgraded electronics such as lean angle sensitive traction control, ride by wire, and optional track mode along with previous model's cornering ABS, quickshifter, riding modes etc. Performance For 2014 model, it had acceleration of 0–60 mph in 2.6 seconds, 0–124 mph in 7.2 seconds, braking distance of 99.1 feet from 60–0 mph with ABS, and 138.5 feet from 60–0 mph without ABS. The 2014 model produces maximum of 180 hp and 106 lb-ft o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
KTM 790 Duke
The KTM 790 Duke is a naked parallel-twin motorcycle, manufactured by KTM from 2017. The Duke's liquid cooled eight-valve DOHC engine uses a 285° crankshaft in order to mimic KTM's 75° V-Twins. Its power output is 105 bhp. The Duke is KTM's first parallel-twin bike; previously the factory had produced only singles and V-twins. Released in 2018 for the European market, KTM propose to release the Duke as a 2019 model to the US market in late 2018. Starting in 2021, this new model will be produced in China. It appears that no changes will be made to KTM's warranty, which covers the lesser of two years or twenty-four thousand miles, and guarantees the frame, swingarm, ignition system, engine parts inside the crankcase. The Duke is also the first middleweight naked with an inertial measurement unit within its electronics that include ride-by-wire, fuel modes, and multi-level traction control. It also includes a bi-directional quickshifter. With a dry weight of 169 kg, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mazda R360
The Mazda R360 is a kei car manufactured and marketed by Mazda as the company's first passenger car — a two-door, four-seat coupé. Introduced in 1960, the R360 featured a wheelbase, weighed and was powered by a rear-mounted air-cooled 356 cc V-twin engine producing and of torque. The car was capable of and featured a 4-speed manual or two-speed automatic transmission. The suspension, front and rear, was rubber "springs" and torsion bars. Within a few years of introducing the R360, Mazda had captured much of the lightweight (kei car) market in Japan. The R360 was augmented by the Mazda P360 "Carol" two-door and four-door sedan in 1962. Production of the R360 lasted for six years. Specification There were two variants of the Mazda R360, officially known as KRBB and KRBC. Both variants were very similar visually, however the first generation, KRBB came with a 4-speed manual transmission, whereas the second generation KRBC came with a 2-speed "TORQ DRIVE" automatic t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Honda RC51
The Honda RC51, also known as the RVT1000R (in the United States) or VTR1000 SP1 (Europe and Australia), is a 90° V-twin motorcycle produced by Honda from 2000 to 2006. Built by Honda to prove a point that Honda could outsmart Ducati on the track using a V-Twin. Mechanicals and chassis The engine is a 999cc dual overhead cam V-twin unit with two fuel injectors and four valves per cylinder. Power is delivered to the rear wheel by a close-ratio, six-speed transmission. The chassis is constructed from aluminium alloy, being a twin-spar design. Mitchel 1985: 204 The RC51 is a racing superbike which benefits from gearbox sprocket changes for street use. Factory RC51s were highly geared for top speed performance. History The RC51 was designed as the motorcycle to be used by Honda's racing teams in the Superbike World Championship. The 2000–2001 models are designated SP1, while the 2002–2006 models are designated SP2 (the latter having updated fuel injection and suspension sy ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Suzuki SV650
The Suzuki SV650 and variants are street motorcycles manufactured since 1999 for the international market by the Suzuki Motor Corporation, featuring a mid-sized V-twin engine and medium performance components. In 2009, Suzuki replaced the naked SV650 with the SFV650 Gladius. In 2016, the Gladius name was discontinued and the 2017 model was reverted to SV650. First generation (1999–2002) Suzuki introduced the SV650 in 1999 as a budget entry in the emerging naked bike market and featured both naked and fully faired versions. The bike provided a sporty though easily manageable ride. The combination of light weight, rigid chassis, strong handling, and the V-twin's strong mid-range torque appealed to beginner and experienced riders alike. The 2003 SV1000 was marketed as a bigger alternative to the second generation SV650. The SV650 immediately became popular, but American buyers wanted the sportier 'S' version that featured lower handlebars, higher foot pegs and a bikini ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Moto Guzzi
Moto Guzzi is an Italian motorcycle manufacturer and the oldest European manufacturer in continuous motorcycle production. Established in 1921 in Mandello del Lario, Italy, the company is noted for its historic role in Italy's motorcycling manufacture, its prominence worldwide in motorcycle racing, and industry innovations—including the first motorcycle centre stand, wind tunnel and eight-cylinder engine. Since 2004, Moto Guzzi has been an ''unico azionista'', a wholly owned subsidiary, and one of seven brands owned by Piaggio & C. SpA, Europe's largest motorcycle manufacturer and the world's fourth largest motorcycle manufacturer by unit sales. The company's motorcycles are noted for their air-cooled 90° V-twin engines with a longitudinal crankshaft orientation where the engines' transverse cylinder heads project prominently on either side of the motorcycle. History Similar to other storied motorcycle manufacturers that have survived for decades, Moto Guzzi has experie ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ducati
Ducati Motor Holding S.p.A. () is the motorcycle-manufacturing division of Italian company Ducati, headquartered in Bologna, Italy. The company is directly owned by Italian automotive manufacturer Lamborghini, whose German parent company is Audi, itself owned by the Volkswagen Group. History In 1926 Antonio Cavalieri Ducati and his three sons, Adriano, Marcello, and Bruno, founded ''Società Scientifica Radiobrevetti Ducati'' (SSR Ducati) in Bologna to produce vacuum tubes, condensers and other radio components. In 1935 they had become successful enough to enable construction of a new factory in the Borgo Panigale area of the city. Production was maintained during World War II, despite the Ducati factory being a repeated target of Allied bombing. It was finally destroyed by around 40 Consolidated B-24 Liberators on 12 October 1944 as part of the United States Army Air Forces's Operation Pancake, which involved some 700 aircraft flying from airfields in the Province of Foggia. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aprilia RS660
Aprilia is an Italian motorcycle manufacturer founded immediately after World War II in Noale, Italy, by Alberto Beggio. The company started as a manufacturer of bicycles and moved on to manufacture scooters and small-capacity motorcycles. In more recent times Aprilia has produced large sportbikes such as the 1,000 cc V-twin RSV Mille and the V4 RSV4. Aprilia has supported a strong motorsport competition program beginning with motocross racing and then a world championship-winning road racing program. The company was acquired by Piaggio in 2004. History Aprilia was founded after the Second World War by Cavaliere Alberto Beggio as a bicycle production factory at Noale, Italy, in the province of Venice. Alberto’s son, Ivano Beggio, took over the helm of the company in 1968 and constructed a 50 cc "motorcycle". The first production Aprilia mopeds were named Colibrì, Daniela and Packi. Aprilia later produced a motocross bike in 1970 called the Scarabeo. Produce ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
