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Ducati Desmoquattro Motorcycles
The Ducati Desmoquattro are water-cooled, four-valve engines from Ducati. They have been produced since 1985 in capacities from . Desmoquattro vs. Bipantah Castiglioni brothers from Cagiva bought Ducati in May 1985 and decided to start new investments in order to compete with Japanese firms. To do this they needed a new powerful engine, so they had a look into different proposals from technical department. The two best solutions were the Bipantah, a stillborn 994 cc air-cooled V4 and the ''Desmoquattro'', a liquid-cooled, multi-valve, fuel-injected evolution of 750 cc V-twin. After extensive technical discussions, they preferred ''Desmoquattro'' over ''Bipantah'', because the first could be easily installed inside the cradle of the existing models. The Early Desmoquattro (851 - 996S) The water-cooled Ducati Desmoquattro engine that has dominated World Superbike racing was introduced in 1986 with the ''Ducati 748 IE'' racer ridden by Virginio Ferrari, Juan Garriga and Marco L ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ducati Desmoquattro At 2009 Seattle International Motorcycle Show 2
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] |
Crankshaft
A crankshaft is a mechanical component used in a piston engine to convert the reciprocating motion into rotational motion. The crankshaft is a rotating shaft containing one or more crankpins, that are driven by the pistons via the connecting rods. The crankpins are also called ''rod bearing journals'', and they rotate within the "big end" of the connecting rods. Most modern crankshafts are located in the engine block. They are made from steel or cast iron, using either a forging, casting or machining process. Design The crankshaft located within the engine block, held in place via main bearings which allow the crankshaft to rotate within the block. The up-down motion of each piston is transferred to the crankshaft via connecting rods. A flywheel is often attached to one end of the crankshaft, in order to smoothen the power delivery and reduce vibration. A crankshaft is subjected to enormous stresses, in some cases more than per cylinder. Crankshafts for single-cylin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bike (magazine)
''Bike'' is a British motorcycling magazine that was established and edited by journalist Mark Williams in 1971, originally as a one-off ''Car'' magazine special. Taking a leaf out of ''Car'' magazine's book, ''Bike'' published "Giant Tests", namely, head-to-head comparison tests, which were innovative at the time. Before then, motorcycle journals and magazines would test bikes only individually and in isolation from other bikes. The first "Giant Test", in summer 1971, was a comparison between a BSA Rocket 3 and a Norton Commando. Mark Williams wrote a regular column entitled "Running out of Road". Other contributors included: LJK Setright, who wrote the "Cog-swapping" column; Jim Greening who wrote the "Short Circuits" column; and the pseudonymous "Hap Spoons" who wrote "Odds & Sods". For more than 30 years the magazine featured Paul Sample's full-page comic-strip '' Ogri'', but that transferred to '' Back Street Heroes'' magazine in the spring of 2010. ''Bike'' is publi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Butterfly Valve
A butterfly valve is a valve that isolates or regulates the flow of a fluid. The closing mechanism is a disk that rotates. Principle of operation Operation is similar to that of a ball valve, which allows for quick shut off. Butterfly valves are generally favored because they cost less than other valve designs, and are lighter weight so they need less support. The disc is positioned in the center of the pipe. A rod passes through the disc to an actuator on the outside of the valve. Rotating the actuator turns the disc either parallel or perpendicular to the flow. Unlike a ball valve, the disc is always present within the flow, so it induces a pressure drop, even when open. A butterfly valve is from a family of valves called quarter-turn valves. In operation, the valve is fully open or closed when the disc is rotated a quarter turn. The "butterfly" is a metal disc mounted on a rod. When the valve is closed, the disc is turned so that it completely blocks off the passageway. Wh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Throttle Body
A throttle is the mechanism by which fluid flow is managed by constriction or obstruction. An engine's power can be increased or decreased by the restriction of inlet gases (by the use of a throttle), but usually decreased. The term ''throttle'' has come to refer, informally, to any mechanism by which the power or speed of an engine is regulated, such as a car's accelerator pedal. What is often termed a ''throttle'' (in an aviation context) is also called a thrust lever, particularly for jet engine powered aircraft. For a steam locomotive, the valve which controls the steam is known as the regulator. Internal combustion engines In an internal combustion engine, the throttle is a means of controlling an engine's power by regulating the amount of fuel or air entering the engine. In a motor vehicle the control used by the driver to regulate power is sometimes called the throttle, accelerator, or gas pedal. For a gasoline engine, the throttle most commonly regulates the amount of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ducati 1098
The Ducati 1098 is a sport bike made by Ducati from 2007 to 2009, in three versions, the 1098, 1098S, and 1098R. The 1098 was succeeded by the 1198 in 2009, though the 1098R remained in production that year. The 1098 shares more design elements with the older 998 than with its predecessor the 999, such as horizontally placed headlights and a non-integrated exhaust system. Another carryover from its 916/998 heritage is the single-sided swingarm. The 1098 was designed by Ducati designer, Giandrea Fabbro. Performance The 1098/1098 S makes a manufacturer claimed , rear wheel, torque, rear wheel, and weighs . The 0-60 mph time is less than 3.0 seconds and 1/4 mile at 10.015 seconds at and top speed of . The 1098 R, with its larger displacement 1198 cc engine, makes a manufacturer claimed , torque. At the time of its release, these figures gave the 1098 the highest torque-to-weight ratio of any production sport bike ever made. Racing With the release of the 1098, Duc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ducati 749
The Ducati 749 is a 90° V-twin Desmodromic valve actuated engine sport bike built by Ducati Motor Holding between 2003 and 2006. Designed by Pierre Terblanche, the 749 was available as the 749, 749 Dark, 749S, and 749R. It shared many of its parts with the 999 999 or triple nine most often refers to: * 999 (emergency telephone number), a telephone number for the emergency services in several countries * 999 (number), an integer * AD 999, a year * 999 BC, a year Books * ''999'' (anthology) or ''999: T ..., with the exception of a slightly smaller 180/55 profile rear tire, smaller cylinders, and different cylinder heads, giving it a smaller displacement of 748 cc. This smaller engine is higher revving and produces a lower peak horsepower than the larger engine used in the 999. The 749S model, like the 999, incorporates features rarely found on production motorcycles, including adjustable rake (23.5° or 24.5°) and five-position adjustable rearset mounts. A limited n ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ducati 999
The Ducati 999 is a sport bike made by Ducati from 2003 to 2006. It superseded the Massimo Tamburini designed Ducati 916, Ducati 996 and Ducati 998 range of superbikes. This motorcycle enjoyed great success in World Superbike, and was raced in the series through the 2007 season, despite no longer being produced, pending rules changes by the series' governing body, FIM, to allow competition of the new Ducati 1098. The 999 was designed by Pierre Terblanche, amid much controversy over its styling. It is known as a high performance, race oriented motorcycle. With its traditional Ducati L Twin Desmodromic Valve actuated engine layout, it has a linear power delivery, with high power and torque figures available even at low RPM. Additionally, with its high spec suspension and trellis chassis, it is one of the finest handling motorcycles for its time. Subsequently, more powerful 999S and 999R versions were introduced, both capable of 0-62 mph (0-100 km/h) in under three sec ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ducati 998
The Ducati 998 is a sport bike made by Ducati from 2002 to 2004. It was the successor to the Ducati 996 and the final variation on the Ducati 916. The new Testastretta engine shared many similarities with the previous Desmoquattro engine in the 996, although it was completely new from the crankshaft up. Testastretta means narrow head and refers to a complete redesign of the cylinder heads. The desmodromic valve actuation method was retained. The 996 had a bore and stroke of . The bore and stroke of the 998 was more oversquare at . The included valve angle was reduced from 40 degrees on the 996 to 25 degrees on the 998. Valve sizes were increased, and the camshafts had slightly increased lift, but with shorter duration. Horsepower increased from 112 to 123. The 998R and non US 998S models had different crankcases with a deep oil sump. The standard 998 had crankcases which were very similar to the previous Desmoquattro. The non US 998S as well as the 998R had revised cam profiles w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Foot-pound Force
The foot-pound force (symbol: ft⋅lbf, ft⋅lbf, or ft⋅lb ) is a unit of Mechanical work, work or energy in the English Engineering Units, engineering and Foot–pound–second_system#force, gravitational systems in United States customary units, United States customary and Imperial units, imperial units of measure. It is the energy transferred upon applying a force of one pound-force (lbf) through a linear displacement (vector), displacement of one foot (unit), foot. The corresponding SI unit is the joule. Usage The foot-pound is often used to specify the muzzle energy of a bullet in small arms ballistics, particularly in the United States. The term ''foot-pound'' is also used as a unit of torque (see ''pound-foot (torque)''). In the United States this is often used to specify, for example, the tightness of a fastener (such as screws and nut (hardware), nuts) or the output of an engine. Although they are dimensional analysis, dimensionally equivalent, energy (a scalar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kilogram-force
The kilogram-force (kgf or kgF), or kilopond (kp, from la, pondus, lit=weight), is a non-standard gravitational metric unit of force. It does not comply with the International System of Units (SI) and is deprecated for most uses. The kilogram-force is equal to the magnitude of the force exerted on one kilogram of mass in a gravitational field (standard gravity, a conventional value approximating the average magnitude of gravity on Earth). That is, it is the weight of a kilogram under standard gravity. Therefore, one kilogram-force is by definition equal to .NISTbr>''Guide for the Use of the International System of Units (SI)''Special Publication 811, (1995) page 51 Similarly, a gram-force is , and a milligram-force is . Kilogram-force is a non-standard unit and is classified in the International System of Units (SI) as a unit that is not accepted for use with SI. History The gram-force and kilogram-force were never well-defined units until the CGPM adopted a ''standard accele ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Newton Metre
The newton-metre (also newton metre or newton meter; symbol N⋅m or N m) is the unit of torque (also called ) in the International System of Units (SI). One newton-metre is equal to the torque resulting from a force of one newton applied perpendicularly to the end of a moment arm that is one metre long. The nonstandard notation ''Nm'' occurs in some fields. The unit is also used less commonly as a unit of work, or energy, in which case it is equivalent to the more common and standard SI unit of energy, the joule.For example: Eshbach's handbook of engineering fundamentals - 10.4 Engineering Thermodynamics and Heat Transfer "In SI units the basic unit of energy is newton-metre". In this usage the metre term represents the distance travelled or displacement in the direction of the force, and not the perpendicular distance from a fulcrum as it does when used to express torque. This usage is generally discouraged, since it can lead to confusion as to whether a given quantit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
