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Imme R100
The Imme R100 was a lightweight motorcycle made by Riedel AG from 1948 to 1951. It is noted for its simple and innovative design with many advanced features. With low cost and technical innovation, the R100 sold well, but reliability problems and low profit margins resulted in warranty costs driving Riedel AG into bankruptcy. The advanced specification of the Imme R100 caused it to be highly regarded. The R100 was one of the motorcycles included in " The Art of the Motorcycle" exhibition at the Solomon R. Guggenheim Museum in 1998 and is on permanent display at Barber Vintage Motorsports Museum. Concept, design and engineering Motorcycle engineer Norbert Riedel recognized the need for a simple and economical light motorcycle during Germany's recovery from the Second World War and began to design one. By the summer of 1947, a prototype frame had been built and tested. The spine frame was made from 40 mm steel tubing, as were the steering head, the single-sided front fork ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Prototype
A prototype is an early sample, model, or release of a product built to test a concept or process. It is a term used in a variety of contexts, including semantics, design, electronics, and software programming. A prototype is generally used to evaluate a new design to enhance precision by system analysts and users. Prototyping serves to provide specifications for a real, working system rather than a theoretical one. In some design workflow models, creating a prototype (a process sometimes called materialization) is the step between the formalization and the evaluation of an idea. A prototype can also mean a typical example of something such as in the use of the derivation 'prototypical'. This is a useful term in identifying objects, behaviours and concepts which are considered the accepted norm and is analogous with terms such as stereotypes and archetypes. The word ''prototype'' derives from the Greek , "primitive form", neutral of , "original, primitive", from πρῶτ� ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Suspension (vehicle)
Suspension is the system of tires, tire air, springs, shock absorbers and linkages that connects a vehicle to its wheels and allows relative motion between the two. Suspension systems must support both road holding/ handling and ride quality, which are at odds with each other. The tuning of suspensions involves finding the right compromise. It is important for the suspension to keep the road wheel in contact with the road surface as much as possible, because all the road or ground forces acting on the vehicle do so through the contact patches of the tires. The suspension also protects the vehicle itself and any cargo or luggage from damage and wear. The design of front and rear suspension of a car may be different. History An early form of suspension on ox-drawn carts had the platform swing on iron chains attached to the wheeled frame of the carriage. This system remained the basis for most suspension systems until the turn of the 19th century, although the iron c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Space Frame
In architecture and structural engineering, a space frame or space structure ( 3D truss) is a rigid, lightweight, truss-like structure constructed from interlocking struts in a geometric pattern. Space frames can be used to span large areas with few interior supports. Like the truss, a space frame is strong because of the inherent rigidity of the triangle; flexing loads (bending moments) are transmitted as tension and compression loads along the length of each strut. History Alexander Graham Bell from 1898 to 1908 developed space frames based on tetrahedral geometry. Bell's interest was primarily in using them to make rigid frames for nautical and aeronautical engineering, with the tetrahedral truss being one of his inventions. Max Mengeringhausen developed the space grid system called MERO (acronym of ''MEngeringhausen ROhrbauweise'') in 1943 in Germany, thus initiating the use of space trusses in architecture. The commonly used method, still in use has individual tubu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Luggage Carrier
A luggage carrier, also commonly called a rack, is a device attached to a bicycle to which cargo or panniers can be attached. This is popular with utility bicycles and touring bicycles. Bicycle luggage carriers may be mounted on the front or rear of a bicycle. The rear mount is more common. Racks on the front are mostly reserved for utility and cargo bikes. A special type of front rack is a low rider which is mainly used for bicycle touring. The term luggage carrier can also refer to a device with two wheels used to wheel luggage or something of similar weight from one place to another, similar to a dolly (hand truck) but lighter and usually able to be folded up. Mounting Bicycles may have eyelets, tapped with a standard thread, at the dropouts on the rear chainstays, and on the front fork blades. Mounting a bike rack is possible without these eyelets, but requires additional hardware. A style of rack clamps only to the seatpost, does not require eyelets or additional h ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fender (vehicle)
Fender is the American English term for the part of an automobile, motorcycle or other vehicle body that frames a wheel well (the fender underside). Its primary purpose is to prevent sand, mud, rocks, liquids, and other road spray from being thrown into the air by the rotating tire. Fenders are typically rigid and can be damaged by contact with the road surface. Sticky materials, such as mud, may adhere to the smooth outer tire surface, while smooth loose objects, such as stones, can become temporarily embedded in the tread grooves as the tire rolls over the ground. These materials can be ejected from the surface of the tire at high velocity as the tire imparts kinetic energy to the attached objects. For a vehicle moving forward, the top of the tire is rotating upward and forward, and can throw objects into the air at other vehicles or pedestrians in front of the vehicle. In British English, the fender is called the wing. (This may refer to either the front or rear fenders. How ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Benelli (motorcycles)
Benelli Q.J. is an Italian company, based in the city of Pesaro in the Marche region, that produces motorcycles and scooters. Since 2005 Benelli is owned by the Qianjiang Motorcycle, a Chinese company owned by the Geely Holding Group. Originally founded in 1911 in Pesaro, Benelli is the second oldest Italian motorcycle company still in business. Design, development and marketing activities are carried out at the Benelli QJ headquarters in Pesaro, Italy, in synergy with the parent company of Wenling China where motorcycles are produced. History From founding to World War II Benelli was established in Pesaro, Italy in 1911, which possibly makes it the oldest of Italian motorcycle factories in operation. (Moto Guzzi—the oldest motorcycle factory in non-stop operation—was established in 1921, and Peugeot is the world's oldest and still producing motorcycle factory due to establishing in 1898.) After losing her husband, the widow Teresa Boni Benelli invested all of the fam ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Motorcycle Transmission
A motorcycle transmission is a transmission created specifically for motorcycle applications. They may also be found in use on other light vehicles such as motor tricycles and quadbikes, go-karts, offroad buggies, auto rickshaws, mowers, and other utility vehicles, microcars, and even some superlight racing cars. Manual gearing Most manual transmission two-wheelers use a sequential gearbox. Most motorcycles (except scooters) change gears (of which they increasingly have five or six) by a foot-shift lever. On a typical motorcycle, either first or second gear can be directly selected from neutral, but higher gears may only be accessed in order – it is not possible to shift from second gear to fourth gear without shifting through third gear. A five-speed of this configuration would be known as "one down, four up" because of the placement of the gears with relation to neutral, though some motorcycle gearboxes and/or shift mechanisms can be reversed so that a "one up, four down" sh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hoffmann (motorcycle)
Hoffmann was a bicycle manufacturer in Ratingen-Lintorf, Germany. Between 1948 and 1954 the company also manufactured motorcycles. It made a range of models using engines from 125cc to 250cc made by ILO, and the Gouverneur, which had a transversely-mounted 248 cc flat twin four-stroke engine designed by Richard Küchen, and shaft drive. The Gouverneur was developed into the MP 250-2 and finally, in 1953, the S 300 model. From 1949 to 1954 Hoffmann also made at least 60,000 Vespa motor scooters under license. A licensing dispute brought this to an end in 1954. At the same time, Hoffmann also withdrew from making its own motorcycles, and had further legal problems with their microcar, the Auto-Kabine. Beginning Jakob Oswald Hoffmann moved his Solinger Bicycle Factory to Lintorf, near Düsseldorf, shortly after the end of World War II. In the immediate postwar era, the factory made household goods, tools, and bicycles. The factory began making motorcycles in 1948. Vespa pro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
DKW RT 125
The RT 125 was a German two-stroke motorcycle made by DKW in Zschopau in the 1930s, IFA and MZ in the 1950s and early 1960s, and DKW in Ingolstadt in the 1950s and 1960s. "RT" stands for "Reichstyp" or "National Model". In the 1930s DKW pioneered the Schnürle two-stroke loop scavenging process to dispense with the use of a deflector piston and improve efficiency of the combustion chamber. DKW also developed a highly efficient arrangement of transfer ports. These two features were included in the RT 125 to great commercial advantage. Competitor companies such as Adler and TWN copied the adoption of flat-topped pistons and strove to develop equally efficient transfer port arrangements without infringing DKW's patent. Copies and variants Copies of the RT 125 were built by at least eight different entities in at least six countries. War reparations After World War II the Soviet Union took plans, tooling and even several dozen personnel as war reparations to MMZ i ... [...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 sing ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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