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Shaft-driven Bicycle
A shaft-driven bicycle is a bicycle that uses a drive shaft instead of a chain to transmit power from the pedals to the wheel. Shaft drives were introduced in the 1880s, but were mostly supplanted by chain-driven bicycles due to the gear ranges possible with sprockets and derailleurs. Around the 2000s, due to advancements in internal gear technology, a small number of modern shaft-driven bicycles have been introduced. Shaft-driven bikes have a large bevel gear where a conventional bike would have its chain ring. This meshes with another bevel gear mounted on the drive shaft. The use of bevel gears allows the axis of the drive torque from the pedals to be turned through 90 degrees. The drive shaft then has another bevel gear near the rear wheel hub which meshes with a bevel gear on the hub where the rear sprocket would be on a conventional bike, and canceling out the first drive torque change of axis. The 90-degree change of the drive plane that occurs at the bottom bracket a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rohloff
Rohloff AG is a German company from Fuldatal near Kassel that manufactures hub gears, bicycle chains and tools that are known for their durability and high performance. The company's logo is a black silhouette of a raven on a yellow background. History Rohloff AG was founded in 1986 and began by producing a high-tech, premium priced bicycle chain, the SLT 99. Sales of this chain generated revenues of €1m in 1991, and approximately €0,5m annually from 1992 to 1998. Development of Rohloff Speedhub 500/14 While at the Tour de France road race in France in 1994, the Rohloffs went bicycling on the beach in France. The bikes got stuck in the sand, and the primitive derailleur gear systems would not work properly. This triggered Bernhard Rohloff to develop a new internally geared hub. At the 1996 IFMA in Cologne, Rohloff announced a 14-speed gear hub with a weight of 1700 grams. At the time, the gear hub with the greatest number of speeds was the unreliable 3700 gra ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bevel Gear
Bevel gears are gears where the axes of the two shafts intersect and the tooth-bearing faces of the gears themselves are conically shaped. Bevel gears are most often mounted on shafts that are 90 degrees apart, but can be designed to work at other angles as well. The pitch surface of bevel gears is a cone, known as a pitch cone. Bevel gears change the axis of rotation of rotational power delivery and are widely used in mechanical settings. Introduction Two important concepts in gearing are pitch surface and pitch angle. The pitch surface of a gear is the imaginary toothless surface that you would have by averaging out the peaks and valleys of the individual teeth. The pitch surface of an ordinary gear is the shape of a cylinder. The pitch angle of a gear is the angle between the face of the pitch surface and the axis. The most familiar kinds of bevel gears have pitch angles of less than 90 degrees and therefore are cone-shaped. This type of bevel gear is called external ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Folding Bicycle
A folding bicycle is designed to be compacted into a smaller, more manageable size or shape, making it easier to store or carry . When folded, the bikes can be more easily carried into buildings, on public transportation (facilitating mixed-mode commuting and bicycle commuting), and more easily stored in compact living quarters or aboard a car, boat or plane. Foldable bikes are also often used as a travel bicycle (not to be confused touring bicycle) as an alternative to take-apart bikes. Some folding bicycles are also electrically empowered. A folding bicycle or electric-assisted folding bicycle is legally defined as a bicycle (or Electric bicycle, electric bicycle, e-bikes, respectively) inall nations, having to comply with all relevant Electric bicycle laws, safety standards to be road worthy. Folding mechanisms vary, with each offering a distinct combination of folding speed, folding ease, compactness, ride, weight, durability, complexity and price. Distinguished by the com ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Coventry Transport Museum
Coventry Transport Museum (formerly known as the Museum of British Road Transport) is a transport museum, located in Coventry city centre, England. It houses the largest collection of British-made road transport held in public ownership. It is located in Coventry because the city was previously the centre of the British car industry. There are more than 240 cars and commercial vehicles, 100 motorcycles, 200 bicycles. The ever-changing temporary exhibitions feature motor cars, commercial vehicles, cycles and motorcycles from the museums own collection and beyond. The museum offers activities ranging from engineering challenges to scientific experiments. The museum is also home to a 60 year old Vintage Sleigh Ride, that has been popular in the city for generations of local residents. It has a full-time archive department, which deals with an array of historical items, and offers a public enquiry service answering questions and finding items and information. Visitors need to con ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Belt-driven Bicycle
A belt-driven bicycle is a Chainless bicycle, chainless bicycle that uses a flexible belt (mechanical), belt, typically a synchronous toothed belt, toothed design, in order to Transmission (mechanics), transmit power from the pedals to the wheel. The application of belt drives to bicycles is growing, especially in the commuter bicycle market, due to the low maintenance and lubrication-free benefits. Belt drives are also available for stationary and fitness bicycles. Benefits * Belts do not rust. * Lubrication is not required. ** Cleanliness due to lack of lubrication. ** Little to no maintenance. * Smoother operation. * Quieter than chain. * Longer life than metal bicycle chains. * Some belt systems are lighter than conventional chain-driven system. Drawbacks * Derailleurs cannot be used, so a hub gear is used if multiple gear ratios are required. * Most belts cannot be taken apart as a chain can, so a frame must be able to accommodate the belt by having an opening in th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gear Case
A gear case, also known as a chain case or chainguard, is an enclosure for the bicycle chain and sprocket assemblages commonly employed by utility bicycles. It serves to protect the cyclist from being soiled or trapped in the chain rings and tends to fully enclose the drive train. It may also contain an oil bath to keep the chain lubricated. Modern examples are usually moulded in plastic Plastics are a wide range of synthetic polymers, synthetic or Semisynthesis, semisynthetic materials composed primarily of Polymer, polymers. Their defining characteristic, Plasticity (physics), plasticity, allows them to be Injection moulding .... Similar devices may be found in connection with chains used on larger vehicles and machinery. Gallery See also * Luggage carrier References bicycle glossary entry for "Chain case"from Sheldon Brown's website Sheldon Brown's bicycle glossary entry for "Gear case" Bicycle parts {{cycling-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gear Hub
A hub gear, internal-gear hub, internally geared hub or just gear hub is a gear ratio changing system commonly used on bicycles that is implemented with planetary or epicyclic gears. The gears and lubricants are sealed within the shell of the hub gear, in contrast with derailleur gears where the gears and mechanism are exposed to the elements. Changing the gear ratio was traditionally accomplished by a shift lever connected to the hub with a Bowden cable, and twist-grip style shifters have become common. Hub gear systems generally have a long and largely maintenance-free life though some are not suitable for high-stress use in competitions or hilly, off-road conditions. Many commuter or urban cycles such as European city bikes are now commonly fitted with 7-speed gear-hubs and 8-speed systems are becoming increasingly available. Older or less costly utility bicycles often use 3-speed gear-hubs, such as in bicycle sharing systems. Many folding bicycles use 3-speed gear-hubs. M ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Biomega (bicycle Company)
Biomega is a Copenhagen-based, Denmark, Danish brand of Cycle chic, designer bicycles. It was immediately known for engaging with international designers from outside the bicycle industry; including Marc Newson, Ross Lovegrove, Karim Rashid and Bjarke Ingels, often giving its products unconventional solutions. In addition to producing bikes under its own name, Biomega produced bicycles under a joint sub-brand "Urban Mobility" with Puma AG. Biomega bicycles were represented in the design collections of both Die Neue Sammlung, Centre national des arts plastiques, CNAP, Design Museum Denmark, Museum of Modern Art, MoMA, San Francisco Museum of Modern Art, SFMOMA and the Sir Terrence Conran Foundation Collection. History Biomega was established in 1998 by former university classmates Jens Martin Skibsted and Elias Grove Nielsen.[4] Marc Newson's bicycle design MN in superplastic formed aluminium and Jens Martin Skibsted's shaft drive bikCPHlaunched in 2000. The first generation of the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Humber Limited
Humber Limited was a British manufacturer of bicycles, motorcycles, and cars, incorporated and listed on the stock exchange in 1887. It took the name "Humber & Co Limited" because of the high reputation of the products of one of the constituent businesses that had belonged to Thomas Humber. A financial reconstruction in 1899 transferred its business to Humber Limited. From an interest in motor vehicles beginning in 1896, the motor division became much more important than the cycle division and the cycle trade marks were sold to Raleigh in 1932. The motorcycles were withdrawn from sale during the depression of the 1930s. Humber is now a dormant marque for automobiles as well as cycles. Following their involvement in Humber through Hillman in 1928 the Rootes brothers acquired 60 per cent of Humber's ordinary capital, sufficient for a controlling interest. The two Rootes brothers joined the Humber board in 1932 and began to make Humber the holding company for vehicle manufacturin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Quadrant Shaft Driven Bicycle
Quadrant may refer to: Companies * Quadrant Cycle Company, 1899 manufacturers in Britain of the Quadrant motorcar * Quadrant (motorcycles), one of the earliest British motorcycle manufacturers, established in Birmingham in 1901 * Quadrant Private Equity, an Australian investment firm * Quadrant Records, an independent record label * Quadrant Televentures Ltd., a subsidiary of Videocon Telecom, India Geography * A quadrant or section in a city street nomenclature system, see Address (geography)#Quadrants * Quadrants of Washington, D.C. Mathematics * Quadrant (circle), a circular sector equal to one-quarter of a circle * Quadrant (plane geometry), a sector of a two-dimensional Cartesian coordinate system * Quadrant (solid geometry) Military * , a Second World War British/Australian warship * First Quebec Conference, 1943 (codenamed "QUADRANT") * The quadrant sight, an M203 grenade launcher assembly attachment that gets inserted on the left side of the carrying handle on M16 ri ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chainless Drivetrain Fragment Of A 1880 Litography
The Chainless was a French automobile manufactured from 1900 to 1903 in Paris by SA des Voitures Légère Chainless. The cars used Abeille or Buchet engines of 10, 16, and 20 cv, were shaft-driven voiturette A voiturette is a miniature automobile. History ''Voiturette'' was first registered by Léon Bollée in 1895 to name his new motor tricycle. The term became so popular in the early years of the motor industry that it was used by many makers ...s. References *David Burgess Wise, ''The New Illustrated Encyclopedia of Automobiles''. Defunct motor vehicle manufacturers of France {{Veteran-auto-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
