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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 over a century ago, but were mostly supplanted by chain-driven bicycles due to the gear ranges possible with sprockets and derailleurs. Recently, 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 and 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 and very expensive bicycle chain, the SLT 99. Sales of this chain generated revenues of €1m in 1991, and approximately €0,5m annually from 1992-1998. 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. This triggered Bernhard Rohloff to develop a new internally geared hub. On 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 fragile 3700 gram 12 speed ... [...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 transfer the energy from linear to vertical power, making it very useful in machines 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 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Folding Bicycle
A folding bicycle is a bicycle designed to fold into a compact form, facilitating transport and storage. 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. Folding mechanisms vary, with each offering a distinct combination of folding speed, folding ease, compactness, ride, weight, durability, and price. Distinguished by the complexities of their folding mechanism, more demanding structural requirements, greater number of parts, and more specialized market appeal, folding bikes may be more expensive than comparable non-folding models. The choice of model, apart from cost considerations, is a matter of resolving the various practical requirements: a quick, easy fold, a compact folded size, or a faster but less compact model. There are also bicycles that provide similar advantages by separating into ... [...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 c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Belt-driven Bicycle
A belt-driven bicycle is a chainless bicycle that uses a toothed synchronous belt to 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 the rear triangle or an elevated chain stay. There is only one option where the belt can be spliced and joined throug ... [...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. Similar devices may be found in connection with chains used on larger vehicles and machinery. Gallery See also * 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 r ... 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. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Biomega (bicycle Company)
Biomega is a Copenhagen-based, Danish brand of designer bicycles. It is known for engaging international designers from outside the bicycle industry—including Marc Newson, Ross Lovegrove and Karim Rashid— in designing its products. In addition to producing bikes under its own name, Falcon produces bicycles under a joined brand with Puma AG. Biomega bicycles are represented in the design collections of both MOMA, 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. Technology Biomega makes both shaft-driven bicycles and bamboo bicycles. References External links Official websiteLink does not work? m short film/advert directed by Mikael Colville-Andersen Mikael Colville-Andersen (born 29 January 1968) is a Canadian-Danish urban designer and urban mobility expert. He was the CEO of Copenhagenize Design Company, which he founded in 2009 in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Humber Cycles
Humber is an English brand of bicycle. Thomas Humber made himself a velocipede in 1868. From that time he built a substantial business in manufacturing tricycles and bicycles while continuously improving their design and construction. His products were so well-made and well-designed they were known as "the aristocrat among bicycles". Though Thomas Humber retired from the cycle business in 1892 and went on to other things his brand name remained a high valued trademark for more than ninety years. __TOC__ History Thomas Humber (1841–1910)Paul Freund, 'Humber, Thomas (1841–1910)', ''Oxford Dictionary of National Biography'', Oxford University Press, May 2012 founded a bicycle manufacturing business at Nottingham which moved about 1878 to Beeston, Nottinghamshire. By 1887, still under his day-to-day management, it was owned by a public listed company, Humber & Co Limited. Thomas Humber improved cycle technology through the independence of his thinking and his practical abili ... [...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, or half a semicircle * 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") Science and technology * Galactic quadrant, one out of four circular sectors in the division of the Milky Way ... [...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 t ...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] |
