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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] [Amazon] |
Fork End
A fork end, fork-end, or forkend is a slot in a bicycle frame or bicycle fork where the axle of a bicycle wheel is attached. A dropout is a type of fork end that allows the rear wheel to be removed without first derailing the chain. Track bicycle frames have track fork ends, on which the opening faces rearwards. Because they do not have dropouts, the chain must be derailed from the sprocket before the rear wheel can be removed from a typical track bike. Some single-speed bicycles intended for street or trail use are also equipped with track fork ends instead of dropouts. On bicycles that do not have a derailleur or other chain tensioning device, rear ''horizontal dropouts'' allow adjustment of chain tension, and can accommodate a range of chain lengths or cog sizes. They were standard on most older derailleur bicycles from before the 1990s. An older derailleur-equipped bicycle with horizontal dropouts can be readily converted into singlespeed, fixed gear or to use an internally ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Imperial College
Imperial College London, also known as Imperial, is a public research university in London, England. Its history began with Prince Albert, husband of Queen Victoria, who envisioned a cultural district in South Kensington that included museums, colleges, and the Royal Albert Hall. In 1907, these colleges – the Royal College of Science, the Royal School of Mines, and the City and Guilds of London Institute – merged to form the Imperial College of Science and Technology. In 1988, Imperial merged with St Mary's Hospital Medical School and then with Charing Cross and Westminster Medical School to form the Imperial College School of Medicine. The Imperial Business School was established in 2003 and officially opened by Queen Elizabeth II. Formerly a constituent college of the University of London, Imperial became an independent university in 2007. Imperial is organised into four faculties: Engineering, Medicine, Natural Sciences, and Business. The university fosters ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Mark Sanders (designer)
Mark Andrew Sanders is a British designer and engineer. He is the designer of the Strida triangular folding bicycle, as well as the No-Spill Chopping Board, held in the permanent collection of the Museum of Modern Art. Biography Sanders graduated from the Industrial design engineering, Industrial Design Engineering (IDE) course at the Royal College of Art, Royal College of Art/Imperial College."ifworlddesignguide.com" ''https://ifworlddesignguide.com'', Retrieved 3 June 2020 During his time at RCA, Sanders designed the Strida folding bicycle. The Strida, noted for its simplicity, is featured in the book ''Fifty Bicycles that Changed the World'' by Alex Newson. Sanders is the principal of MAS Design, a product design and engineering consultancy established in 1984. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Small-wheel Bicycle
A small-wheel bicycle, sometimes called a mini velo or mini-velo, is an adult bicycle with a reasonable sized frame and relatively small wheels, usually of ETRTO 406 mm (20") or less nominal diameter, which is smaller than the common 622 mm (700c) road bicycle wheel size or 622 mm, 584 mm or 559 mm (29, 27.5 or 26") gravel and mountain bike wheel sizes common on most full-sized adult bikes. They can be folding or non-folding. While many folding bicycles are small-wheel bicycles, not all small-wheel bicycles can fold. Some small-wheel bicycles neither fold nor separate, such as the Moulton, which comes in both fixed-frame and separable-frame versions. While BMX bikes also have ETRTO 406 mm ("20 inch") wheels, they are not normally categorised as "small-wheel bikes". History An early proponent of small-wheeled adult bicycles was Paul de Vivie, better known by his pen name "Vélocio". His approach was to use a balloon-width tire of about 57 mm ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
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] [Amazon] |
Chainring
The crankset (in the US) or chainset (in the UK) is the component of a Bicycle drivetrain systems, bicycle drivetrain that converts the reciprocating motion of the rider's human leg, legs into rotational motion used to drive the bicycle chain, chain or belt-driven bicycle, belt, which in turn drives the rear bicycle wheel, wheel. It consists of one or more sprockets, also called ''chainrings'' or ''chainwheels'' attached to the ''Crank (mechanism), cranks'', ''arms'', or ''crankarms'' to which the pedals attach. It is connected to the rider by the bicycle pedal, pedals, to the bicycle frame by the bottom bracket, and to the rear sprocket, cassette (bicycle part), cassette or cogset, freewheel via the chain. Parts Cranks The two ''cranks'', one on each side and usually mounted 180° apart, connect the bottom bracket axle to the pedals. Lengths Bicycle cranks can vary in length to accommodate different sized riders and different types of cycling. Crank length is measu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Harley-Davidson
Harley-Davidson, Inc. (H-D, or simply Harley) is an American motorcycle manufacturer headquartered in Milwaukee, Wisconsin. 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 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 noted for a style of customization that gave rise to the Chopper (moto ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Timing Belt (camshaft)
In a piston engine, either a timing belt (also called a ''cambelt'') or timing chain or set of timing gears is a perishable component used to synchronize the rotation of the crankshaft and the camshaft. This synchronisation ensures that the engine's valves open and close at the correct times in relation to the position of the pistons. Design In most piston engines, the camshaft(s) are mechanically connected to the crankshaft. The crankshaft drives the camshaft (via a timing belt, timing chain or gears), which in turn actuates the intake and exhaust valves. These valves allow the engine to inhale air (or an air/fuel mixture) and exhale the exhaust gasses. The most common devices to transfer the drive are toothed rubber belts, metal timing chains or a set of gears. The teeth of the belt/chain/gears mesh with both the crankshaft and camshaft(s), thereby synchronising their motion. In many older overhead valve engines, the camshaft is located in the block near the crankshaft, th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Bridgestone Picnica
The Bridgestone Picnica (Japanese: Burijisuton Pikunika: ブリヂストン 「ピクニカ」) line of Folding bicycle, collapsible bikes, some models featuring belt-drives, were introduced in the early 1980s and carried in the Bridgestone Cycle USA catalogs from 1985 through 1990. It weighs 29 pounds, and belt-drive models use a tooth-belt drive like auto timing belt (camshaft), timing belts and Harley-Davidson drive belts, along with a novel two-part Crankset#Chainring, chainring that increases belt tension with increasing load. In April 1987, ''Popular Mechanics'' described Bridgestone's Beltrex system as follows: "Unlike the belt-drive motorcycles, which can slide the rear wheel back to keep the belt taut, the Beltrex uses a floating pulley that's cogged to the drive gear. Tension on the pedal cranks drives the floating pulley forward, taking up belt slack and preventing tooth slippage." The Picnica is a folding bicycle, and part of the appeal of the belt drive is cleanliness. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Bridgestone Picnica Belt Bootiebike Drive
is a Japanese multinational manufacturing company founded in 1931 by Shojiro Ishibashi (18891976) in the city of Kurume, Fukuoka, Japan. The name Bridgestone comes from a calque translation and transposition of (), meaning 'stone bridge' in Japanese. It primarily manufactures tires, as well as golf equipment. As of 2021, Bridgestone is the largest manufacturer of tires in the world, followed by Michelin, Goodyear, Continental, and Pirelli. Bridgestone Group has 181 production facilities in 24 countries as of July 2018. History Origins The history of the ''Bridgestone Tire Company, Ltd.'', founded in 1931 by Shojiro Ishibashi in Japan. The first Bridgestone tire was produced on 9 April 1930, by the Japanese "Tabi" Socks Tire Division (actually made jika-tabi). One year later on 1 March 1931, the founder, Shojiro Ishibashi, made the "Tabi" Socks Tire Division independent and established the Bridgestone Tire Co., Ltd. in the city of Kurume, Fukuoka Prefecture. "Bridgestone" ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Drive Belt
A belt is a loop of flexible material used to link two or more rotating shafts mechanically, most often parallel. Belts may be used as a source of motion, to transmit power efficiently or to track relative movement. Belts are looped over pulleys and may have a twist between the pulleys, and the shafts need not be parallel. In a two pulley system, the belt can either drive the pulleys normally in one direction (the same if on parallel shafts), or the belt may be crossed, so that the direction of the driven shaft is reversed (the opposite direction to the driver if on parallel shafts). The belt drive can also be used to change the speed of rotation, either up or down, by using different sized pulleys. As a source of motion, a conveyor belt is one application where the belt is adapted to carry a load continuously between two points. History The mechanical belt drive, using a pulley machine, was first mentioned in the text of the ''Dictionary of Local Expressions'' by the Han Dyna ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
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