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Chainless Bicycle
A chainless bicycle is a bicycle that transmits power to the driven wheel through a mechanism other than a metal chain. Examples * Directly driven bicycle (see penny-farthing and unicycle) * Shaft-driven bicycle * Belt-driven bicycle * Hydraulic bicycle (and pneumatic bicycle) * Hybrid vehicle (see series hybrid bicycle) * Some rowed bikes use a cable or a linkage. * Stringbike the pulley-driven Hungarian designed bike See also * Bicycle drivetrain systems * Outline of cycling Cycling, also known as bicycling or biking, is the activity of riding bicycles or other Human-powered transport, human-powered vehicles with Wheel, wheels, for transportation, recreation, exercise, sport, and other purposes. People who engage i ... References * External links Cycle types {{Cycling-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bicycle
A bicycle, also called a pedal cycle, bike, push-bike or cycle, is a human-powered transport, human-powered or motorized bicycle, motor-assisted, bicycle pedal, pedal-driven, single-track vehicle, with two bicycle wheel, wheels attached to a bicycle frame, frame, one behind the other. A is called a cyclist, or bicyclist. Bicycles were introduced in the 19th century in Europe. By the early 21st century there were more than 1 billion bicycles. There are many more bicycles than cars. Bicycles are the principal Mode of transport, means of transport in many regions. They also provide a popular form of recreation, and have been adapted for use as Toy, children's toys. Bicycles are used for Physical fitness, fitness, Military bicycle, military and Police bicycle, police applications, Bicycle messenger, courier services, Cycle sport, bicycle racing, and artistic cycling. The basic shape and configuration of a typical Safety bicycle, upright or "safety" bicycle, has changed lit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Drive Wheel
A drive wheel is a wheel of a motor vehicle that transmits force, transforming torque into tractive force from the tires to the road, causing the vehicle to move. The powertrain delivers enough torque to the wheel to overcome stationary forces, resulting in the vehicle moving forwards or backwards. A two-wheel drive vehicle has two driven wheels, typically both at the front or back, while a four-wheel drive has four. A steering wheel is a wheel that turns to change the direction of a vehicle. A trailer wheel is one that is neither a drive wheel, nor a steer wheel. Front-wheel drive vehicles typically have the rear wheels as trailer wheels. Drive wheel configurations Front-wheel drive Front-wheel drive (FWD) vehicles' engines drive the front wheels. Using the front wheels for delivery of power as well as steering allows the driving force to act in the same direction as the wheel is pointing. This layout is commonly used in modern passenger cars. A rare example of front ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bicycle Chain
A bicycle chain is a roller chain that transfers power (physics), power from the Bicycle pedal, pedals to the Drive wheel, drive-Bicycle wheel, wheel of a bicycle, thus propelling it. Most bicycle chains are made from carbon steel, plain carbon or alloy steel, but some are nickel electroplating, nickel-plated to prevent rust, or simply for aesthetics. History Obsolete chain designs previously used on bicycles included the bar-link chain, block chain, the skip-link chain, and the Simpson lever chain. The first chains were of a simple, bushing-less design. These had inherent reliability problems and a bit more friction (and mechanical efficiency losses) than modern chains. With these limitations in mind, the Nevoigt brothers, of the German Diamant (German bicycle company), Diamant Bicycle Company, designed the roller chain in 1898, which uses bushings. More recently, the "bushingless roller chain" design has superseded the bushed chain. This design incorporates the bearing surfac ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Penny-farthing
The penny-farthing, also known as a high wheel, high wheeler or ordinary, is an early type of bicycle. It was popular in the 1870s and 1880s, with its large front wheel providing high speeds, owing to it travelling a large distance for every rotation of the wheel. These bicycles had solid Natural rubber, rubber tires and as a consequence the only Shock absorber, shock absorption was in the saddle. The penny-farthing became obsolete in the late 1880s with the development of modern bicycles, which provided similar speed, via a chain drive, chain-driven gear train, and comfort, from the use of pneumatic tires. These later bikes were marketed as "safety bicycles" because of the greater ease of mounting and dismounting, the reduced danger of falling, and the reduced height to fall, in comparison to penny-farthings. The name came from the British penny (British pre-decimal coin), penny and farthing (British coin), farthing coins, the penny being much larger than the farthing, so that ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Unicycle
A unicycle is a vehicle that touches the ground with only one wheel. The most common variation has a frame with a saddle, and has a pedal-driven direct-drive. A two speed hub is commercially available for faster unicycling. Unicycling is practiced professionally in circuses, by street performers, in festivals, and as a hobby. Unicycles have also been used to create new sports such as unicycle hockey. In recent years, unicycles have also been used in mountain unicycling, an activity similar to mountain biking or trials. History US patents for single-wheeled 'velocipedes' were published in 1869 by Frederick Myers and in 1881 by Battista Scuri. Unicycle design has developed since the Penny Farthing and later the advent of the first unicycle into many variations including: the seatless unicycle (" ultimate wheel") the tall ("giraffe") unicycle and "2-wheelers" or "3-wheelers" (multiple wheels stacked directly on top of each other). During the late 1980s some extreme spo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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] |
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] |
Hydraulic Bicycle
A hydraulic bicycle is a chainless bicycle that transfers power to the pedals by means of a liquid passing through tubes from hydraulic pump to hydraulic motor and back. Advantages Advantages include: * Shifting, through valves and displacement, provides either continuously variable gearing or more steps than traditional bicycles. * Shifts smoothly under full power. * Drive transmits power while pedaling forward and backward. Thus racers can power bicycle through turns by alternating short forward and backward pedal strokes. No slack or backlash occurs, in either direction. Ability to coast is maintained. * Mechanism is clean and operates silently. * Fewer moving parts (about 10 vs over 70), all of which are continuously bathed in clean lubricating fluid. * Sealed systems require less maintenance than open chain system. * Front-wheel drive and two-wheel drive systems can be implemented. (See two-wheel drive) * Drive can double as a hydraulic brake, eliminating the weight, cost, a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hybrid Vehicle
A hybrid vehicle is one that uses two or more distinct types of power, such as submarines that use diesel when surfaced and batteries when submerged. Other means to store energy include pressurized fluid in hydraulic hybrids. Hybrid powertrains are designed to switch from one power source to another to maximize both fuel efficiency and energy efficiency. In hybrid electric vehicles, for instance, the electric motor is more efficient at producing torque, or turning power, while the combustion engine is better for maintaining high speed. Improved efficiency, lower emissions, and reduced running costs relative to non-hybrid vehicles are three primary benefits of hybridization. Vehicle types Two-wheeled and cycle-type vehicles Mopeds, electric bicycles, and even electric kick scooters are a simple form of a hybrid, powered by an internal combustion engine or electric motor and the rider's muscles. Early prototype motorcycles in the late 19th century used the same principle ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rowed Vehicles
A rowing cycle is a wheeled vehicle propelled by a rowing motion of the body. Steering, braking, and shifting are usually done by the handlebars. Feet are on symmetrical foot rests, as opposed to rotating pedals. Unlike many rowing boats, the rider faces forward. Rowing cycles exist in numerous designs, particularly with respect to frames and drive mechanisms. Commercial production numbers for rowing cycles are small compared to that of standard bicycles. History The use of a rowing-like action to propel a land vehicle goes probably to the 1870s, as George W. Lee used a sliding-seat in a tricycle. Roadsculler races were held in Madison Square Garden in the 1880s. A toy catalog from FAO Schwarz in 1911 advertised a four-wheeled "Row-Cycle" for children, operated using two levers in a standing position and with steering done by the feet. In the 1920s, Manfred Curry in Germany designed and constructed the Landskiff ("land boat"), a four-wheeled vehicle that would be known as a Row ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stringbike
A string-driven bicycle or stringbike is a bicycle that uses an external chainless rope and pulley drive system instead of a traditional bicycle chain and sprockets. The mechanism was commercialized by Hungarian Stringbike Kft which presented models in 2010 with a 19-speed system with no duplicate gears and having a 350% gear range. Design The mechanism has a rocker arm on each side of the bike that replaces the round sprockets (which are usually only on the right side) on chain driven bikes. In contrast to traditional derailleur chain drives, the drive does not slip when changing gears, and the gearing can be changed even when the bicycle is almost stationary. (similarly to a hub gear), but also "at full throttle." Two Dyneema ropes (ultra-high-molecular-weight polyethylene, UHMWPE) attached to pulleys attached to swinging lever and cam mechanisms have been used, one on each side of the bike. History In the 1990s, string-driven bicycles were developed by Mihály Lantos and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
