|
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] |
Strida Grocery Jeh
Strida is a portable belt-driven folding bicycle with a distinctive A-shaped collapsible frame, designed by British engineer and designer Mark Sanders. The first model, Strida 1, was released in 1987 and the latest, Strida 5.2, in 2009. The mass is around 10.5 kg depending on model. Advantages The Strida folds into a "wheeled walking-stick" that can be pushed along, much like a folded pram/baby-buggy whose folding concept provided the inspiration for the design. Other notable characteristics include: * a greaseless kevlar belt that replaces the traditional chain drive to avoid mess (see belt-driven bicycle) * minimalist design (single speed, aluminium-triangle frame, etc.) * low-maintenance brakes (drum brakes on the Strida 1, 2 and 3; disc brakes on the Strida 5 and later versions) * ETRTO 305 mm (16") wheels, upgradable to 355 mm (18") wheels. Disadvantages The single sided wheel mountings and belt drive make fitting gears (e.g. dérailleur or hub gears) ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bicycle Gearing
Bicycle gearing is the aspect of a Bicycle drivetrain systems, bicycle drivetrain that determines the relation between the cadence (cycling), cadence, the rate at which the rider pedals, and the rate at which the drive Bicycle wheel, wheel turns. On some bicycles there is only one gear and, therefore, the gear ratio is Single-speed bicycle, fixed, but most modern bicycles have multiple gears and thus multiple gear ratios. A Shifter (bicycle part), shifting mechanism allows selection of the appropriate gear ratio for efficiency or comfort under the prevailing circumstances: for example, it may be comfortable to use a high gear when cycling downhill, a medium gear when cycling on a flat road, and a low gear when cycling uphill. Different gear ratios and gear ranges are appropriate for different people and styles of cycling. A cyclist's legs produce power optimally within a narrow pedalling speed range, or cadence. Gearing can be optimized to use this narrow range as efficiently ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bike Friday
Bike Friday is a manufacturer of folding, small-wheeled bicycles that is headquartered in Eugene, Oregon, United States. The company was founded in 1992 by brothers Alan Scholz and Hanz Scholz. By 2018, it employed 22 people and manufactured frames in Eugene. Alan Scholz also founded Burley Design Cooperative in 1978. Bike Friday was the only manufacturer of folding bicycles in the United States by 2018, and many of the bikes they made were custom. Some of the models produced include tandems, one that can fold into a backpack, commuter bicycles, belt-drive bicycles, cargo bicycles, a mountain bike A mountain bike (MTB) or mountain bicycle is a bicycle designed for off-road cycling (''mountain biking''). Mountain bikes share some similarities with other bicycles, but incorporate features designed to enhance durability and performance in r ..., recumbents, and even a folding, recumbent, tandem. References Companies based in Eugene, Oregon Vehicle manufacturing co ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Strida
Strida is a portable bicycle, portable Belt-driven bicycle, belt-driven folding bicycle with a distinctive A-shaped collapsible frame, designed by British engineer and designer Mark Sanders (designer), Mark Sanders. The first model, Strida 1, was released in 1987 and the latest, Strida 5.2, in 2009. The mass is around 10.5 kg depending on model. Advantages The Strida folds into a "wheeled walking-stick" that can be pushed along, much like a folded baby transport, pram/baby-buggy whose folding concept provided the inspiration for the design. Other notable characteristics include: * a greaseless kevlar belt that replaces the traditional chain drive to avoid mess (see belt-driven bicycle) * minimalist design (Single-speed bicycle, single speed, aluminium-triangle frame, etc.) * low-maintenance brakes (Bicycle brake system#Drum brakes, drum brakes on the Strida 1, 2 and 3; Bicycle brake system#Disc brakes, disc brakes on the Strida 5 and later versions) * European Tyre and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tern (company)
Tern is a privately held company that designs, manufactures, markets, and sells bicycles for everyday use. The company is based in Taipei, Taiwan and has offices in the US, China, Finland, and the UK. The company's primary products include folding bicycles, electric bicycles, and cycling accessories which are currently sold in 65 countries. History Tern was founded by Florence Shen and Joshua Hon, wife and son of David T. Hon, founder of the established Dahon brand of folding bicycles. Initially the company was the subject of litigation between Dahon and the founders, but a settlement was reached in 2013. The Arctic tern was the inspiration for the company name, due to the fact that it travels the longest distance of all migratory animals and is light and small, qualities the company attributes to its bicycles. The company's website favicon is of an origami tern taking flight. Products Tern currently has ten bike lines: GSD, HSD, Quick Haul, NBD, Vektron, Short Haul, BYB, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Bicycle Manufacturing Companies
This page lists notable bicycle brands and manufacturing companies past and present. For bicycle parts, see List of bicycle part manufacturing companies. Many bicycle brands do not manufacture their own product, but rather import and re-brand bikes manufactured by others (e.g., Nishiki), sometimes designing the bike, specifying the equipment, and providing quality control. There are also brands that have, at different times, been manufacturers as well as re-branders: a company with manufacturing capability may market models made by other (overseas) factories, while simultaneously manufacturing bicycles in-house, for example, high-end models. Only brands or manufacturers that are notable as a bicycle brand should be included. If no page exists for the company or brand, then the page to be linked to should be created first or a reference provided as to its notability or the entry will probably be removed. International manufacturers Bicycle manufacturers are in many cases ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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 in cycling are called cyclists, bikers, or bicyclists. They may wear everyday clothing suited to their destination or specialized cycling attire, sometimes carrying an additional set of clothes. Cycling includes not only traditional two-wheeled bicycles but also unicycles, tricycles, quadricycles, and other human-powered transport, human-powered vehicles (HPVs). Some bicycles are equipped with Electric motor, electric motors (e-bikes) or other forms of Motorized bicycle, motor assistance. Cycling can be done individually or with others. Passengers may ride in front,for instance in the box of a cargo bike, sit on a luggage carrier, or use specially designed seats for children or pets. Some bicycles, such as tandem bicycles or multi-rider pa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Portable Bicycle
A portable bicycle is a bicycle that has been designed to be small and light enough for easy carrying. It is usually dismantled to make a convenient bundle and the frame often has a folding action to facilitate this. The design of a portable bicycle involves a trade-off between ease of carrying and ease of riding. History The first popular bicycles were the large penny-farthings. The pioneering inventor, W. H. J. Grout of Stoke Newington, invented a portable version in which the large front wheel could be dismantled into four pieces so that they would fit into a carrying bag. In the 1890s, Captain Gérard of the 87th Regiment of French Infantry was an advocate of bicycles for military use. To enable his troops to operate in rough terrain, he devised a bicycle which could be folded in two and carried on the soldiers' backs; the weight was between 10-12 kg (22-26¼ lbs). The first time the Gérard portable bicycle was used, it "gave complete satisfaction and justified all ex ... [...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] |
Wheelbase
In both road and rail vehicles, the wheelbase is the horizontal distance between the centers of the front and rear wheels. For road vehicles with more than two axles (e.g. some trucks), the wheelbase is the distance between the steering (front) axle and the centerpoint of the driving axle group. In the case of a tri-axle truck, the wheelbase would be the distance between the steering axle and a point midway between the two rear axles. Vehicles The wheelbase of a vehicle equals the distance between its front and rear wheels. At equilibrium, the total torque of the forces acting on a vehicle is zero. Therefore, the wheelbase is related to the force on each pair of tires by the following formula: :F_f = mg :F_r = mg where F_f is the force on the front tires, F_r is the force on the rear tires, L is the wheelbase, d_r is the distance from the center of mass (CM) to the rear wheels, d_f is the distance from the center of mass to the front wheels (d_f + d_r = L), m is the mass ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aerodynamic Drag
In fluid dynamics, drag, sometimes referred to as fluid resistance, is a force acting opposite to the direction of motion of any object moving with respect to a surrounding fluid. This can exist between two fluid layers, two solid surfaces, or between a fluid and a solid surface. Drag forces tend to decrease fluid velocity relative to the solid object in the fluid's path. Unlike other resistive forces, drag force depends on velocity. Drag force is proportional to the relative velocity for low-speed flow and is proportional to the velocity squared for high-speed flow. This distinction between low and high-speed flow is measured by the Reynolds number. Drag is instantaneously related to vorticity dynamics through the Josephson-Anderson relation. Examples Examples of drag include: * Net force, Net Aerodynamic force, aerodynamic or Fluid dynamics, hydrodynamic force: Drag acting opposite to the direction of movement of a solid object such as cars, aircraft, and boat hulls. * Viscou ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rolling Resistance
Rolling resistance, sometimes called rolling friction or rolling drag, is the force resisting the Motion (physics), motion when a body (such as a ball, tire, or wheel) Rolling, rolls on a surface. It is mainly caused by Plasticity (physics), non-elastic effects; that is, not all the energy needed for deformation (or movement) of the wheel, roadbed, etc., is recovered when the pressure is removed. Two forms of this are hysteresis losses (see rolling resistance#Primary cause, below), and permanent plastic deformation, (plastic) deformation of the object or the surface (e.g. soil). Note that the frictional contact mechanics, slippage between the wheel and the surface also results in energy dissipation. Although some researchers have included this term in rolling resistance, some suggest that this dissipation term should be treated separately from rolling resistance because it is due to the applied torque to the wheel and the resultant slip between the wheel and ground, which is called ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
