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Cardboard Bicycle
A cardboard bicycle is a bicycle composed mostly of cardboard. Only prototypes have been made . Reported benefits include low cost, and construction from recyclable and renewable materials. The low cost is also expected to act as a theft deterrent. Phil Bridge's prototype In 2008, Phil Bridge created a cardboard bicycle as part of a three-year degree course in Product Design at Sheffield Hallam University. It was intended to discourage theft, supports a rider up to , and is constructed from a structural cardboard called Hexacomb. It is waterproof, but is only expected to survive six months of constant use. The drivetrain and brakes are metal, as on a conventional bike, and it rolls on standard pneumatic tires. Izhar Gafni's prototype In 2012, Izhar Gafni, an Israeli mechanical engineer and cycling enthusiast, unveiled a prototype bicycle made almost entirely out of cardboard in his workshop in Moshav Ahituv. The components, including bike’s frame, wheels, handlebars and sad ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cardboard Bicycle
A cardboard bicycle is a bicycle composed mostly of cardboard. Only prototypes have been made . Reported benefits include low cost, and construction from recyclable and renewable materials. The low cost is also expected to act as a theft deterrent. Phil Bridge's prototype In 2008, Phil Bridge created a cardboard bicycle as part of a three-year degree course in Product Design at Sheffield Hallam University. It was intended to discourage theft, supports a rider up to , and is constructed from a structural cardboard called Hexacomb. It is waterproof, but is only expected to survive six months of constant use. The drivetrain and brakes are metal, as on a conventional bike, and it rolls on standard pneumatic tires. Izhar Gafni's prototype In 2012, Izhar Gafni, an Israeli mechanical engineer and cycling enthusiast, unveiled a prototype bicycle made almost entirely out of cardboard in his workshop in Moshav Ahituv. The components, including bike’s frame, wheels, handlebars and sad ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bicycle Drivetrain Systems
Bicycle drivetrain systems are used to transmit power on bicycles, tricycles, quadracycles, unicycles, or other human-powered vehicles from the riders to the drive wheels. Most also include some type of a mechanism to convert speed and torque via gear ratios. History The history of bicycle drivetrain systems is closely linked to the history of the bicycle. Major changes in bicycle form have often been initiated or accompanied by advances in drivetrain systems. Several early drivetrains used straight-cut gears that meshed directly with each other outside of the hub. Some bicycles have used a double-sided rear wheel, with different-sized sprockets on each side. To change gears, the rider would stop and dismount, remove the rear wheel and reinstall it in the reverse direction. Derailleur systems were first developed in the late 19th century, but the modern cable-operated parallelogram derailleur was invented in the 1950s. * Draisine * Penny-farthing * Safety bicycle Power ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Products Introduced In 2012
Product may refer to: Business * Product (business), an item that serves as a solution to a specific consumer problem. * Product (project management), a deliverable or set of deliverables that contribute to a business solution Mathematics * Product (mathematics) Algebra * Direct product Set theory * Cartesian product of sets Group theory * Direct product of groups * Semidirect product * Product of group subsets * Wreath product * Free product * Zappa–Szép product (or knit product), a generalization of the direct and semidirect products Ring theory * Product of rings * Ideal operations, for product of ideals Linear algebra * Scalar multiplication * Matrix multiplication * Inner product, on an inner product space * Exterior product or wedge product * Multiplication of vectors: ** Dot product ** Cross product ** Seven-dimensional cross product ** Triple product, in vector calculus * Tensor product Topology * Product topology Algebraic topology * Cap product * Cup pro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paper Products
Paper is a thin sheet material produced by mechanically or chemically processing cellulose fibres derived from wood, rags, grasses or other vegetable sources in water, draining the water through fine mesh leaving the fibre evenly distributed on the surface, followed by pressing and drying. Although paper was originally made in single sheets by hand, almost all is now made on large machines—some making reels 10 metres wide, running at 2,000 metres per minute and up to 600,000 tonnes a year. It is a versatile material with many uses, including printing, painting, graphics, signage, design, packaging, decorating, writing, and cleaning. It may also be used as filter paper, wallpaper, book endpaper, conservation paper, laminated worktops, toilet tissue, or currency and security paper, or in a number of industrial and construction processes. The papermaking process developed in east Asia, probably China, at least as early as 105 CE, by the Han court eunuch Cai Lun, although the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bicycles
A bicycle, also called a pedal cycle, bike or cycle, is a human-powered or motor-powered assisted, pedal-driven, single-track vehicle, having two wheels attached to a 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, more than 1 billion were in existence. These numbers far exceed the number of cars, both in total and ranked by the number of individual models produced. They are the principal means of transportation in many regions. They also provide a popular form of recreation, and have been adapted for use as children's toys, general fitness, military and police applications, courier services, bicycle racing, and bicycle stunts. The basic shape and configuration of a typical upright or "safety bicycle", has changed little since the first chain-driven model was developed around 1885. However, many details have been improved, especially since the advent of modern ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
World Bicycle Relief
World Bicycle Relief is an international, non-profit organization based in Chicago, IL that specializes in large-scale, comprehensive bicycle distribution programs to aid poverty relief in developing countries around the world. Their programs focus primarily on education, economic development, and health care. As of February 2020, World Bicycle Relief has distributed 500,000 bicycles in 21 countries and trained more than 2,300 bicycle mechanics in the developing world. Within their largest program, the Bicycles For Educational Empowerment program, nearly 70 percent of the student bicycles are designated for girl students. Background Studies done in Africa (Uganda and Tanzania) and Sri Lanka on hundreds of households have shown that a bicycle can increase the income for families by as much as 35%. Transport, if analyzed for the cost-benefit analysis for rural poverty alleviation, has given one of the best returns in this regard. For example, road investments in India were a stagge ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wooden Bicycle
A wooden bicycle is a bicycle constructed either mostly, or entirely from wood. Wood was the material used in the earliest bicycles, and is also used by modern builders, especially in balance bicycles for children. The wood can be either solid or laminate. History The first bicycles recorded, known variously as velocipedes, dandy horses, or hobby horses, were constructed from wood, starting in 1817. Modern Recent technological advances in adhesives and fabrication have made wood a feasible choice in the modern cycle world. Wooden bicycle frames are sometimes aided by steel or composite lugs to connect the wooden tubes or attach components. These frames can be made with plywood, hardwoods, or bamboo. HTech Bikes make Wooden bicycles. See also * Bamboo bicycle * Cardboard bicycle A cardboard bicycle is a bicycle composed mostly of cardboard. Only prototypes have been made . Reported benefits include low cost, and construction from recyclable and renewable materials. Th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Outline Of Cycling
:''This article is an outline about the activity of cycling. For an outline about bicycles themselves, see outline of bicycles.'' :The following ''outline'' is provided as an overview of, as well as a topical guide to cycling: Cycling, also called bicycling or biking, is the activity of using / riding bicycles, (at least partially) human-powered, wheeled vehicles (typically by foot pedalling), for purposes including transport, recreation, social interaction, exercise, sport, therapy, other purposes, or any combination thereof. Persons engaged in cycling are called cyclists, bikers, or sometimes bicyclists. They typically either dress for where they are going, or for the cycling, sometimes having another set of clothing with them, or arranged. Apart from regular two-wheeled bicycles, cycling also includes riding unicycles, tricycles, quadricycles, and other similar human-powered wheeled vehicles (HPVs). Some bicycles are sold with (electric) motors (e-bikes), or oth ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chukudu
The chukudu (or chikudu, cbokoudou, tshukudu) is a two-wheeled handmade vehicle used in the east of the Democratic Republic of Congo. It is made of wood, and is used for transporting cargo. The chukudu generally has an angular frame, two small wheels (often of wood, sometimes wrapped with rubber), handlebars, and a pad for the operator to place their knee on while propelling the vehicle with their leg. On a descent, the rider stands on the deck like a kick scooter. On flat ground, the rider can put one knee on the deck and push the ground by the other foot like a knee scooter. Rubber mud flaps and shock absorber springs may be added. History Chukudus first appeared in the 1970s in North Kivu, during the difficult economic times under Mobutu Sese Seko. In 2008, chikudus were selling for US$100 with a cost of materials of nearly US$60. Similarly, in 2014 they cost $50 to $100 and were used to earn up to $10 per day, in an area where most people live on less than $2 per day. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bikes Not Bombs
Bikes Not Bombs is a Boston, Massachusetts based nonprofit that uses the bicycle as a vehicle for social change by recycling donated bicycles, training young people to fix their own bikes and become employable mechanics and sending thousands of bicycles to international partner communities in countries such as Uganda, Ghana, St. Kitts & Nevis, El Salvador, Sierra Leone, Guatemala, Kenya, and Rwanda. The organization was founded in 1984 by Carl Kurz, a bicycle mechanic and Michael Replogle, a Maryland-based transportation planner. Bikes Not Bombs provided bicycles and bicycle parts to Nicaragua in opposition to the Reagan administration's support for the Contra War, and in solidarity with the Nicaraguan people and in resistance to the U.S. trade embargo against Nicaragua in effect at the time. Mira Brown became involved with BNB's work while in Nicaragua and later became the organization's first Executive Director. Since that time, Bikes Not Bombs hasent over 70,000 bicycles ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bamboo Bicycle
Bamboo bicycles are pedal-and-chain-driven, human-powered, single-track vehicles that have two wheels attached to a bamboo frame. Because of its light weight, vibration damping, and sustainability, bamboo is slowly starting to be used in bicycle frame production, though the industry is still dominated by aluminium frames. History Bamboo bikes were first patented in England by the Bamboo Cycle Company and introduced to the general public on 26 April 1894. A US patent was applied for in 1895, by August Oberg and Andrew Gustafson, and granted in 1896. However, with the development of tougher industrial metals, such as steel and aluminium, large-scale usage of bamboo to build bicycles never happened. Though bicycles are a staple of human transportation, in both rural and urbanised areas, bamboo bicycles are not widely used. However, with the advent of the Green movement, bamboo is being used again, primarily for high-end racing and touring bicycles. Bamboo bikes are entering t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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