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Schlumpf Drive
A Schlumpf Drive is a two-speed planetary gear assembly for use on bicycles and unicycles. It is distinct from other bicycle planetary gear assemblies in that it is located behind the chainring rather than in the rear hub. A push-button on each side of the axle allows the rider to switch between high and low ratios. These are operated by the rider's heel. Schlumpf Drives are primarily used as an alternative to multiple chainrings. Four models are currently produced, with differing ratios from pedal revolutions to chainwheel revolutions. *Speed Drive, this allows a 65% increase in the final drive (ratio 1.65). *High Speed Drive, this allows a 150% increase in the final drive (ratio 2.5). *Mountain Drive, this allows a 60% reduction in the final drive (ratio 0.4). *Reha Drive, this also allows a 60% reduction in the final drive (ratio 0.4). However, it is specifically designed for hand-cranked disability vehicles and requires less pressure for shifting. Schlumpf drives are curren ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Schlumpf Speed Drive Bottom Bracket
Schlumpf is a surname. It is also the German word for smurf. (See also the link to the Wiktionary entry and the German version of this page.) Notable people with the surname include: *Dominik Schlumpf (born 1991), Swiss professional ice hockey defenceman *Eveline Widmer-Schlumpf (born 1956), Swiss lawyer, politician, member of the Swiss Federal Council since 2008 *Fabienne Schlumpf (born 1990), Swiss athlete specialising in the 3000 metres steeplechase and marathon running *Fritz Schlumpf (Italy, February, 1906; April 18, 1992), French Industrialist and collector of automobiles *Hans Schlumpf (born 1904; died 1989), industrialist and collector of automobiles *Leon Schlumpf (born 1925), Swiss politician and a former member of the Swiss Federal Council (1979–1987) *Martin Schlumpf (born 1947), Swiss musician *Wolfgang Schlumpf OSB (1831–1904), Swiss-born Benedictine monk and missionary in the United States See also * Schlumpf Collection, the 500 car collection of Fritz and Hans S ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kris Holm
Kris Holm (born July 15, 1973) is a Canadian best known for riding a unicycle in off-road conditions. He has ridden since 1985 and is considered one of the pioneers of off-road unicycling, and is the world's best-known unicyclist. He is the founder of competitive unicycle trials (unicycle obstacle riding) and was the 1999 North American, 2002 World, and 2005 European unicycle trials champion. He also held the unicycle sidehop world record from 1998-2004 (since broken), and performed trials demonstrations with the Norco Factory Trials Team from 1998-2006. Career Holm first received a unicycle for his twelfth birthday, in 1985. Since then he has ridden off-road in many countries, including the summit of the highest mountain in Central America, the summit of the 3rd highest mountain in North America, trade-routes across the Himalayan Kingdom of Bhutan, and on the Great Wall of China. In 2006, he climbed and attempted a unicycle descent of Licancabur, a volcano in Bolivia. In 2010, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Engineering Companies Of Germany
Engineering is the use of scientific principles to design and build machines, structures, and other items, including bridges, tunnels, roads, vehicles, and buildings. The discipline of engineering encompasses a broad range of more specialized fields of engineering, each with a more specific emphasis on particular areas of applied mathematics, applied science, and types of application. See glossary of engineering. The term ''engineering'' is derived from the Latin ''ingenium'', meaning "cleverness" and ''ingeniare'', meaning "to contrive, devise". Definition The American Engineers' Council for Professional Development (ECPD, the predecessor of ABET) has defined "engineering" as: The creative application of scientific principles to design or develop structures, machines, apparatus, or manufacturing processes, or works utilizing them singly or in combination; or to construct or operate the same with full cognizance of their design; or to forecast their behavior under specific ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bicycle Parts
For other cycling related terms (besides parts) see Glossary of cycling. List of bicycle parts by alphabetic order: * Axle: as in the generic definition, a rod that serves to attach a wheel to a bicycle and provides support for bearings on which the wheel rotates. Also sometimes used to describe suspension components, for example a swing arm pivot axle * Bar ends: extensions at the end of straight handlebars to allow for multiple hand positions * Bar plugs or end caps: plugs for the ends of handlebars * Basket: cargo carrier * Bearing: a device that facilitates rotation by reducing friction * Bell: an audible device for warning pedestrians and other cyclists * Belt-drive: alternative to chain-drive * Bicycle brake cable: see Cable * Bottle cage: a holder for a water bottle * Bottom bracket: The bearing system that the pedals (and cranks) rotate around. Contains a spindle to which the crankset is attached and the bearings themselves. There is a bearing surface on the spindle ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cycle Parts Manufacturers
Cycle, cycles, or cyclic may refer to: Anthropology and social sciences * Cyclic history, a theory of history * Cyclical theory, a theory of American political history associated with Arthur Schlesinger, Sr. * Social cycle, various cycles in social sciences ** Business cycle, the downward and upward movement of gross domestic product (GDP) around its ostensible, long-term growth trend Arts, entertainment, and media Films * ''Cycle'' (2008 film), a Malayalam film * ''Cycle'' (2017 film), a Marathi film Literature * ''Cycle'' (magazine), an American motorcycling enthusiast magazine * Literary cycle, a group of stories focused on common figures Music Musical terminology * Cycle (music), a set of musical pieces that belong together **Cyclic form, a technique of construction involving multiple sections or movements **Interval cycle, a collection of pitch classes generated from a sequence of the same interval class **Song cycle, individually complete songs designed to be performe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gearbox Bicycle
A gearbox bicycle is a bicycle that uses a gearbox to convert torque and rotational speed from the power source, usually the rider's legs, to what is desired at the drive wheel. The gearbox is usually incorporated into the frame near the crank, and it may be used in addition to or instead of derailleur gears or a hub gear. Cited advantages include improved shifting performance, protecting the gearing from damage and exposure to dirt and moisture, as with hub gears, plus locating the additional mass between the two wheels and on the frame where it may be suspended, unlike with hub gears. History Patents for built-in systems to change gear ratios appeared as early as 1890. Adler offered a three-speed gearbox bicycle in the 1930s. Several attempts to develop gearbox bicycles during the 2000s for downhill racing, such as the Honda RN-01 G-cross, incorporated complete derailleur gear drive trains in an enclosure. Around the same time Schlumpf Innovations and Hammerschmidt of ... [...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 coll ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Co-branding
Co-branding is a marketing strategy that involves strategic alliance of multiple brand names jointly used on a single product or service. Co-branding is an arrangement that associates a single product or service with more than one brand name, or otherwise associates a product with someone other than the principal producer. The typical co-branding agreement involves two or more companies acting in cooperation to associate any of various logos, color schemes, or brand identifiers to a specific product that is contractually designated for this purpose. The object for this is to combine the strength of two brands, in order to increase the premium consumers are willing to pay, make the product or service more resistant to copying by private label manufacturers, or to combine the different perceived properties associated with these brands with a single product. An early instance of co-branding occurred in 1956 when Renault had Jacques Arpels of jewelers Van Cleef and Arpels turn the ... [...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 bicycle frame, frame with a bicycle saddle, saddle, and has a human-powered vehicle, pedal-driven direct-drive mechanism, direct-drive. A two speed hub is commercially available for faster unicycling. Unicycling is practiced professionally in circuses, by street performance, 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 Mountain bike trials, 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") and the tall ("giraffe") unicycle. During the late ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Planetary Gear
An epicyclic gear train (also known as a planetary gearset) consists of two gears mounted so that the center of one gear revolves around the center of the other. A carrier connects the centers of the two gears and rotates the planet and sun gears mesh so that their pitch circles roll without slip. A point on the pitch circle of the planet gear traces an epicycloid curve. In this simplified case, the sun gear is fixed and the planetary gear(s) roll around the sun gear. An epicyclic gear train can be assembled so the planet gear rolls on the inside of the pitch circle of a fixed, outer gear ring, or ring gear, sometimes called an ''annular gear''. In this case, the curve traced by a point on the pitch circle of the planet is a hypocycloid. The combination of epicycle gear trains with a planet engaging both a sun gear and a ring gear is called a ''planetary gear train''.J. J. Uicker, G. R. Pennock and J. E. Shigley, 2003, ''Theory of Machines and Mechanisms,'' Oxford University Pr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mountain Unicycling
Mountain unicycling is an adventure sport that consists of traversing rough terrain on a unicycle. Mountain unicycling (muni) is undertaken on similar terrain to mountain biking. However, muni requires much more attention to the microfeatures of the short distance in front of the wheel.The Essential Guide to Mountain and Trials Unicycling, Kris Holm, p128, Unicycles' lack of a freewheel means that descents must be controlled all the way, and the typical lack of a gear system (though two-gear hubs are available) prevents the rider from reaching high speeds. Muni usually takes place on specially designed unicycles, which are equipped with strong hubs, large, knobbly tires, high-grip pedals and rugged frames. Some are also equipped with rim or disc brakes, having the lever mounted under the nose of the saddle. The brake primarily helps to compensate the downhill-slope force, while more expert riders also use it to decelerate or stop. Muni riders also need a few additional skill ... [...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 bicycle frame, frame with a bicycle saddle, saddle, and has a human-powered vehicle, pedal-driven direct-drive mechanism, direct-drive. A two speed hub is commercially available for faster unicycling. Unicycling is practiced professionally in circuses, by street performance, 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 Mountain bike trials, 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") and the tall ("giraffe") unicycle. During the late ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
