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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] |
Shimano Xt Rear Derailleur
, originally and later , is a Japanese multinational corporation, multinational manufacturing company for cycling components, fishing tackles and rowing (sport), rowing equipment, who also produced golf supplies until 2005 and snowboarding gear until 2008. Named after founder Shozaburo Shimano (, 1894–1958) and headquartered in Sakai, Osaka, Sakai, Osaka Prefecture, the company has 32 consolidated and 11 unconsolidated subsidiaries, with the primary manufacturing plants based in Kunshan (China), Malaysia and Singapore. In 2017, Shimano had net sales of US dollar, US $3.2 billion, 38% in Europe, 35% in Asia, and 11% in North America. Bicycle components represented 80%, fishing tackle 19%, and other products 0.1%. The company is publicly traded, with 93 million shares of common stock outstanding. They are also the official neutral support for most of the UCI World Tour. Cycling Shimano sales constitute an estimated 70–80% of the global bicycle component market by value. I ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Groupset
A groupset or gruppo (from the Italian for "group", sometimes misspelled grouppo) is a bicycle component manufacturer's organized collection of mechanical parts. It generally refers to all of the components that make up a bicycle excluding the bicycle frame, fork, stem, wheels, tires, and rider contact points, such as the saddle and handlebars. These parts typically include the following: * 2 gear levers or shifters ''and'' * 2 brake levers ''or'' * 2 integrated brake levers/shifters * 2 brakes, front and rear * 2 derailleurs, front and rear * 1 bottom bracket * 1 crankset * 1 chain * 1 cogset, freewheel or cassette With the following forming part of some groupsets: * 1 headset (more commonly included with vintage groupsets) * 1 seatpost * 2 hubs, front and rear (although, most manufacturers now offer groupset-branded pre-built wheels) * Pair of pedals * assorted cables and cable housing Except for special commemorative versions, manufacturers do not actually package the vari ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Conference Bike
The ConferenceBike is a 7-seat human powered vehicle created by artist Eric Staller and manufactured in The Netherlands. One person steers and all may pedal . The bike has a circular jointed drive-shaft and rack & pinion steering. In most countries, it has the same legal status as a bicycle. There are now over 300 ConferenceBikes in 18 countries. Purpose The ConferenceBike is used primarily for tourism, and used as a team building tool at corporations and university campuses. Google Inc. has nine bikes in use for transportation and team building on their campus. The Washington, D.C. Veterans Health Administration Medical Center has a ConferenceBike that was donated by Eric Staller's father. It is used by employees and veterans for recreational and fundraising events. Specifications *Length: *Width: *Weight: See also * Outline of cycling :''This article is an outline about the activity of cycling. For an outline about bicycles themselves, see outline of bicycles.'' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sociable
The sociable or buddy bike or side by side bicycle is a bicycle that supports two riders who sit next to one another, in contrast to a tandem bicycle, where the riders sit fore and aft. The name "sociable" alludes to the relative ease with which the two cyclists can speak with each other, unlike on the tandem. History ''Bicycling through Time'' by Paul and Charlie Farren has a picture of a sociable with a frame under each rider and two wheels between them from 1897. The Ford Museum in Detroit has a similar sociable on display. More modern single framed sociables may have started with Australian cyclist Hubert Opperman, although in its basic form the design has been around for longer, since the end of the 19th century. It was originally marketed by the Punnett Cycle Company. Historically it has been used as a courting bike; gentlemen would be able to spend time with ladies in an activity that allowed proximity. Present day For several years the Taiwanese "Buddy Bike" sociable w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tandem Bicycle
A tandem bicycle or twin is a form of bicycle (occasionally a tricycle) designed to be ridden by more than one person. The term tandem refers to the seating arrangement (fore to aft, not side by side), not the number of riders. Patents related to tandem bicycles date from the mid 1880s. Tandems can reach higher speeds than the same riders on single bicycles, and tandem bicycle racing exists. As with bicycles for single riders, there are many variations that have been developed over the years. Terminology The term tandem refers to the seating arrangement (fore to aft, not side by side), not the number of riders. A bike with two riders side by side is called a sociable. Tandem bicycles are sometimes called "Daisy Bells". This is in reference to "Daisy Bell (Bicycle Built for Two)" which is a popular song, written in 1892 by British songwriter Harry Dacre, with the well-known chorus, "Daisy, Daisy / Give me your answer, do. / I'm half crazy / all for the love of you", ending wi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Recumbent Bicycle
A recumbent bicycle is a bicycle that places the rider in a laid-back reclining position. Most recumbent riders choose this type of design for ergonomic reasons: the rider's weight is distributed comfortably over a larger area, supported by back and buttocks. On a traditional upright bicycle, the body weight rests entirely on a small portion of the Tuberosity of the ischium, sitting bones, the feet, and the hands. Most recumbent models also have an aerodynamics, aerodynamic advantage; the reclined, legs-forward position of the rider's body presents a smaller frontal profile. A recumbent holds the world speed record for a bicycle, and they were banned from racing under the Union Cycliste Internationale (UCI) in 1934, and now race under the banner of the World Human Powered Vehicle Association (WHPVA) and International Human Powered Vehicle Association (IHPVA). Recumbents are available in a wide range of configurations, including: long to short wheelbase; large, small, or a mix ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rowing Cycles
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] |
Handcycle
A handcycle is a type of human-powered land vehicle powered by the arms rather than the legs, as on a bicycle. Most handcycles are tricycle in form, with two coasting rear wheels and one steerable powered front wheel. Despite usually having three wheels, they are also known as ''handbikes''. Origin Stephan Farffler was a Nuremberg watchmaker of the seventeenth century whose invention of a manumotive carriage in 1655 is widely considered to have been the first self-propelled bicycle. He is believed to have been either a paraplegic or an amputee. The three-wheeled device is believed to have been a precursor to the modern-day tricycle and bicycle. Description Many manufacturers have designed and released hand-powered recumbent trikes, or handcycles. Handcycles are a regular sight at HPV meets and are beginning to be seen on the streets. They commonly follow a delta design with front wheels driven by standard derailleur gearing powered by hand cranks. Brake levers are usually ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rowbike
A rowbike is an example of a rowing cycle, hybrid fitness/transport machine that combines a bicycle, and a rowing machine. "Rowbike" is a trademark of the Rowbike company. The Rowbike was invented by Scott Olson, the creator of Rollerblade inline skates. "Rowling" is a combination of rowing and rolling, and is sometimes used in place of rowing when describing a Rowbike. Unlike traditional bicycles, where power is supplied primarily by the rider's legs turning pedals connected to the drive wheel through a looped chain, a Rowbike delivers power through a swinging lever that moves a chain back and forth over the rear cog in a reciprocating motion regulated by a bungee cord. The rowing lever is large enough that a rider will normally utilize muscles from their legs, arms, back and abdomen to maintain a steady rowing motion to keep the Rowbike in motion. Rowbikes are marketed as providing a full body workout through the rowing motion which is gentle on the rider's knees, hips and b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
ElliptiGO
ElliptiGO, Inc. is a manufacturer of stand-up and elliptical bicycles headquartered in Solana Beach, California. Elliptical bikes combine the motion of an indoor elliptical trainer with the outdoor mobility of a traditional bicycle. History Co-founders Bryan Pate and Brent Teal began working on the idea for ElliptiGO out of their garage in Solana Beach in 2005. A patent for an elliptical bicycle was first registered in 2008. In 2010, ElliptiGO subsequently secured the exclusive rights to the patents. An elliptical bicycle is a device that uses a running-like elliptical motion to propel a bicycle. The first elliptical bike prototype, codenamed "Alfa", was completed by mid-2006. In 2010, the ElliptiGO 8S, the company's first commercially available elliptical bike, was brought to the market. Initially, the company raised nearly $800,000 from investors, family, and friends, followed by another $500,000 raised for production. Health benefits In 2015, the American Council on Exe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Los Angeles Times
The ''Los Angeles Times'' (abbreviated as ''LA Times'') is a daily newspaper that started publishing in Los Angeles in 1881. Based in the LA-adjacent suburb of El Segundo since 2018, it is the sixth-largest newspaper by circulation in the United States. The publication has won more than 40 Pulitzer Prizes. It is owned by Patrick Soon-Shiong and published by the Times Mirror Company. The newspaper’s coverage emphasizes California and especially Southern California stories. In the 19th century, the paper developed a reputation for civic boosterism and opposition to labor unions, the latter of which led to the bombing of its headquarters in 1910. The paper's profile grew substantially in the 1960s under publisher Otis Chandler, who adopted a more national focus. In recent decades the paper's readership has declined, and it has been beset by a series of ownership changes, staff reductions, and other controversies. In January 2018, the paper's staff voted to unionize and final ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Elliptical Trainer
An elliptical trainer or cross-trainer is a stationary exercise machine used to stair climb, walk, or run without causing excessive pressure to the joints, hence decreasing the risk of impact injuries. For this reason, people with some injuries can use an elliptical to stay fit, as the low impact affects them little. Elliptical trainers offer a non-impact cardiovascular workout that can vary from light to high intensity based on the speed of the exercise and the resistance preference set by the user. Elliptical trainers first entered the market in the 1990s, invented by Precor. Most elliptical trainers work the user's upper and lower body (although some models do not have moving upper body components). Though elliptical trainers are considered to be minimal-impact, they are an example of a weight-bearing form of exercise. They can be self-powered by user-generated motion or need to be plugged in for adjustment of motion and/or for supplying their electronic consoles and resis ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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