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Fixed Wheel
A fixed-gear bicycle (or fixed-wheel bicycle, commonly known in some places as a fixie) is a bicycle that has a drivetrain with no freewheel mechanism. The freewheel was developed early in the history of bicycle design but the fixed-gear bicycle remained the standard track racing design. More recently the "fixie" has become a popular alternative among mainly urban cyclists, offering the advantage of simplicity compared with the standard multi-geared bicycle. Most bicycle hubs incorporate a freewheel to allow the pedals to remain stationary while the bicycle is in motion, so that the rider can coast, i.e., ride without pedalling using forward momentum. A fixed-gear drivetrain has the drive sprocket (or cog) threaded or bolted directly to the hub of the back wheel, so that the pedals are directly coupled to the wheel. During acceleration, the pedal crank drives the wheel, but in other situations, the rear wheel can drive the pedal cranks. This direct coupling allows a cyclist to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Moyer Cycles I
Moyer is a surname. Notable people with the surname include: * Alex Moyer (born 1963), American football linebacker * Alice Curtice Moyer (1866–1937), American writer and suffragist * Allen Moyer (born 1958), American set designer * Andrew J. Moyer (1899–1959), American microbiologist * Brett Moyer (born 1984), American lacrosse player * Brian C. Moyer, Director of the U.S. Bureau of Economic Analysis (from 2014) * Buck Moyer (''Virgil A. Moyer Jr.'', 1920–2015), American Lutheran pastor * Carrie Moyer (born 1960), American painter and writer * Charles Moyer (1866–1929), president of the Western Federation of Miners * David Moyer, American Anglican bishop * Denny Moyer (1939–2010), American boxer * Donald R. Moyer (1930–1951), United States Army soldier, posthumous Medal of Honor recipient * Diane Moyer (born 1958), American field hockey player * Ed Moyer (1885–1962), American baseball player * Ellen Moyer (born 1936), American politician, mayor of Annapolis, Maryland ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Derailleur Gears
Shimano 600 front derailleur (1980) A derailleur is a variable-ratio bicycle gearing system consisting of a chain, multiple sprockets of different sizes, and a mechanism to move the chain from one sprocket to another. Modern front and rear derailleurs typically consist of a moveable chain-guide that is operated remotely by a Bowden cable attached to a shifter mounted on the down tube, handlebar stem, or handlebar. When a rider operates the lever while pedalling, the change in cable tension moves the chain-guide from side to side, "derailing" the chain onto different sprockets. Etymology ''Dérailleur'' is a French word, derived from the derailment of a train from its tracks. Its first recorded use was 1930. History A modern road bicycle drivetrain with front and rear derailleurs Various derailleur systems were designed and built in the late 19th century. One example is the Protean two-speed derailleur available on the Whippet safety bicycle. The French bicycle to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Deceleration
In mechanics, acceleration is the rate of change of the velocity of an object with respect to time. Accelerations are vector quantities (in that they have magnitude and direction). The orientation of an object's acceleration is given by the orientation of the ''net'' force acting on that object. The magnitude of an object's acceleration, as described by Newton's Second Law, is the combined effect of two causes: * the net balance of all external forces acting onto that object — magnitude is directly proportional to this net resulting force; * that object's mass, depending on the materials out of which it is made — magnitude is inversely proportional to the object's mass. The SI unit for acceleration is metre per second squared (, \mathrm). For example, when a vehicle starts from a standstill (zero velocity, in an inertial frame of reference) and travels in a straight line at increasing speeds, it is accelerating in the direction of travel. If the vehicle turns, an accel ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bicycle Pedal
The pedal is the part of a bicycle that the rider pushes with their foot to propel the vehicle. It provides the connection between the cyclist's foot or shoe and the crank allowing the leg to turn the bottom bracket spindle and propel the bicycle's wheels. A pedal usually consists of a spindle that threads into the end of the crank, and a body on which the foot rest is attached, that is free to rotate on bearings with respect to the spindle. Pedals were initially attached to cranks connecting directly to the driven (usually front) wheel. The safety bicycle, as it is known today, came into being when the pedals were attached to a crank driving a sprocket that transmitted power to the driven wheel by means of a roller chain. Types Just as bicycles come in many varieties, there are different types of pedals to support different types of cycling. Flat and platform Traditionally, platform pedals were pedals with a relatively large flat area for the foot to rest on, in contrast t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Detangler
The detangler, Gyro or rotor is an invention for the freestyle BMX bicycle, allowing the handlebars to turn a complete 360° rotation without the brake cables getting tangled up. A detangler is usually only used for the rear brake cable. The front brake cable can be routed through the stem, via a hollow stem bolt known as a Pott's mod bolt, and fork steer tube to avoid the tangling problem. How it works The single cable from the handlebar's rear brake lever divides into two cables which are routed to opposite sides of the stem or fork steer tube and into cable stops. The inner cables connect to metal tabs on a disc attached to the upper side of a thrust bearing placed around the stem or steer tube. Squeezing the brake lever pulls the inner cables and causes the bearing assembly to rise. A second disc is attached to the bottom of the thrust bearing such that the entire assembly moves together up and down the steering axis while each disc can rotate independently around the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Montreal Mirror
''Montreal Mirror'' or just ''Mirror'' was a free English language alternative newsweekly based in Montreal, Quebec, Canada which was distributed every Thursday. It had a circulation of 70,000 and reached a quarter of a million readers per week. First published on June 20, 1985, the publication became a weekly in September 1989. It was bought by media giant Quebecor in 1997. It was published by ''Communications Gratte-Ciel Ltée''. On June 22, 2012, Sun Media (the division of Quebecor that the Mirror belonged to) announced that the paper would be ceasing publication effective immediately. See also * List of newspapers in Canada * Ken Hechtman References External links ''Montreal Mirror'' (official website)(via the Internet Archive) Company profile- Verified Audit Circulation Verified Audit Circulation was a United States company founded by Geraldine Knight in 1951 that conducts circulation audits of both free and paid print publications and of traffic figures for web sites ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Courier 547
A courier is a person or organisation that delivers a message, package or letter from one place or person to another place or person. Typically, a courier provides their courier service on a commercial contract basis; however, some couriers are government or state agency employees (for example: a diplomatic courier). Duties and functions Couriers are distinguished from ordinary mail services by features such as speed, security, tracking, signature, specialization and individualization of express services, and swift delivery times, which are optional for most everyday mail services. As a premium service, couriers are usually more expensive than standard mail services, and their use is normally limited to packages where one or more of these features are considered important enough to warrant the cost. Courier services operate on all scales, from within specific towns or cities, to regional, national and global services. Large courier companies include DHL, DTDC, FedEx, EMS Intern ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kinetic Friction
Friction is the force resisting the relative motion of solid surfaces, fluid layers, and material elements sliding against each other. There are several types of friction: *Dry friction is a force that opposes the relative lateral motion of two solid surfaces in contact. Dry friction is subdivided into ''static friction'' ("stiction") between non-moving surfaces, and ''kinetic friction'' between moving surfaces. With the exception of atomic or molecular friction, dry friction generally arises from the interaction of surface features, known as asperities (see Figure 1). *Fluid friction describes the friction between layers of a viscous fluid that are moving relative to each other. *Lubricated friction is a case of fluid friction where a lubricant fluid separates two solid surfaces. *Skin friction is a component of drag, the force resisting the motion of a fluid across the surface of a body. *Internal friction is the force resisting motion between the elements making up a s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Track Stand
The track stand or standstill is a technique that bicycle riders can use to maintain balance while their bicycle remains stationary or moves only minimal distances. The technique originated in track cycling and is now used by other types of cyclists wishing to stop for a short time without putting a foot on the ground, such as bike commuters at stop signs. To perform a track stand, a cyclist holds the cranks in an approximately horizontal position with the front wheel steered to the left or right, and pedals forward, and back in the case of a fixed-gear bicycle, which the steered front wheel converts into a side-to-side motion. Origin and use The term originated from use of the technique by track cyclists prior to starting, or as a tactic in track sprinting whereby riders will initially ride very slowly and maneuver across the track in an effort to get their rival to take the lead so that they can then draft (or slipstream) behind, conserving energy for the final sprint. O ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Artistic Cycling
Artistic cycling is a form of competitive indoor cycling in which athletes perform tricks (called exercises) for points on specialized, fixed-gear bikes in a format similar to ballet or gymnastics. The exercises are performed in front of judges in five-minute roundsAbout Indoor Cycling Artistic Cycling, UCI, Retrieved 18 April 2021 by singles, pairs, four- or six-person teams. History The first unofficial world championships in artistic cycling was held in 1888 by Swiss-American Nicholas Edward Kaufmann and was largely a publicity stunt to showcase his trick bicycling. The first official world championships were held for men in 1956 and for women in 1970.Bikes The bicycles used for artistic cycling are a form of |
Bike Polo
Cycle polo, bicycle polo, or bike polo (''polo-vélo'' in French; ''Radpolo'' in German) is a team sport, similar to traditional polo, except that bicycles are used instead of horses. There are two versions of the sport: grass and Hardcourt Bike Polo. The hardcourt game saw a sharp spike in interest in the first decade of the 21st century and new teams are sprouting up across the world in China, Canada, Ireland, Switzerland, France, India, Germany, Pakistan, Ukraine, Russia, Malaysia, Sri Lanka, Indonesia, Hungary, Australia, New Zealand, Sweden, England, Scotland, Argentina, Italy, Spain, USA, Poland, Croatia, Slovenia, Lithuania, Nepal, Brazil and Cuba. The grass game There are two versions of the grass games: the four-player game and the five-player game. In the four-player game, cycle polo is played in a rectangular grass field, officially, unofficially whatever field is big enough. Moreover, official dimensions can vary between in length on in width. The ball used app ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cycle Ball
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 perfor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
