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Bicycle chains Roller chain and sprocket. A bicycle chain is a roller chain that transfers power from the pedals to the drive-wheel of a bicycle, thus propelling it.Most bicycle chains are made from plain carbon or alloy steel, but some are nickel-plated to prevent rust, or simply for aesthetics.
Electronic Gear-Shifting System: not simply a type of shifter or a type of derailleur, a complete system with switches instead of levers, wires instead of Bowden cables, and motor-driven derailleurs that must all work together; Fairing: a full or partial covering for a bicycle to reduce aerodynamic drag or to protect the rider from the elements
A motorized bicycle is a bicycle with an attached motor or engine and transmission used either to power the vehicle unassisted, or to assist with pedalling. Since it sometimes retains both pedals and a discrete connected drive for rider-powered propulsion, the motorized bicycle is in technical terms a true bicycle, albeit a power-assisted one.
In 1948, Whizzer sold its first pre-assembled motorized bicycle, the "Pacemaker", for US$199.50 (equivalent to $2,500 in 2023). [ 1 ] The "Sportsman" – featuring 138cc, 3 hp engine, 20" wheels, kick starter and drum brakes – was released in 1949 for US$224.50 (equivalent to $2,900 in 2023), and US$239.50 (equivalent to $3,100 in 2023) for ...
It used a 2-cycle 80cc Fuji engine with four speed manual transmission. It featured a 17-inch front wheel and 16-inch rear wheel. L – Rupp manufactured two L-series dirt bikes in 1973, the L80 and L100. Both bikes used 2-cycle Fuji engines, in 80 and 100cc sizes. They were equipped with four- and five-speed manual transmissions, respectively.
Many riders also fit aftermarket chain-oilers to feed a regular supply of oil to the chain at the rear sprocket. [8] These chain oilers vary in sophistication, but all add significantly to the life of the chain. The custom of lubing by immersing the chain in a tin of hot grease ceased in the early 1970s, once most chains had rubber "O'-rings.
A chain drive and rear derailleur gear change, the most popular system in use today A shaft-drive with crankset and rear gear hub. 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.
Chain drive was the main feature which differentiated the safety bicycle introduced in 1885, with its two equal-sized wheels, from the direct-drive penny-farthing or "high wheeler" type of bicycle. The popularity of the chain-driven safety bicycle brought about the demise of the penny-farthing, and is still a basic feature of bicycle design today.
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