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The most effective and secure bike racks are those that can secure both wheels and the frame of the bicycle, using a bicycle lock. Bike racks can be constructed from a number of materials, including stainless steel, steel, recycled plastic, and thermoplastic. Durability, weather resistance, appearance and functionality are important factors ...
Portage strap: a strap (usually made of leather) attached to the inside of the bike frame, designed to make carrying the bike over one's shoulder easier; Pulley wheel: see Jockey wheel; Power meter: a device on a bicycle that measures the power output of the rider; Quick release: a skewer with a lever on one end that loosens when the lever is ...
The ambiguous term bicycle rack or bike rack may refer to: Bicycle carrier , a device attached to a vehicle (e.g., to a car or bus) to which bicycles can be mounted for transport Bicycle parking rack , a stationary fixture to which a bicycle can be securely attached (typically using a bicycle lock) to prevent theft
English: A simple diagram of a road bicycle drivetrain, derailleurs, right crank, and outline of the frame. I've traced a photo of my road bike, with a mostly Shimano parts: a 600 rear derailleur, 8 speed cassette, 105 octalink double crank, and 105 front derailleur.
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.
Early on, the company's main product was its mountain bikes, and QBP also specialised in importing hard-to-find mountain-bike parts from suppliers in Japan. [6] In 1984, QBP hired its first employee and sold $1 million in parts. [6] In 1996 QBP purchased a 67,000-square-foot (6,200 m 2) warehouse on its current site in West Bloomington. [7]
A rack and pinion has roughly the same purpose as a worm gear with a rack replacing the gear, in that both convert torque to linear force. However the rack and pinion generally provides higher linear speed — since a full turn of the pinion displaces the rack by an amount equal to the pinion's pitch circle whereas a full rotation of the worm screw only displaces the rack by one tooth width.
The mechanism was invented in 1927 by Tullio Campagnolo, an Italian bicycle racer. He was frustrated when he attempted to change gears during a race. At the time there was but one cog on each side of the rear hub, so gear changes necessitated stopping, removing the rear wheel, flipping it over horizontally so that the opposite cog is engaged by the chain, and finally reinstalling the wheel.