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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 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.
A gear case, also known as a chain case or chainguard, is an enclosure for the bicycle chain and sprocket assemblages commonly employed by utility bicycles. It serves to protect the cyclist from being soiled or trapped in the chain rings and tends to fully enclose the drive train. It may also contain an oil bath to keep the chain lubricated.
Brad Binder (born 11 August 1995) is a South African Grand Prix motorcycle racer.He is most-known for winning the 2016 Moto3 World Championship.In November 2019 he was confirmed as Red Bull KTM Factory Racing rider in MotoGP class for the 2020 season, [1] replacing Johann Zarco who had abandoned his factory ride earlier during that year.
A true messenger bag includes a second, thinner, stabilising strap that is fastened either around the rider's waist or diagonally across the chest. Without a stabilising strap, the bag tends to swing around to the rider's front, making pedalling difficult. Messenger bags are often used as a fashion accessory.
In the case of an expander nut, the bottom of the stem is cut perpendicular to its length and also has two slits cut parallel to its length. The cone-shaped expander nut is pulled upwards by the bolt causing the sides of the stem to spread and press against the inside of the steerer tube to hold it in place.
The front wheel from a racing bicycle. Bicycle wheel with wooden rim Nipples Spokes Cross-section of a rim A Shimano Dura-Ace freehub-style hub. A bicycle wheel is a wheel, most commonly a wire wheel, designed for a bicycle. A pair is often called a wheelset, especially in the context of ready built "off the shelf" performance-oriented wheels.
A flat bar is a nearly-straight tube, in most cases slightly bent toward the rider. Many penny-farthings and early safety bicycles had flat handlebars. The angle between the slightly swept-back ends of the handlebar and the axis of the stem clamp is known as the sweep angle.
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