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Crank length is measured from the center of the pedal spindle to the center of the bottom bracket spindle or axle. The larger bicycle component manufacturers typically offer crank lengths for adult riders from 165 to 180 mm (6.5 to 7.1 in) long in 2.5 mm (0.098 in) increments, with 170 mm (6.7 in) cranks being the most common size.
The crank holds the cones, facing in; adjustment is made via the left-threaded non-drive side cone. One-piece cranks are easily maintained and reliable, but heavy. They are found on BMX bikes as well as children's bicycles and low-end road and mountain bikes. They fit only frames with American sized (also known as "Pro size") bottom brackets.
Micro drive is a type of bicycle drivetrain, mostly BMX and MTB, that uses smaller than standard-sized sprockets. [1] The smallest rear sprocket that fits on a freehub body is a 10 or 11-tooth, but with the use of a cassette hub, sometimes called a micro drive rear hub, sprockets as small as 8 teeth may be used.
Cotter: pin for attaching cottered cranks; Coupler: to connect tubing together; Crankset or chainset: composed of cranks and at least one chainring; Cup: receives ball bearings which roll along its inner surface; integrated on most conventional hubs or can be pressed into older bottom bracket shells. See also Cone
Redline Bicycles is an American company offering BMX, freestyle, cyclocross, mountain (MTB), and road bicycles and components that is currently owned and operated by Regent, L.P. It also owns and operates a clothing line and five race teams. Redline is predominantly known for its long heritage in BMX racing.
Download QR code; Print/export Download as PDF; Printable version; In other projects Wikimedia Commons; ... African BMX Racing Championships; B. BMX bike; BMX racing; D.
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Though originally denoting a bicycle intended for BMX racing, the term "BMX bike" is now used as a generic term to encompass race bikes ('class' and 'cruiser') and those used for freestyle disciplines (street, vert, park, flatland), and dedicated dirt jumper bicycles. Frames are made of various types of steel, aluminum, or carbon fiber.