Carbon Wheelset Sale

Carbon Wheelset Sale

20mm clincher bike wheelset full carbon fiber 700C hot sale!Super light weight! $458.24

Factory sale!700C 60mm deep clincher carbon wheels/carbon road bike wheel set $498.00

Carbon Fiber An Important Bicycle Component

Considered as an interesting space-shuttle composite just a decade ago, carbon fiber is now utilized in almost every bike part, from frames and components to helmets and shoe soles. Carbon fibers are made of carbon, the ever-present component that forms coal, graphite and diamond and is part of each organic chemical and each life form on earth. Carbon is the 4th most abundant component in the universe and the
2nd most common element in the body.

Polyacrylonitrile ( PAN ) fiber, also the source material for acrylic fiber, is created into carbon fiber by heating it to intense temperatures, burning away essentially everything apart from carbon. The resulting 5-8 micron ( millionths of a meter ) thick fibers are a tenth the thickness of a human hair and made of carbon atoms strongly bonded together in miniscule crystals aligned parallel to the fibers axis. Powerful and stiff, the fibers have a stiffness index of 33 million pounds per square inch ( MSI ) and a coarse surface. Dear processing can strip off this outer surface to reveal a thinner, smoother
Intermediate Modulus ( IM ) fiber that packs tighter with other fibers for higher rigidity per unit area. A costlier processing can create High Modulus ( HM ) carbon fibers, which boasts a Youngs modulus stiffness of 42 MSI to 55 MSI or even more.

Common-modulus fibers are joined together into yarn and woven into fabric. A number followed by the letter K designates how many thousands of fibers are in a strand of the yarn ( as in 3K, for 3,000 fibers per strand ). Woven fabric regularly comprises the top layer for cultured purposes, but most carbon fibers in a cycle part instead come in flat sheets of firmly packed parallel fibers pre-impregnated with epoxy resin stuck to backing paper. Precisely cut pieces ( plies ) are stacked, or laid up, atop each other at opposing angles ( sometimes 45 degrees ), to oppose forces from different directions. Unlike metals, carbon fiber plies within the laminate structure can be orientated to form a composite structure that may be stiff in one specific direction and more
Flexible in another. Indeed, plies must be laid up at angles, because carbon fiber, like thread, is powerful if you pull on it but far weaker if you push lengthwise on it or bend it sideways. However , in a carbon fiber tire bead, you dont want strength in tension alone, so orienting fibers at angles and gluing them together with resin permits the plies to work together, opposing forces from all directions. Subjecting the laminate to high pressure and heat in a mold pushes out air and excess resin.

Well-engineered carbon composite parts have high stiffness and strength, low density and high fatigue life but low elongation they can not stretch or bend much before they break. Disasters come from not properly engineering the directions and kinds of fibers to cope with the loads.

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