La Ya Aluminium products Co.,Ltd.
http://tinyurl.com/Bicycle-Suspension-Cruiser-12A short tutorial video on how to remove crank arms from your bicycle for maintenance or component switch.Materials Cranks are constructed of either an aluminum alloy, titanium, carbon fiber, chromoly steel, or some less expensive steel. Tubular steel cranks (such as Tioga’s Revolver) can be light and very strong, are usually found on bmx bikes, and are slowly finding their way to mountain bikes (Dirt jumping and Urban assault) . Aluminum cranks may be cast, hot forged or cold forged (“cold” in this context means the billet from which the crank is to be made is heated to a specified temperature well below the melting point, not room temperature). Cold forging gives the metal additional strength, and the cranks can therefore be made lighter without increasing the risk of breakage. Shimano “Hollowtech” aluminum cranks are made by forging the main arms around a hard steel insert which is then withdrawn, leaving an internal void to save weight. They are then welded up before final machining.I created this video with the YouTube Video Editor (http://)For more new videos: http://youtubevv.blogspot.mx/Our intent is to study, criticize, comment and share on Video: We have found that this Video is worth sharing and in good content “No Copyright Intended”
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