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Bicycle suspension is the system, or systems, used to ''suspend'' the rider and bicycle in order to insulate them from the roughness of the terrain. Bicycle suspension is used primarily on mountain bikes, but is also common on hybrid bicycles. Bicycle suspension can be implemented in a variety of ways, and any combination thereof: *Front suspension *Rear suspension *Suspension seatpost *Suspension saddle *Suspension stem (now uncommon) *Suspension hub Bicycles with only front suspension are referred to as hardtail and bicycles with suspension in both the front and rear are referred to as full suspension bikes. When a bicycle has no suspension it is called rigid. Bicycles with only rear suspension are uncommon although the Brompton folding bicycle is equipped with rear only suspension. Although a stiffer frame is usually preferable, no material is infinitely stiff and therefore any frame will exhibit some flexing. Bicycle designers intentionally make frames in such a way that the frame itself can absorb some vibrations. Besides providing comfort to the rider, suspension systems improve traction and safety by helping to keep one or both wheels in contact with the ground. ==History== As early as 1885, the Whippet brand of safety bicycle was notable for its use of springs to suspend the frame. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「bicycle suspension」の詳細全文を読む スポンサード リンク
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