Abstract
Abstract In the first half of the 1890s the bicycle took on broadly the appearance it has today. The technical uniformity attained signalled the solution of a number of practical problems: the diamond frame of hollow steel tubing combined adequate strength with lightness and elasticity. Ball bearings in the headtube, bottom bracket and hubs united minimum friction with durability. Finally, pneumatic tyres solved the suspension problem, while roller chain drive to the rearmost of the two now equal-sized wheels, along with the latter's construction of heavy tangential steel spokes to steel rims, rendered the transmission of power considerably more efficient.
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