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Most bikes have positive trail, though a few, such as the two-mass-skate bicycle and the Python Lowracer, have negative trail. [12] Trail is often cited as an important determinant of bicycle handling characteristics, [13] [14] and is sometimes listed in bicycle manufacturers' geometry data
1982 Hon Convertible folding bicycle 30th Anniversary Special Edition Dahon folding bike (2012) A folding bicycle is a bicycle designed to be folded up or otherwise reduced into a more manageable shape/size package or set of packages for ease of storage or portage. That includes take-apart bikes.
Dahon is the world's largest manufacturer of folding bicycles [5] [need quotation to verify] with a two-thirds marketshare in 2006. [6] The company was founded in 1982 by David T. Hon, a former laser physicist, and is headquartered in Los Angeles, California, with assembly factories in China, Macau and Bulgaria. [7]
In engineering, span is the distance between two adjacent structural supports (e.g., two piers) of a structural member (e.g., a beam). Span is measured in the horizontal direction either between the faces of the supports (clear span) or between the centers of the bearing surfaces (effective span): [1] A span can be closed by a solid beam or by ...
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The bicycle helmet arm of Bell was split off in 1991 as Bell Sports Inc., having completely overtaken the motorcycle and motorsports helmet business. The first commercially successful purpose-designed bicycle helmet was the Bell Biker, a polystyrene-lined hard shell released in 1975.