Monday, February 6, 2012



john boyd dunlop

john boyd dunlop
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john boyd dunlop

Bicycle - a High Utility Vehicle

by Bicycle Parts

Evolution of bicycle commenced in 1818 with push bikes or hobby horses which were like a wooden frame supported by two in-line wheels and the rider used to push it with his feet while navigating the front wheel. Then in 1839 it was refined, as a mechanical crank drive was added to the rear wheel. [...]

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