By Frank Rowland Whitt, David Gordon Wilson
The second one version of Bicycling Science comprises new info on fresh achievements and experiments in human-powered transportation, from the "ultimate human-powered vehicle" (UHPV) within which supine riders can in attaining speeds good over 60 mph, to human-powered airplane, boats, and rail transportation. New chapters hide the historical past of bicycle and humanpower expertise and technological know-how, and the speed-power relationships of assorted modes and automobiles together with functionality predictions for the UHPV and the "commuter human-powered vehicle." The chapters on braking, guidance, friction, air drag, rider cooling, and transmissions and gearing have all been enlarged and up-to-date. James McCullagh, editor of Bicycling journal has written a Foreword for this version which additionally contains many new illustrations.
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Extra info for Bicycling Science (2nd Edition)
Bicyclists saw that, as in the case of the "safety" versus the highwheeled bicycle, a development had arrived that promised not only greater speed, or the same speed with less effort, but greater comfort and, especially, greater safety. Within four years, solid tires had virtually disappeared from new bicycles, and Dunlop was a sterling millionaire. With the arrival of the pneumatic-tired directsteering safety bicycle, only refinements in components remained to be accomplished before the modern-day bicycle could be said to have been fully developed.
Haldane, Respiration (London: Oxford University Press, 1922). 5 Average speeds and estimated breathing capacities in 50-mile trials (1971) as a function of age. trapolated to 80 years, the estimated breathing capacity is indeed very close to half the peak value. (These results are for athletes. ) These data are also given some confirmation by the performances at different times of Reg Harris, the former world champion sprint bicyclist. 9 m/sec) for the final 200-meter sprint on the track. (In this final spurt his muscles would largely be working anaerobically).
4 637 63 385 245 1175 98 Sources of data "Velox," Velocipedes. Bicycles and Tricycles: How to Make and Use Them (London: Routledge, 1869); M. G. Bekker, Theory of Land Locomotion ( Ann Arbor: University of Michigan Press, 1962); G. A. Dean, An analysis of the energy expenditure in level and grade walking, Ergonomics 8 (1965), no. 1: 31-47. 2 2 a. 6 ft ), tire pressure 100 lbf/m2 (689 kPa). 2 2 b. 5 ft ), tire pressure 50 lbf/m2 (345 kPa). 04 kg) cycling on the level in still air. It is assumed that, for every liter of oxygen absorbed, 24 liters of air have to be breathed.
Bicycling Science (2nd Edition) by Frank Rowland Whitt, David Gordon Wilson