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Reducing the weight of the bike + rider by 1 kg would increase speed by 0.01 m/s at 9 m/s on the flat (5 seconds in a 32 km/h (20 mph), 40-kilometre (25 mile) time trial). The same reduction on a 7% grade would be worth 0.04 m/s (90 kg bike + rider) to 0.07 m/s (65 kg bike + rider).
The CSA Autobike Classic was the first commercially sold autobike and was equipped with a system of centrifugal weights on the rear wheel with a rear derailleur attached to them. [1] When the rider started pedaling it would cause the weights to spin outwards, which shifted the derailleur to a higher gear.
The price of a new bicycle can range from US$50 to more than US$20,000 (the highest priced bike in the world is the custom Madone by Damien Hirst, sold at US$500,000 [10]), [11] depending on quality, type and weight (the most exotic road bicycles can weigh as little as 3.2 kg (7 lb) [12]).
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When Fish Ride Bicycles is the debut studio album by American hip hop duo The Cool Kids. Released on July 12, 2011, under Green Label Sound Records, [ 1 ] this would also be their second and final release under a major label.
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Motorized bicycle Bicycle 20 1 bhp (750 W) or 50cc 18 for class III No Oklahoma: Electric-Assisted Bicycle Bicycle 30 1000 W Under 19 16 Unclear. Class A, B, C, or D Oregon: Electric assisted bicycle Bicycle 20 1000 W Under 16 16 No Pennsylvania: Pedalcycle with electric assist Bicycle 20 750 W No 16 No Rhode Island: electric bicycle
In science and engineering, the weight of an object is a quantity associated with the gravitational force exerted on the object by other objects in its environment, although there is some variation and debate as to the exact definition. [1] [2] [3] Some standard textbooks [4] define weight as a vector quantity, the gravitational force acting on ...