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A bicycle with a 26-inch wheel, a 48-tooth chainring, and a cassette with gears ranging from 11 to 34 teeth has a lowest gear of 26 × 48 / 34 = 37 gear inches and a highest gear of 26 × 48 / 11 = 113 gear inches. For bicycles with 700c wheels, some cyclists quote gear inches based on a nominal wheel diameter of 27 inches, corresponding to the ...
Junior Dragsters. The Junior Dragster or Jr Dragster is a scaled-down version of the top fuel dragster. The cars were developed in New Zealand in 1988, with classes developed by the New Zealand Hot Rod Association. [1] The National Hot Rod Association in the USA began sanctioning the class in 1991, with the JDRL (Junior Drag Racing League). [2]
Two Top Fuel dragsters side by side during an NHRA event in 2012. Top Fuel is a type of drag racing whose dragsters are the quickest accelerating racing cars in the world and the fastest sanctioned category of drag racing, with the fastest competitors reaching speeds of 338.94 miles per hour (545.5 km/h) and finishing the 1,000 foot (304.8 m) runs in 3.641 seconds.
The gear range is difference between the highest and lowest gear ratios and may be expressed as a percentage (e.g., 500%) or as a ratio (e.g., 5:1). Heel [ edit ]
Top Fuel drag race between Don Prudhomme and Kenny Bernstein in 1991 in which Prudhomme's dragster caught fire Drag racing is a sport in which vehicles compete to see which can travel a specific distance the fastest from a standing start. To achieve high acceleration, drag racers have large tires, and the tires often "burn rubber" by friction ...
Crawl ratio is a term used in the automotive world to describe the highest gear ratio that a vehicle is capable of. Note that gear ratio, also known as speed ratio, of a gear train is defined as the ratio of the angular velocity of the input gear to the angular velocity of the output gear, and thus a higher gear ratio implies a larger speed reduction, i.e. the input speed is reduced more at ...
Drag Safari would lead to the 1955 US Nationals for drag racing. [2] Due to the coronavirus pandemic in the United States, the NHRA cancelled its 2020 and 2021 editions of the Drag Racing Series at the Virginia Motorsports Park. Regular scheduling resumed in 2022, with the events taking place in May of that year. [4]
One standard option for the Brompton folding bicycle is to use a 3-speed hub gear (roughly a 30% difference between gear ratios) in combination with a 2-speed derailleur gear (roughly a 15% difference) to give 6 distinct gear ratios; this is an example of half-step gearing. Some Brompton suppliers offer a 2-speed chainring 'Mountain Drive' as ...