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A governor, or speed limiter or controller, is a device used to measure and regulate the speed of a machine, such as an engine.. A classic example is the centrifugal governor, also known as the Watt or fly-ball governor on a reciprocating steam engine, which uses the effect of inertial force on rotating weights driven by the machine output shaft to regulate its speed by altering the input flow ...
The fastest production motorcycle for a given year is the unmodified motorcycle with the highest tested top speed that was manufactured in series and available for purchase by the general public. Modified or specially produced motorcycles are a different class, motorcycle land-speed record .
After the period of experimental steam and internal combustion motorcycles, the uncertainty dissolves on the question of the first production motorcycle. The 1,489 cc (90.9 cu in) liquid cooled four-stroke Hildebrand & Wolfmüller of 1894 was the first motorcycle produced in quantity and sold commercially. [6] [11] [12] [13]
The Shovelhead engine is a motorcycle engine that was produced by Harley-Davidson from 1966 to 1984, built as a successor to the previous Panhead engine. When the engine was first produced, the Shovelhead had a shallower combustion chamber, larger valve drop for both intake and exhaust, better porting, and stronger valves and pistons.
The first generally recognized motorcycle speed records were set unofficially by Glenn Curtiss, using aircraft engines of his own manufacture, first in 1903, when he achieved 64 mph (103 km/h) at Yonkers, New York using a V-twin, and then on January 24, 1907, on Ormond Beach, Florida, when he achieved 136.27 mph (219.31 km/h) using a V8 housed in a spindly tube chassis with direct shaft drive ...
With power typically being the product of force and speed, a motorcycle's power and torque ratings will be highly indicative of its performance. Reported numbers for power and torque may however vary from one source to another due to inconsistencies in how testing equipment is calibrated, the method of using that equipment, the conditions during the test, and particularly the location that ...