The fuel system of a hit-and-miss engine consists of a fuel tank, fuel line, check valve and fuel mixer. Small functional pieces were made of steel and machined to tolerance. Typically, the material for all significant engine parts was cast iron. A typical 6 horsepower (4.5 kW) engine weighs approximately 1000 pounds (454 kg). When these engines were designed, technology was less advanced and manufacturers made all parts very large. The flywheels store energy on the combustion stroke and supply the stored energy to the mechanical load on the other three strokes of the piston. The flywheels maintain engine speed during engine cycles that do not produce driving mechanical forces. It is a type of hit-and-miss engine.(2min 16sec, 320x240, 340kbit/s video)Ī hit-and-miss engine is a type of flywheel engine.A flywheel engine is an engine that has a large flywheel or set of flywheels connected to the crankshaft. This is a video montage of the Otto enginesrunning at the Western Minnesota Steam Threshers Reunion (WMSTR), in Rollag, Minnesota. Some of the largest engine manufacturers were Stover, Hercules, International Harvester (McCormick Deering), John Deere and Fairbanks Morse. Many engine manufacturers made hit-and-miss engines during their peak use-from approximately 1910 through the early 1930s when more modern designs began to replace them. The sound made when the engine is running without a load is a distinctive "POP whoosh whoosh whoosh whoosh POP" as the engine fires and then coasts until the speed decreases and it fires again to maintain its average speed. This is as compared to the "throttle governed" method of speed control. The name comes from the speed control on these engines: they fire ("hit") only when operating at or below a set speed, and cycle without firing ("miss") when they exceed their set speed.
It was conceived in the late 19th century and produced by various companies from the 1890s through approximately the 1940s. A hit-and-miss engine is a type of four-stroke internal combustion engine that is controlled by a governor to operate at a set speed.
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