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All Franklin cars were air-cooled, which the company considered simpler and more reliable than water cooling, and the company considered light weight to be critical in making a well-performing car given the limited power of the engines then available. Most Franklins were wood-framed, though the very first used an angle iron frame (1902) and ...
In 1947 Air-cooled Motors was purchased for $1.8 million by the Tucker Car Corporation to produce an engine for the 1948 Tucker Sedan. [3] After the purchase, Tucker cancelled all of the company's aircraft contracts so that its resources could be focused on making automotive engines for the Tucker.
Air-cooled engines rely on the circulation of air directly over heat dissipation fins or hot areas of the engine to cool them in order to keep the engine within operating temperatures. Air-cooled designs are far simpler than their liquid-cooled counterparts, which require a separate radiator , coolant reservoir, piping and pumps.
Small limited production of experimental automobiles began in 1902, with an air-cooled V-twin engine. An air-cooled V4 followed the next year, with pioneering V6 and V8 engines tried over the next few years, before more conventional straight engine designs were settled upon. Marmons soon gained a reputation as reliable, speedy upscale cars.
Chester was a race pilot who had a reputation for getting the most horses out of his four-cylinder Menasco, and keeping it reliable at the same time. A new engine was introduced in 1937: the six-cylinder C6S-4 model, rated at 400 hp at 3300 rpm and 70 in of manifold pressure.
Its most successful post-war products were a series of air-cooled flat-4 and flat-6 general aviation engines. Most famous among these are the O-320 and O-360 four-cylinder engines, and the O-540 six-cylinder engine. [21] [22] Many light aircraft are powered by versions of these engines, with power ratings in the 100–360 hp (75–270 kW) range.
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The original design of utility ATVs was offered from 1996 to 2004 and featured single-cylinder liquid or air-cooled motors from 250 to 500 cc, all of a common design. This Arctic Cat-designed motor was manufactured by Suzuki and featured a 2V SOHC design with hemispherical combustion chambers. Manual and CVT automatic transmissions were offered.