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Old 11-21-2015, 08:16 AM
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Crosley CoBra (1946-1949)

The CoBra (Copper Brazed, also known as "The Mighty Tin") was originally developed by Lloyd Taylor, of Taylor Engines in California, for military use aboard PT boats and B-17 Flying Fortress bombers. The engine was made from sheet metal rather than cast iron like most other engines. This was done to get a thin, uniform wall thickness and thus avoid the creation of hot spots around the combustion chamber that could ignite the fuel, causing pre-ignition (knocks), which in turn limited the compression ratio. These engines were used mainly to power generators, refrigeration compressors, etc., and were widely praised for their successes in the war effort.

The engine was adopted for automobile use in 1946. It was a small, lightweight engine with single overhead camshaft driven by two sets of bevel gears and a vertical shaft at the front of the block. The unitary block and cylinder head weighed only 14.8 pounds (6.7 kg) dry; complete with all accessories (including the flywheel) weighing only 133 pounds (60 kg). The engine displaced 44 cu in (724 cc) and produced 26.5 hp (20 kW) at 5,400 rpm. Longevity was measured in hours and was strictly controlled by equipment maintenance schedules for the wartime duties, but corrosion became a problem for these engines in civilian service. This problem with these automotive powerplants had tarnished Crosley's reputation by 1948.

Source: wikipedia.org

(Pictured, Crosley HotShot Roadster 1949-1952 #2)
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