Posted by bill mart on April 15, 2013 at 21:50:35 from (205.188.116.65):
In Reply to: Lycoming motor posted by fordman bob on April 15, 2013 at 16:03:57:
Got me thinkig about the "Tucker" car.It used an air cooled engine,heres a little excerpt from wikipedia. Bill
Tucker had promised 150 hp (112 kW), and his innovative 589 engine was not working out. The large 589 cu in (9,650 cc) engine functioned, but the valvetrain proved problematic and the engine only produced approximately 88 hp (66 kW). The high oil pressure required a 24 volt electrical system and long cranking time at start-up. Having wasted nearly one year trying to make the 589 work, Tucker started looking for alternatives.
The company first tried the Lycoming aircraft engine but it would not fit in the car"s rear engine compartment. A Franklin air-cooled flat-6 engine, the O-335 made by Air Cooled Motors (and originally intended for the Bell 47),[14] fit, and its 166 hp (124 kW) pleased Tucker. He purchased four samples for $5,000 each, and his engineers converted the 334 cubic inches (5,470 cc) engine to water cooling (a decision that has puzzled historiographers ever since).[14] The Franklin engine was heavily modified by Tucker"s engineers, including Eddie Offutt and Tucker"s son Preston, Jr. at his Ypsilanti machine shop. Using an aircraft engine in an automotive application required significant modification; thus, very few parts of the original Franklin engine were retained in the final Tucker engine. This durable modification of the engine was tested at maximum power for 150 hours, the equivalent of 18,000 miles (29,000 km), at full throttle
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