1. The Ram Air engine adds sex appeal and 25 percent to the price. 2. It had twin propellers and was powered by a compressed-air engine . 3. Duplicated electrical and compressed air engine start systems are also used. 4. The Ram Air engines did not return for 1971. 5. This has been done by equipping the scooter with a compressed-air engine and air tank. 6. The submarine used a compressed-air engine , propelled by stored compressed air powering a reciprocating engine. 7. Armando Regusci's version of the air engine has several advantages over the original N�gre design. 8. Essentially, it would have been a hot air engine using a turbine instead of a piston. 9. That would imply the 400 CID V8 Ram Air engines had less than 310 hp net. 10. A schematic representation of a thermoacoustic hot-air engine .
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