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Thread: Maximum range for NA pistons - down low?
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Old 28th Sep 2012, 06:27
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Lightning Mate
 
Join Date: Apr 2009
Location: down south
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Cough has got it right.

Reduced exhaust back pressure as altitude increases.

Reciprocating piston engines are most efficient when operated at full throttle, because this results in minimum restrictions in the inlet system.
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