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Old September 18th 07, 03:13 AM posted to rec.aviation.piloting
Dan Luke[_2_]
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Posts: 713
Default running over-square


"Mortimer Schnerd, RN" wrote:

"A power setting of 2200 RPM and 31" Hg manifold pressure is recommended
for
all cruise flight."



Your quotation refers to a turbocharged engine which by definition would
always be operated oversquare in cruise anyway. I doubt you will ever see
31" of manifold pressure in a normally aspirated engine. They just can't do
it.


My engine is a turbocharged engine.

http://tinyurl.com/2jskz7


That being said, I have been a long time fan of using the lowest RPM I can
get away with for cruise flight mostly because of my experience with bigger
twins. The slower they turn, the quieter they are, and the less tired
everybody in earshot becomes.


Yep.

--
Dan
T-182T at BFM