I'm especially interested in George Braly and Jack Kane's response, but
everyones input is welcome. I'm currently flying a piper Arrow with the tach
placarded red from 2100 to 2350 RPM. Cruising options are 24 squared or 2100
and ? MAP.  I am using 2100 and 25in.  It runs only 3~4 knots slower, AND
cooler, quieter, and burns less fuel than 2350 and 24in. Is this a problem?
Many people talk about running over square, but fixed pitch prop engines run
over square all the time.


Tom Williams
360FB  ~25%
HNL Intl