Bill, The RPM will usually be determined by the attitude of the plane when climbing out at full throttle. Other factors to be considered when comparing one aircraft with another include accuracy of tach, accuracy of airspeed indicator, actual takeoff weight, weather conditions and center of gravity. It's really difficult to do much comparison between planes unless both planes can document all of the factors that affect climb performance. Go through the exercise of documenting your aircraft's climb performance and perhaps others can comment on how your performance numbers stack up against theirs.
John Roach N 2427H > Bill asked: > > Can the group give me a concensus of what the rpm should > > be with a C85, full throttle, on climb out? > > > . > >
