Thread: Discussion norvel .074 break in
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Old Oct 03, 2012, 02:33 PM
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Elevation has nothing to do with engine RPM on a given prop. As elevation increases the air density decreases both the engine and prop work with the reduced density. Engine power output does drop, but so does the required torque to drive the prop. The result is virtually no change in RPM with air density.

I suspect a bent rod. The engine will have to come out sooner or later. 12kRPM on a 6x3 is less than 50% the power it should make. This indicates a problem be fixed not additional break-in time.

Greg
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