Good weather so I have flown each day for the past 6 days. I note that engine RPM varies a bit more than I like. It can raise or lower a 100 rpm easily, and the only thing I can 'figure' is that small altitude or pitch changes that load the engine differently are the reason I see this RPM change.
Do you see the same thing on your RV-12?
Do you see the same thing on your RV-12?