Thanks for the replies guys. I was curious as to what others may have experienced when increasing prop pitch with reference to fuel consumption.
I never paid much attention to it before, not noticing much, if any, difference in fuel consumption when increasing prop pitch, but a recent fight brought the question to mind.
I increased prop pitch by 1/2 inch and used the same launch RPM, since I wanted to increase flight speed a bit. The measured fuel load was the same for both props. With the lesser pitch prop I had 6 to 10 laps after the clover. With the 1/2 inch greater pitch prop, the engine quit going uphill after the last loop in the clover. I removed less than 1/4 ounce of fuel from the tank after that flight, so I am pretty confident that it just ran out of fuel. I saved the plane, but I don't care to experience that again.
I will increase the fuel load to ensure an adequate amount and then work backward, reduce fuel load, for the proper run time.
I was just curious if anyone else had had a similar experience when increasing prop pitch.
Thanks;
Larry