ORIGINAL: mrbigg
How about running an APC 14x4W and a 15x4W so I can compare it to my old Saito .82 fourstroke.
I don't have 14x4W. I think the 14x4W would not be enough prop for this engine. I do have a 15x4W. I ran it on one of the first engines and got the best performance of all props I tried using Pe's calculator. I didn't save those numbers. When the weather warms a bit I plan to run both of the new engines on my Bronco. I'll run the 15x4W and let you know the numbers.