Asking for information here, not as a challenge. The OS site lists 14X6, 14X8 and 15X7 as suggested props. I ordered both the 14" sizes to try when I ordered the engine. How do you get to a 13X6?

I've got enough time on the engine now, ( 6 flights and at least 3 tanks of fuel) that I should be able to go ahead and lean it out for optimum power. What kind of RPM should I expect with either of the 14's or the 13 that you suggest?

Thankis.