
SitNFly...
My goal is to increase about 400 RPM. On both engines with those props I could use another 2-400 RPM. I don't want to under prop too much either. This is my first gas experience and I'm green with this. I figured the drop in diameter would make the most difference but I don't want to increase 800 RPM either so I'm struggling with which one would give me about 400 RPM
Thanks
Barry