RE: Seidel 7-70 radial: Help me decide!
Hi Tom,
Mine is an old ST 770 and I get about 5200 with the 24/10 and 22/12 likewise. The newer ones should run faster... I have a Solo Prop on my Aero (photos and video couple posts back) I run 22 inch blades on that one and have it set to 12 inch pitch.