Thinking about putting one of these on a 86 inch Phoenix Stinson Reliant. I get good top end power. Xoar 18-8 7400 RPM. Valley View 19-8 7000 RPM. Valley View 20-8 6700RPM.( I think the Valley View wood props are same as Falcon.)
My only complaint is that below 2000 RPM vibration amplitude increases significantly. At 1700 RPM it really has the shakes.
So ...I'm looking for suggestions on how to smooth out the idle. Maybe check valve clearance, Use higher octane fuel. Retard timing a bit. Anyone out there have success in smoothing out their idle?