I have a invader virada 26.5, with 2 engine 3.0 LX Mercruicer, stern drive alpha one IIgenaration. My propeller are 14x21, I have low rpm 4200 and the speed 31 Knots. Is good velocity, but the starting run is very slow. I need the correct pith or the good combination.
PD
RPM recomended for...
