Originally Posted by Northern Pike
FWIW, I went from a 15 pitch to a 17 pitched prop on my 40 and only gained about 2 mph, maxing out at about 31 mph. I think the hull is main the limiting factor now. I'm hoping more HP might gain me a little more speed, but also will allow me to reach close to max speed with a greater payload, i.e. 3 or 4 fully kitted divers.
Which again makes me wonder if I need to go with 60 HP, or if 50 might suffice.
My 1993 Evinrude must be broke! It is bolted to a MKII Futura Sport GT. I have a 11 3/4" x 17" and top out at 28.5 mph max, in rough water solo. Usually slower though around 24 mph loaded and can only hit 4,800 RPM. I have been searching for a 15" pitch prop, wanna sell yours? Sounds like our boats have similar purposes...to get divers out to dive sites.