This might be a bit of a dull question but here goes anyway
I am wondering whether I can extract any more speed out of my engine so i thought i would start by looking at the prop. Reading up on previous threads, I gather that the 10P stamped on the prop is the pitch. With this prop I am getting 26 to 28 knots.
The engine is late 1980's 40hp Mariner/Yamaha and the boat is a 4m Searider, does this seem like the correct pitch from more rib wise people?
I know I need to the rpm at wot but i don't have a tachometer so i am relying on a bit of guess work, i would like to fit a tachometer but that is probably another thread
The boat takes off fine and at no point does it sound like the engine is labouring but could it go faster...