I was talking to Steve at Blackman and he informed me that my boat was delieved with 1.78:1 ratio DP-D while most have the 1.95:1 ratio. That might explain a lot. I am using A3, speed at idle is 4-5 knots....

Glen
Is your drive a 1.95:1?

Does anyone else have the 1.78:1?
Does anyone have the 2.30:1?

I would think the higher pitch props turning slower (like the 1.95:1) might be better. Anyone have an information as to prop speed VS pitch.


Phil
Phil