Originally Posted by Downhilldai
Thanks - I can wait a couple of months.
I've run it with 3 different pitch props: 12" and 13" were both too fine and the 15" was too coarse, so you can see where my conclusion is leading......
The motor's max rpm is 6000 and it only reached 5600 with 1 person on board, running the 15", so I reckon 14" should be spot on.
I've still got the 12" and 15", but the 13" was only with me on a temporary basis.
2 years later......
Do you still havre these?, and what diameter are they? I clocked a touch over 6K on an engine "maxed" between 5300-5800. I have a 13" of unknown diameter. I have also discovered merc 13 spline props appear to come in two diameters. It strikes me the 15 might
be OK if it is less diameter than my current 13.