I am working a project were we are planning to run with a surface drive, and are have too much power for outboard propeller and insufficient power for the CNC cleavers from mercury racing and from Herring.
I think the older 3 bladed Speedmaster Propellers might be a good fit. Does anyone have any formation about these propellers, like what diameters and pitches were available etc? Would also like to know the spec of the spline (19teeth?) and what the propeller shaft should look like to take the propeller. Would also be interested in old sales material for these props. Loads of questions.
Thanks in advance.

I am not a prop-guy -- I just have a couple spare props we purchased for a surface drive project.

(1) 16.5 x 24 3-blade cleaver
(1) 16.5 x 26 4-blade round ear w/cup

both have 19 spline / 1.25 dia for a short hub 4"

Once you get some info and if any interest -- pm me

I also have a R/H 16 x 23 NIBRAL cleaver and a L/H 16 x 28 Mercury stainless offshore cleaver with thinned blades and a repair done on 1 blade.
They are for 19 spline shaft / 1.25 diam. with 4" hub on prop.