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Propeller size and pitch

Posted: Mon Nov 16, 2015 4:15 pm
by Now Voyager
Help please. I need to replace a fixed, 3-blade, aluminum propeller for my PDQ 36 LRC, but am uncertain about the size to order. I have Yanmar
2GM20 diesel engines with Yanmar SD20 sail drives. I think that the correct 3-blade propeller diameter is 14" and pitch is 12 or is the diameter 15", with pitch 12. A SD20 manual that I have says to use the largest diameter that the allotted space will accommodate. - Fair winds, Doug