Optimum Propeller MAC19 for max speed - 40 hp Yamaha

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Gustas
Posts: 1
Joined: Fri Jan 03, 2014 7:39 am
Sailboat: MacGregor 19

Optimum Propeller MAC19 for max speed - 40 hp Yamaha

Post by Gustas » Wed Aug 15, 2018 1:47 pm

I'm sure this topic has been covered, but have struggled to find info to my question through search.

What is optimum :mac19: prop sizes/pitch/# of blades to find the optimum max speed/skier towing best prop for a 40 hp 4-stroke, 2014 year if it matters.
With prop 11-1/4 x 13 and ballast empty, one person on boards I can achieved max speed 28 kmh/ 17 mph (rpm 4400).

Any help with search advice of direct info about right size/pitch propeller would be much appreciated.

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