Sport 13 Yamaha 40-HP
Posted: Fri Jan 08, 2021 8:58 pm
I am in the midst of a project on a 1977 Sport 13. I have a 1988 Yamaha 40-HP two-stroke-power-cycle engine. The propeller is beat up, has no markings, and I can't tell its size. The owners manual for the motor lists 11-3/4 x 12 - G, but I think that number is an exemplar.
Give me a recommendation for an aluminum, three-blade, modestly priced, standard propeller that will give middle-of-the-road performance. I do not require extra top speed or rapid acceleration from a standing start. The boat will be plenty fast as it is. I require a propeller that will allow the engine to accelerate to more than 4500-RPM and less than 5500-RPM at full throttle.
Give me the diameter and pitch for the propeller you have used with a Yamaha 40-HP engine which gave good all-around performance.
Bob Ross
Give me a recommendation for an aluminum, three-blade, modestly priced, standard propeller that will give middle-of-the-road performance. I do not require extra top speed or rapid acceleration from a standing start. The boat will be plenty fast as it is. I require a propeller that will allow the engine to accelerate to more than 4500-RPM and less than 5500-RPM at full throttle.
Give me the diameter and pitch for the propeller you have used with a Yamaha 40-HP engine which gave good all-around performance.
Bob Ross