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My four-bladed prop comment was directed toward putershark who mentioned the propulse blade in his comment.
My only interest in speed is that a more efficient prop means I will burn less fuel at lower speeds. Some of the guys in my bass club have boats that will do 85mph. I have no interest in going that fast on water. I have to decide if it is worth $200 versus the time it will take to get a return on my investment. I did a little math on the problem:
41mph / 70hp = 0.59 so 0.59 X 75hp = 43.93mph
I know the actual performance curve is not linear, but it looks like I may be getting close to the best I can expect out of my engine.
woodNfish
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