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Looking for prop explanation, not just answer
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<blockquote data-quote="DaleH" data-source="post: 424248" data-attributes="member: 15636"><p>I for one would NEVER put a prop on the boat that didn't allow the OB to turn screws<em> to be no more than 200 RPMs</em> off the started maximum (which may be higher RPMs than where it was 'rated'). So in your case, with that 7K max motor, I'd pitch her to run up 6,800 with normal gear, me alone and 1/3 to 1/2 fuel. </p><p></p><p>One can chase their tail and spend good $$ optimizing prop slip, but to me, if you invest in a premium aftermarket prop, then you'll be way ahead. In the smaller motors I've had great success with the new pressed aluminum 4-blade props by Turning Point, while in my old tuna boats (now all sold off ...) I ran 4-blade PowerTechs on the big Suzi 4-strokes. Merc <em>Inertia</em> props were always held in high regard for V6 motors, but the Suzi 250s and up run a 16" wheel, otherwise those Mercs props were just too small in diameter.</p><p></p><p>Prop slip cannot be eliminated ... but it can be minimized!</p></blockquote><p></p>
[QUOTE="DaleH, post: 424248, member: 15636"] I for one would NEVER put a prop on the boat that didn't allow the OB to turn screws[i] to be no more than 200 RPMs[/i] off the started maximum (which may be higher RPMs than where it was 'rated'). So in your case, with that 7K max motor, I'd pitch her to run up 6,800 with normal gear, me alone and 1/3 to 1/2 fuel. One can chase their tail and spend good $$ optimizing prop slip, but to me, if you invest in a premium aftermarket prop, then you'll be way ahead. In the smaller motors I've had great success with the new pressed aluminum 4-blade props by Turning Point, while in my old tuna boats (now all sold off ...) I ran 4-blade PowerTechs on the big Suzi 4-strokes. Merc [i]Inertia[/i] props were always held in high regard for V6 motors, but the Suzi 250s and up run a 16" wheel, otherwise those Mercs props were just too small in diameter. Prop slip cannot be eliminated ... but it can be minimized! [/QUOTE]
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Looking for prop explanation, not just answer
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