NEED HELP - ADVICE 2574 GCW WOT 5300 rpm

Mike Hill

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I am looking for advice from you guys as I am a new Bennington owner as well as a newbie as a boat owner

Boat - 2574 GCW - Express Tube Package

Motor - 150hp Yamaha 4 Stroke

Prop - 3 blade yamaha - purchased with the boat - pitch unknown to me.

Performance - 2 person, 5300 rpm, 35mph - no wind, still water.

From what I understand the pitch angle is too high causing the motor WOT not to reach 6000rpm.

I understand a 1" reduction in pitch angle will result in an increase of appx 150rpm. That said it seems a 2" reduction in pitch is what would allow my motor to reach WOT more closer to the 5800 - 6000rpm.

My question is just because the rpm increases, if I am reducing pitch It seems I wont neccesarily increase speed?

I have read on the internet and am curious about a 4 blade prop vs. 3 blade. It seems to me I by going to a 4 blade prop would result in less strain on the motor and also increase RPM without decreasing pitch.

So with all that ramble, the question is. 4 blade or 3 blade recommendations and how much reduction in pitch do I need?

Thank you in advance for your expertise and advice

Mike Hill

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