I am going through the same thing. I have a yamaha saltwater series 17 by 15.25 three blade. The engine is an F250. Also on a bracket. It seems as though my cruise is at 4500 at 26 kts burning 10.5 gph. I haven't really pushed it in good conditions yet to see the top end, I will let you guys know though.
What was weird is I went out straight into 2-3 footers, and a 15kt wind the nose stayed down the ride was dry and smooth, no porposing at all. I was thinking man I can't wait to go down sea and let it scream. I turned down sea and the but was up and down, and I lost 3 kts at the same RPM. Ride became a little wet also. Also as soon as I drop below 4300 RPMs the boat is flirting with coming off plane. I am a little bothered by how high I have to keep the RPMs to stay on plane. I am seriously considering the 4 blade prob...
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04-18-2012, 08:46 PM
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