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Old 06-11-2013, 12:22 PM   #15
Winnilifer
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Default 350 Mag Bravo Duo Prop (contrast OB)

Quote:
Originally Posted by BroadHopper View Post
No one talk about the number of blades. The higher the blade count the more torque is applied to the water. A 4 blade tend to slip less than a 3 etc. This is the reason the Bravo III setup are very popular with heavier boats. I am not familiar with tritoons but I can imagine that a 4 blade will be more efficient than a 3 blade. Whan increasing a blade count, decrease the pitch about an inch to get the equivalent RPM you had with the 3 blade.

There are 5 blades, but they are used in water ski crafts and bass boats for better 'hole shots'.
BH is correct the 300HP I/O Bravo III with Duoprop GPS's at 41 - 43 mph with 1/2 tank fuel and 4 people aboard (Boat is a Benne 25Q). The holeshot is not unlike my last comp. ski boat (well almost) as I have slalom skied behind it. I would imagine top end would improve with different prop set up. That won't happen
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