Three blade vs two

[stadiumyamaha]

Never have figured this out. Say you have a 440 two blade and a 440 three blade. What's the different characteristics? The three has more surface area but the two bites harder with less cavitation. Any opinions on this.

[Fluid]

Acceleration is usually stronger with the 3-blade, that is because the load is higher and more power is getting to the water. When going from a 2-blade to a 3-blade, it is usual to reduce the prop to 80% of the diameter of the 2-blade. Due to the available props this is not always possible. Pitch is what determines speed.




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[detox]

Acceleration is usually stronger with the 3-blade, that is because the load is higher and more power is getting to the water.

I have noticed this also. My Whiplash exits the turns faster using a 3-blade prop (left sponson tip lifts slightly during take off)