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Old Sep 11, 2012, 10:44 PM
kahloq is offline
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Fort Collins, Colorado, USA
Joined Dec 2005
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3 blade will load the motor up more. It is somewhat less efficient too, but not a massive amount.

Basically....if you have a 24x12 2 blade, and a 24x12 3 blade, the two blade will fly the plane faster. There's less mass for the motor to spin and less turbulence produced.
On the other hand, the 3rd blade on a 3blade prop adds more thrust, but due to the increased turbulence, the work the prop is doing is less effective.
So a 24x12 3 blade basically would be comparable to a 25x11 2 blade.
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