> I have >been toying with the idea of a three bladed,..just for looks and wondered if >it were smaller in diameter, would I not lose efficiency? patrusso ++++++++++++++++++++++++++++++++++++++++++++++++
General rule of thumb (real general) is that with a three blade Vs. a two blade prop, the three blade will give you better takeoff and climb but the two blade will give better cruise numbers. Yes, the prop to cowl interface can greatly affect prop efficiency. That's the reason for prop extensions and the reason I'm using a 5" extension. on my 0-200. Larry Flesner
