Sport lolfirst off these are full scale planes and this forum is about model airplanes.
Which is why I said that we do not have that issue, but others try to make claim to full scale issues that do not pertain to our models.
Second you’re still off base with your statements. Once you reach a certainlevel of HP/torque a two blade prop will not work. You run into tip speedissues. Hence the reason for more blades and even wider blades. You are partlycorrect in that you need to reduce diameter some and increase pitch to gofaster but adding another blade will draw even more power from the engine. Thiswill lower the max rpm that engine will swing that prop and then will be slowerthan the two blade set up.
No I am right on with my statements. The new 5, 6, 7, and up bladed props are way smaller than required to prevent tip speed issues. In fact they are often replacing much bigger props which did not have tip stall or ground clearence issues. The smaller diameter reduces HP requirments much more than the higher pitch will make up for it, so the extra blades are required for the HP, as well as to get bite in thin air.
See item #6 here
http://www.mccauley.textron.com/von_...erformance.pdf.