Guys,

I really thank you all for the EXCELLENT infos! Dick, I understand what you mean, thanks for the experienced reply! I agree with you, really thanks for that.

Gearup, really good point about prop drag! So, since parasite drag increases with the square of prop angular velocity, and induced drag is linear with pitch (I think...), I ask: can we say that if we want to reduce slipstream we should primarily concentrate on reducing rpms, rather than pitch?