You know, all this theory is good stuff. But what this thread is about is our model airplanes. And from what we have available in props, we're pretty much stuck with. And testing the one or two available 3-bladers available against the 2-bladers available is going to fall VERY FAR short of ever proving efficiency theory. And theory isn't going to prove a thing, ever.

There is an excellent "signature" quote somebody around here has...... In theory, practice and theory are equal. In practice, they are not.


britbrat,
You're absolutely right. I should have said, "when the P-47 got it's 4, it could outclimb the Spitfires that were then operational". I got that idea from the memoirs of a P-47 pilot who wrote at some length of the mock battles they constantly had over England with the "local boys". He has a piece in his book about the way the Spits would always climb away when he got 'em cornered and how, after he got the 4-blade, HE would climb away. You know, even the longwinded posters like me often don't type enough words sometimes. This time, I have.