No, no toes stepped on (although it is good for you to reread what you write:-). You said way early up in the thread -

------ I don't see much mention in this forum regarding airframe construction and power plant developement. My own gut feeling is that improvements in engines and airframe materials influence development in aircraft - far more than any changes /improvements in the aerodynamics leg of this 3 legged stool.
What do you think? --------

and I answered that I thought it isn't necessarilly so and said so. To my thinking the improvements have all pretty much gone together, otherwise we would still be flying biplanes made of carbon fiber with jets on them. (Ignore the fact that the Franklins have a jet powered biplane that they use in airshows, a great show if you have never seen it, fire and smoke and noise everywhere). It takes a big engine to push bad aerodynamics but good aerodynamics can use a small engine. I think the 3 legged stool needs all three legs, aero, propulsion and structures but you must admit that you tend to think the aero leg can be pretty short.

Of course the reason you don't see much regarding airframe construction and power plant developement here is that the forum is labeled Aerodynamics or some such label (sorry, couldn't resist).

Are you the Hanson that did the Edge 540 review in 3-DFlyer? If so it was a good read and I am a little jealous, that must have been fun.

Did you see the error in Jason Noll's talk about propellers? He talks about the 2 bladed prop having a disk area, the smaller 3 bladed prop having a smaller disk area and therefore the smaller disc size means there will be less drag on the down lines.

He forgets that there are 3 blades making drag compared to the 2 blades. The concept of disk area is valid only when thinking about props of the same number of blades. It is just a simplification of the more complex way looking at the change of the local angle of attack on the prop blade due to the forward velocity and rotational velocity and resultant lift and drag vectors. But not understanding the aero of the problem gives misunderstanding of the physics.