I get this stuff because I have a degree in it - and taught it in the Air Force for 11 years. (Blow 'n Go - if you get in trouble, hit the afterburner and go around - as I would tell my students!) I flew RC long before the AF. I'll be happy to explain what I am writing..........but there is no need to make up accusations about what I can or can't do that have nothing to do with the topic at hand. I assumed you guys were interested in learning something, but it's no sweat if you want to keep your flat earth theories.

Chip, I have 250 flights on your AW ultimate. It is very docile in an inverted harrier, but wing rocks like a SOB on a windy day when upright. I have had the CG forward with a 3W200 and so far aft with a DA150 that the plane climbs when you roll inverted - but its behavior in harrier is unchanged. It stops rocking with rudder, but starts quickly after........because it is unstable in yaw at this angle of attack. Inverted it does not rock, but you must use rudder to control the roll.

Vertical fin area needs to be added to the bottom of the fusealge to stabilize an upright harrier (a la F-16). Fin area on the top of the plane is blanketed by the elevator and fuselage when the free stream airflow approaches 90 degrees and is ineffective.

3DFanatic's example is a perfect demonstration of changing yaw stablility and the result. At 30 degrees of elevator throw the airflow was not that bad over the rudder and the plane was steady. At 50 degrees, you are blocking a considerable portion of the vertical stab with a big board (the elevator), disrupting the airflow, so the configuration becomes unstable in yaw. The result - wing rock.

By the way, I mix aileron into my elevator to get the best of both worlds. Aileron in the elevator does not create gobs of adverse yaw like the ailerons do. My aileron control does work in a harrier, but not like the rudder! I use both aileron and rudder to stop the rocking too, but rudder is the primary. The harrier is an unstable position for our models to fly in.........It takes a little work to keep them there.

.........you can land a plane with no elevator (using power to control pitch), and turn it with no aileron control (using rudder to roll), and you can learn to do both very well.......but that doesn't mean you are using the best control for the job. And for you groupies, I have done both with my fanny in the seat, not reading a book or watching a video.

CJ