Guys, thank you very much Bill and Carl.

That makes so much sense that I should have thought of it myself.

With regards to the propellor washing over the the rudder, then for every propellor turning clockwise (looking from rear), matched with a vertical stabilizer mounted on top, you'd always have to add some right thrust to the engine. A vertical stab mounted on the bottom then (odd, but just an example) would require left thrust.

I don't quite understand the torque effect with respect to rolling the airplane left and causing it to turn left. It seems like the axial torque would definitely change with throttle setting and want to roll the plane but it would take a lift vector component in the "left" direction for the plane to want to turn left (ie banked left) and I imagine we always subconscously correct for this.

Thanks for the search terms to try and thanks for the replies. I've always been curious about this....

Cary

EDIT: Changed polarity of "left" and "right" engine thrust needed as Bill corrected me below.