Appreciate the advice and info guys. My comment about "slower approach speeds" was because the Tucano tends to come in kind of hot, speedwise, and the 10x6 on a .40 or .46 on this plane seems to need a lot higher revs to keep it airborne on approach. The FOX .40 and ROYAL .46 need to be revved higher to keep running on approaches and taxing because the engine is installed inverted on this plane. I am installing a glow power system to help this out. The comment about using an 11x10 came from a prop chart of a manufacturer's .46. The Tucano is kind of touchy and will side-slip during approach/landing banking maneouvers using the 10x6 prop if you get the rpms too low on approach. It's a great aerobat. I'll be the first one to admit that I tend to over-control my bird, and don't have a lot of hours yet, but on the G3.5 Sim, I have doing better flights, approaches, and landings with higher pitch props and even those in the 11" range. I don't want it to fly like a trainer, but I don't want to high rev the engine all the time. A lot the guys giving the advice are either 4 stroke owners, or guys using .91 2 strokes, or 110 ys engines in .40 size warbirds to fly fast. So, I figured it would be good to run it by others on the forum. Thanks a mill for the info.