I played with my Astroflight Whattmeter a bit last night. At full power I see just under 50A and 650 - 700W, depending on which battery I use. Ironically my 3700 mAh batteries put out more power than my 4000 mAh pack, with the added benefit of weighing an ounce or two less.

At my actual, straight-and-level, cruising-around throttle setting the system pulls 17.5A.

If I take my 4000 mAh battery, I figure I can safely pull 3500 mAh out of it. This is 3.5 Amp-hours, or 210 Amp-minutes. Divide this by my full-throttle setting of 50A and I find I have (210 Amp*min)/(50 Amps) = 4.2 minutes.

For the cruise setting (roughly half throttle stick) I have (210 Amp*min)/(17.5 Amps) = 12 minutes.

Again these numbers are STATIC, and the current draw will drop as the prop loading drops off with an increase in forward speed. Turning a prop at a specific setting requires less power (and is more efficient) when the plane is moving forward.

For 3D flight I typically fly at a lower power setting, and pulse the stick to rev the motor, which provides an extra blast over the control surfaces in some specific attitudes to keep the nose up. IMAC-type flight typically requires more power.

Stang Killa I bought the plane from Tom with the power system/servo combination. It includes some Power-HD servos, but I can't recall exactly which servos they are. They are great for the elevators and ailerons and passable for the rudder, although I think I will switch to the Power HD 2213 like you are using as I find I am fighting a bit of blowback.

As for the CG, I would recommend going with Tom's suggestion as a starting point. Further you should be sure your elevator halves are tracking one another as precisely as possible. Beyond that is is simply a matter of finding the proper amount of elevator travel to force the wing to stall all at once. If the elevator doesn't have enough travel, or if they don't match each other, any plane will fall off to one side or another when entering a harrier. The elevators are very large and will have a large effect if they don't match up.

That being said I would also stick with the recommended 12* elevator travel setting for regular flying based on the size of the elevators. This was just about the right amount of travel for me.

Question: Tom, is your CG recommendation based on the Edge wing or the Slick wing (or both/either)?

Note: My plane, RTF but minus the battery, weighs 42.5 oz. Considering the size of the plane I find this airframe is very light.