Don,

I am currently ready to fly a Lanier Predator 500 converted to electric. It uses a Great Planes aluminum adjustable motor mount, a Turnigy SK Aerodrive XP 35-42-1000 turning a 9 x 7.5 or 9 x 9 APC "E" on 4S 20C 2350 Rhino Li-Poly cells. The all up weight of the airplane is 3lbs, 13 ozs. I have tested it on the ground and the system is capable of sustaining close to 600 watts. (Tested with Eagle Tree Data Logger) The goal is to be competitive with a TT40 Pro both in speed and cost. I have ordered a Turnigy SK Aerodrive XP 35-48-1100 in case the 35-42 isn't enough. All testing has indicated that the system will do it.

Total powersystem cost:
Motor $33 (Turnigy SK Aerodrive XP 35-48-1100)
ESC $43.89 (Turnigy Plush 60Amp)
Battery $32.83 (Rhino 4S 20C 2350)
Balancing Li-Poly Charger $27.68 (Hextronik 8080)

I will post as soon as the weather breaks. We are supposed to get some decent flying weather next week. This system would be great in the Wingman II as well.