This plane crashed due to wing failure. Guess 440 wats was a little to much I miss it
MY father now is flying mostly, 25ish-40ish size airplanes also, were flying all A123 cells now, No lipos for us. These cells are out of the Dewalt 36Volt packs, and can be gotten on Ebay for around $100 for 10 cells, were flying anywhere from 3 to 5 cell packs.
If you want more info about these go to RC groups and read up.
He has the following airplanes:
Extremeflightrc Yak 47" with a Scorpion motor 4 HS-65MG servos, AR7000 RX,running 4 cell A123 2300MAH packs.