I have converted a Norvel Ucan2 that was supposed to be .049-.074 (1/2A, 40 inch wingspan, 24 oz.)and used a GWS 2208/18T ($20) and CSRC 1250 3 cell packs($25). Also a Thunderpower 3 cell 1320 pack. I use a 25amp ESC(overkill.) This thing really flies well and has a lot of flights on it and the motor just keeps going and going. 9x5 prop. Isn't .049 about speed 400?? size.
I also use this combo on a Tiger 400 ARF (not TigerMoth....Tiger). I love the size and performance of these models.

I also had a Phoenix ARF from Hobby Lobby which was a little heavier and a little less nimble with the combo but Hitec HS-81's let me down for the first time and it is kindling.[]

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