I have Great Planes 202 in 1/4 scale,weighs in at 16 1/2 lbs ready to fly with an OS 1.6, pitts muff, 16x8 sometimes 18x6 wood pro.Not quite enough thurst to pull out of a hover, but enough for all the other tricks.OS claims 3.7 bhp @ 9000 rpm, with muffler, about 41oz. Hope this helps. Dan. Oh, I forgot to mention, this plane also has a 18oz. smoke tank & sullivan smoke pump.