Well I weighed it on a set of certified scales from Todd H. it weighed, ready to fly, 20 lbs' 3 OZ's,, It is hard to explain but popping up into walls, doing high speed pullouts say out of a blender it trys to tip stall more than usual, it has just alittle to high wing loading than it needs to have for full out 3d,,, so I will save alittle over a pound and ahalf on just the engine,,,have ordered carbon fiber wingtube and carbon gear, am going to switch to Lithiums, lighter tires,, I should be hitting around,,, 17 lbs,, It should make a world of difference in the stability of 3d maneuvers,, the plane has always flown great(sport flying) but as I said I know what I am talking about with the wing loading + 3d ,,,,