I have an old CAP 232 that was kit built some years ago with an 80 inch wing. Maker of the kit?? It's at about 14 pounds with A G-38, it will fly all the IMAC stuff very well but not enough power to do any 3-D. My scratch built Sukhoi had the Brison 2.4 40cc, another 80 incher but at 12 pounds, that was much better but still no real 3-D but A good match, I can't fly 3-D anyway so it doesn't bother me too much. Today the trend seems to be 50cc for 80 inchers and above up to about 15 pounds or so. When the planes get to that size A gas engine is the way to go.