Whoaa. Just up front, you gotta know the GP Cap 580 in the .40 size version is not a 3D plane. I love mine with a Saito 72 up front but the plane has almost a 30oz/sq.ft. wing loading. Mine has no lead or added weight in it, I just scooted the rx and battery around to get the CG where it needed to be, it weighs in at 6lbs.10oz. Great sport plane, but cant 3D. No walls, it just high speed stalls and rolls over, waterfalls? The recomended throws on the elevator is only 3/8" so no again. Adding more motor will only push the wing loading higher so that wont work. Its a great flying plane and I wouldnt trade it for anything but this is not the one for harrier torq rolls.

That said, it just puts around very lady like at 1/4 power on the 72 and swinging a 12-6 prop. At 1/2 throttle one can loop and roll all day. At full power on the groung the 72 swings the 12-6 at 11,400 rpm so it will unload in the air by a few hundered rpm and its a wild ride! Bang both sticks in the uper-right corner after you pull vertical for a few hundered feet and it tumbles so hard and fast I keep looking for the pilot to be thrown thru the canopy! The plane points really well, and the way it point rolls looks just like the second hand on a stopwatch! I've gotten it do do a sort-of Parachute from inverted flight but its rate of fall doesnt slow but it flatens out and the rotation in the spin almost stops. It looks very cool but not very 3D like. Because of the wing loading you really need to be ahead of it mentaly all the time and its set-up and flight trimming are VERY important. Mine would roll out of a loop on the first flights. Told me that one wing was heavier than the other. Once I had that fixed the plane was perfect from there on. If you get one you'll love it but 3D with something else. Mike