I bought a basket case GP Trainer 40, all framed up, not finished or covered. I fixed building errors and hangar rash, covered it and used the old OS .40 SF to fly it. Wonderful flying plane, aerobatic capabilities, but stable enough for training. One student liked it better than his NexStar.

The fuel tank was an 8 oz unit, and I once ran 17 minutes on a tank & landed with power on. Didn't pump much out... and it was a part-throttle training flight, but you get the idea. You'll get plenty long flights with yours, even with a small tank.

Sure wish I'd paid more attention to the battery connector on that trainer....

Dave Olson