Grumman Tracker S-2
The Grumman Tracker S-2 has a 165" wingspan, is powered by Zenoah G-62's. It has all the usual stuff, retracts, flaps, powered tail skid plus it has slots and spoilers which along with the very small ailerons help turn the beast.  The plane flies somewhat like a grain truck.  I originally (1st season) had folding wings which were powered by two electric screwdriver mechanisms.  This proved to be to much maintence for me and they were removed for the second season.  Have had far fewer problems and saved about 4 lbs. in weight.