Hey, for all those out there slamming me. Look at the Official Hangar 9 Catalog. What does it read, "Recommended Engines .32-.48 2-stroke. 40-.82 4-stroke." The FA-82a is in the recommended range, and is more powerful than the FA-65 and 72, yet is lighter than the two. If you want the plane to be a slow flier, then put a low end engine in it, like the Saito FA-40, or other similar O.S., Enya, etc. If I can remember correctly, skorman wanted to put a 72 on it, which is on the high side. As common sense would say, the 72 is heavier than the 82, while the 82 is more powerful. I thought the main objective for R/C airplanes was as light as possible for the equipment in the way you want the aircraft to preform?