This is a full size Brodak Flying Clown, 200 square inches, as recommended for .09 through .19.
While building my racer, I decided to use some scraps to make lightweight copy for an .049. It weighs 7.7 ounces all-up (less fuel), light by my standard.
I've decided to post this under 1/2A, but I might as well have put it under OTS, Classic, modern, or profile, because I can (and probably will) enter in all those classes. I'd need a muffler for F2b.
On the first & only test flight, it easily did the OTS pattern, including an upside-right landing on some hefty turf. Lap speed is a little fast, 2.7 on 35' lines, maybe 42's next.