That is the Mark 2 version of the Sky Sport. It is kitted by RSM. 180 sq.in. wing, AP Wasp for power, weight about 10 ounces. The kit comes complete with tank, bellcrank, horn, and wheels!
It will do a clean pattern on 48' lines with no problem. Took 1st and 2nd at this year's Knight's Joust, and 1st and 3rd at last year's Palmer Memorial. I happened to fly a Skyfire at this year's Palmer, and the other plane was a copy of my 1/2A Magician.
This one has carbon veil on the fuselage, Polyspan on the wings and silkspan covering on the tail surfaces. Painter's choice over nitrate dope. My own decals on inkjet type paper with an overcoat of clear Lustercoat.