Product Description: Developed over a period of four years and four models, this sport scale fun flier is powered by a .25 gas engine. It has a fully symmetrical airfoil and enough sweep back, though not scale, to be fully acrobatic and a very smooth flier. This model has been flown successfully by several pilots with skill levels ranging from modest to competition level, and has an OS 25 FP power plant. Kit #403 Wing span: 46 1/2" Engine: .20 - .25 cu. in. disp. Radio control: 4 channel