RE: 15 or 25 size 4* kit?
WHY NOT REDUCE A 4* PLAN TOO 48 INCH SPAN AND BUILD YOUR OWN?
A FELLOW CLUB MEMBER DESIGNED ONE SEVERAL YEARS AGO. VERY SIMILIAR BUT NOT A COPY OF 4*. WE BUILT 3 OF THEM, NICE FLYING PLANE. IT WAS A FRED REESE SIMPLE TAYLORCRAFT WING AND A SORTA 4* FUSE . 48 INCH WING, ABOUT
54 OZ WEIGHT WITH A OS 25.