Mather Aerospace Modelers, Inc

This is SPAD (Simple Plastic Airplane Design) version of J3 Cub. With 86 inches wingspan the plane qualifies as Giant Scale. The power is produced by 25cc gas engine converted from Poulan Weead Whacker. The cool thing is, that the engine runs on gasoline, but uses glow plug ignition. Coro-Cub was built on 25% scaled up plans from SPAD website. The plane came up at about 15lb and with wing area of 1300sq inches makes reasonable wing loading at 26lb/sq ft. The plane flies great what you can see below.