The Skybolt is a two-seat aerobatic biplane designed by Lamar Steen, an aerospace teacher in Denver. It first flew in October 1970 and received the EAA award for “Best School Project.” The Skybolt is stressed to + 12G’s and -10G’s. The wings are built around two spruce spars and are fabric covered, with four ailerons. The fuselage is a fabric-covered welded steel-tube structure. The aircraft can be fitted with engines ranging in size from 125 to 260 hp.