N814SB Model: One Design  Serial# --

The DR1071 design is a single-seat acrobatic low-wing monoplane. The aircraft is welded 4130N steel-tube construction fuselage and tail surfaces of conventional design. The fuselage is covered with sheet aluminum from the firewall aft to the cockpit and is fabric covered from the cockpit aft to the tail. The streamlined glass fibre cowl is split horizontally for access. The wing is a plywood-covered, one-piece unit with a laminated spruce solid main spar and a relatively light rear spar. The wing is bolted directly to the fuselage frame truss. The ailerons are push rod operated and fitted with a mass balance along their leading edges. The ailerons have aerodynamic balance provided by aileron "spades" and an aft-set aileron hinge. The tail surfaces are extremely braced using streamlined stainless steel wires. The elevator is fitted with servo/trim-tabs and is push rod actuated. The rudder is unbalanced and is cable actuated. The cantilever sprung aluminum alloy main undercarriage is fitted with dual disk brakes. A steerable tailwheel is fitted to a cantilever steel spring. Two fuel tanks are fitted forward of the cockpit--one above the other--the lower one a collector tank with flop tube for inverted flight; the other a large capacity main tank. A Lycoming 0-360-A1A engine is fitted. A Bendix fuel injection system is fitted to the engine together with a Christen inverted oil system for sustained inverted flight. A sensenich fixed pitch propeller is fitted.