Developed by Hugo Junkers, the D-1 was the world's first operational all metal fighter plane. With a top speed of 140 mph and a service ceiling of just under 20,000 feet the D-1 was decades ahead of its wood and wire, fabric covered competition. This made it arguably the Messerschmitt ME-262 of World War One! Though it arrived too late to play a significant part, the Junkers D-1 was certainly a harbinger of what "Warbirds" were to become! Upgrade To the Junkers D-1 Kit Package Type ¼ Scale German WW-I Late War Fighter Wing Span 88-1/2 Inches (17-1/2” cord) Wing Area 1507 Square Inches total. Airfoil Flat Bottom Wing Loading 35 ~ 42 Oz. / Sq. Foot Fuselage Length 63-3/4 Inches. Flying Weight 23 to 28 Pounds Engine Size Gasoline 35 ~ 62cc Prop Size Depends on engine being used Fuel Tank 16~24 Oz. (compatible with fuel requirements of engine) Radio Equipment 4-Channel W/ 5 servos min. Servo Requirements High torque 70 ~ 100 In. / Oz. std. Size High Torque Servos Wheel Size 6-5/8 vintage (Not included in kit) Engine Compartment 5.8 X 11-1/2" Scale prop 27” Model Features Balsa, Bass, and Ply construction Removable “3-piece” bolt on wing Full Flying Rudder Kit Includes Full-Size plans W/ photo instruction book. Jig & die cut parts Pre-bent wire landing gear W/Fairings Basic hardware package Pull-Pull Rudder cables Built up wooden cowl. Items Needed to Complete Control system (push rod type or pull / pull cable system suitable for a model of this size) Fuel System (fuel tank & fuel lines) compatible with the fuel requirements of engine used. 6 yards, 1/2 ounce fiberglass cloth and finishing resin 1-pair 6-5/8 Vintage wheels Notes Center of Gravity 5 Inches back from leading edge of Wing.