This is the radio controlled, glow powered, ready to cover Viper 500 Sport/Racing Airplane from Great Planes. **This Ready To Cover version requires fiberglassing the** **wing and fuselage for safety.** **If not experienced in fiberglassing, seek help from an experienced modeler.**For intermediate flyers who have mastered a trainer and some sport models.AMA legal for Quickie 500 Racing in 424 and 428 classes.FEATURES: Construction: Balsa and ply Wing: One-piece, carbon fiber reinforced wood and foam construction Aileron Control: One servo needed with at least 35 oz-in torque Fuel Tank: 6.1oz (180cc)Radio Compartment: Easily accessible under wing Landing Gear: Prebent aluminum Wheels: Two low-drag nylon, 2.5" (61mm) diameter Tail Section: Bolt-on V-tail design for accurate alignment that can be removed easily for transportation Engine Mount: Multi-fit backplate style, aluminum construction, accepts any engine in the Viper 500s recommended range Assembly Time: 6-8 hours Warranty: Great Planes Model Manufacturing Company guarantees this kit to be free from defects in both materials and workmanship at date of purchase INCLUDES: One Great Planes Viper 500 sport model airplane kit with pre-assembled wing fuselage & tail sections, pushrods, decal sheet,hardware, 2½" (61mm) plastic profile wheels, 6.1oz (180cc) fuel tank (GPMA2552), photo-illustrated instructionsREQUIRES: Engine: .25-.46 (4.1-7.5cc) 2-stroke Muffler: Stock type supplied with engine Radio: Four channel for sport flying Six channels or more for V-tail mixing Servos: Four 42 oz-in torque minimum 1-aileron, 1-elevator, 1-rudder, 1-throttle Servo Extensions: Two 12" (305mm) for throttle and aileron servos Misc. Items: Glow plug, ¼" foam rubber padding, 3' medium fuel tubing, fuel filter, propeller, building and field equipment. Fiberglassing wing and fuselage to insure safety Covering such as Top Flite MonoKote SPECS: Wingspan: 52" (1320mm) Wing Area: 504 sq in (32.5 sq dm) Weight: 3-3.4lb (1360-1530g) Wing Loading: 13.7-15.4 oz/sq ft (42-47 g/sq dm) Length: 41.25" (1048mm) Airfoil: Selig Center of Gravity: 3" (75mm) Back from the wing's leading edge at the fuselage sides. Control Throws- Low Rate High Rate Ailerons: Up & Down 1/8" (3mm) 3/8" (9.5mm) Elevator: Up & Down 1/8" (3mm) ¼" (6.35mm) Rudder: Right & Left ¼" (6.35mm) Incidences: Thrust Angle 0° Wing 0° Tail 0° COMMENTS: If a replacement fuel tank is needed, order the Sullivan 6oz Flextank (SULQ1738), or the DuBro 6oz tank (DUBQ0206). Some minor trimming and modifications may be required. updt jxs 11/16/09 BOX DIMENSIONS: 11.13" W. X 6.38" H. X 53.25" L. BOX WEIGHT: 5.22 LBS. ACCESSORIES This is the glow powered, RTC Great Planes Viper 500 Sport Racer. FEATURES: Selig airfoil, carbon fiber reinforced wood/foam wing, aluminum motor mount, single aileron servo control, nylon wheels REQUIRES: .25-.46cu in 2-stroke engine, 4-ch radio w/4 servos, glue, fiberglass cloth & related tools