This is the radio controlled, glow, gasoline or electric powered, almost-ready-to fly, Great Planes Sukhoi SU-31 Performace Series Scale Airplane For Intermediate to Advanced Modeler/Fliers. Fully 3D and IMACC Capatable, IMAA Legal. FEATURES: Construction: Balsa and plywood Wings: Two-piece, built-up, wood with two aluminum joiner sections and two plywood joiners Covering: Factory applied Top Flite MonoKote, color scheme is Red and White with Blue, Yellow and Metallic Charcoal accents Radio Compartment: Plywood construction Cowling: Factory painted, fiberglass construction Canopy: Clear canopy with factory painted Silver trim Wheel Pants: Factory painted, fiberglass construction Landing Gear: Pre-formed aluminum .16" (4mm) thick, White in color Wheels: Two 4" (101mm) diameter foam main wheels Tailwheel: Coiled spring wire with 1" (25mm) rubber tailwheel Rudder control: Ganged dual servo, pull-pull for glow engines or tail mounted dual servo control for gas engine (for balancing purposes) (forward mounting position recommended for electric operation) Aileron Control: Dual servo (one servo in each wing half) Elevator Control: Tail mounted dual servo control Spinner: 4" (101.6mm) diameter aluminum, 2 blade spinner with adapter nut designed to fit into tapered prop nut used on the O.S. Max 1.60 FX glow engine Engine Mount: Two-piece adjustable Fuel Tank: 25oz (739cc) suitable for glow fuel only, can be converted for gasoline usage Hardware: IMAA legal, forward (pull-pull system) or aft (pushrod system), engine mount & miscellaneous screws Building Time: Ready to fly in only 20--25 hours. Warranty: Great Planes Model Manufacturing Company guarantees this kit free from defects in both materials and workmanship at date of purchase. INCLUDES: Pre-built and covered wings, fuselage and tail assemblies, pushrods, decals, pre-bent main landing gear, tailwheel wire, 3Œ" main wheels, 1" tailwheel, adjustable engine mount, 25oz fuel tank, 4" spinner, aluminum and plywood wing joiners, hardware package and photo-illustrated manual REQUIRES: Engine: 1.6-1.8 cu in (26-30 cc) 2 stroke OR 1.8-2.1 cu in (30-34 cc) 4 stroke OR 1.9-2.6 cu in (32-43 cc) gasoline OR 63-62-250 RimFire Outrunner Brushless motor, ESC and battery Muffler: Pitts-Style (Engine mounts on its side) Radio: 4+ channel radio with electronic mixing recommended for ultimate 3D flight performance Servos: 6 high-torque (2-elevator, 2-aileron, 2-rudder) 1 standard torque for throttle (6 servos required for electric flight) Servo Extension 6": 2 required for forward mounted rudder servos Servo Extension 12": 1 required for throttle servo Servo Extension 24": 2 required for aileron servos - HCAM2721 Servo Extension 36": 2 required for elevator servos - HCAM2726 Servo Extension 36": 2 required for tail mounted rudder servos (gas) Y-Harness: qty. 2 required 1 for aileron & 1 rudder if using a radio that does not support channel mixing - HCAM2751 Y-Harness reverse type: 1 required for the elevator servo if using a radio that does not support channel mixing - FUTM4150 Misc. Items: fuel filter, propeller, building and field equipment SPECS: Center of Gravity: 5-11/16" (144mm) Back from the wing's leading edge Wing Incidence: O° Stab Incidence: O° Engine Thrust: 2.5° right, 0° right Control Throws- 3D Rate High Rate Low Rate Elevator: 3Œ" (83mm) 7/8" (22mm) œ" (13mm) Rudder: 4œ" (114mm) 2Ÿ" (70mm) 1-7/8" (48mm) Ailerons: 2-3/8" (60mm) 1" (25mm) 5/8" (16mm) COMMENTS: Following are the Top Flite MonoKote colors used on this model and order numbers for 6ft rolls; True Red TOPQ0227 Cub Yellow TOPQ0220 Metallic Blue TOPQ0402 White TOPQ0204 Metallic Charcoal TOPQ0407 Cruise through extreme 3D maneuvers! Impressive in size and looks, the Performance Series SU-31 ARF excels at demanding IMAC/IMAA competition aerobatics and traditional sport flying! Great Planes? expert engineering and construction provides the lightweight strength needed for high-stress 3D maneuvers ? and assembling the factory-built components takes as little as 20-25 hours. Whether at the local field or in competition, the SU-31 ARF performs with crowd-pleasing precision and grace. Features an ideal balance of low weight and high structural integrity. All-wood construction with painted fiberglass cowl and wheel pants. Includes complete, custom-designed hardware package. Assembling the SU-31's factory-built components takes as little as 20-25 hours ? no time at all for a model this size. Replacement parts are available so you can keep your model in peak flying form. ?The Performance Series SU-31 ARF is another powerful addition to this performance-driven line of airplanes. Whether it?s IMAC, 3D or just ?SUnday? type flying, the SU-31 is an excellent choice for a first giant-scale aerobatic model - Don Anderson The turtle deck and fuselage bottom are constructed of a precisely sculpted foam shell that's reinforced with balsa sheeting, adding strength and great looks to this stellar performer. The beautifully finished cowl, wheel pants and aluminum landing gear complete the great looks of this outstanding performer. The included high quality aluminum spinner makes this model more complete than other models of similar size. Easy to assemble, the one-piece wing bolts directly to the fuselage. This helps minimize weight by avoiding the need for the extra structure required when using an aluminum wing joiner tube. Mild or wild, the Performance Series SU-31 ARF can do it all. With maximum control surface throw, 3D performance is ready and waiting. Airfoiled tail surfaces (instead of flat surfaces offered by other large scale model manufacturers) provide excellent control response and superior aerobatic maneuvering at all speeds, and in all flight attitudes. The SU-31?s tail gangs two rudder servos in a pull/pull set-up that increases control precision. It?s one of numerous design elements that combine to give this model the ability to execute any current 3D maneuver to perfection. The included lightweight and easy to install tailwheel assembly provides positive ground handling. Simple and direct connection from the servo to the control surface provides easy set-up and precision control. Removing the canopy provides easy access to the on-board radio gear, fuel tank and the thumb screws used to secure the wing panels. From any angle, the Performance Series 1.60-43 cc SU-31 ARF will stand out, in the pits and in the air. The attractive, multi-color trim scheme is expertly applied- this scheme on the top and bottom of the aircraft leaves no doubt when it's inverted or upright. For gasoline engine power, Great Planes' gives the Fuji-Imvac? BT-43EI-2 the "thumbs up". It has been extensively tested in the SU-31 and passed with flying colors. The engine's electronic ignition system offers easy starts and reduces weight and vibration. An ideal glow engine match is the O.S.® 1.60 FX 2-stroke, which has also been successfully tested in the model. It helps maximize the SU-31's potential by keeping weight low while supplying excellent power. Wingspan: 77 in (1950 mm) Wing Area: 1155 sq in (74.5 dm²) Weight RTF: 13-15 lb (5900-6800 g) Wing Loading: 26-30 oz/sq ft (79-91 g/dm²) Fuselage Length: 70 in (1780 mm) Engine Required: 2-stroke 1.6-1.8 or 4-stroke 1.8-2.1 glow or 32-43cc gasoline engine or 63-62-250 out-runner brushless motor, ESC and battery Radio Required: 4+ channel w/1 standard and 6 high-torque servos Pilot figure shown is not included. Product Manual - Parts Listing -