This is the radio controlled, glow, gasoline or electric powered, ARF, Great Planes Extra 330S 3D Performance Series 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 aluminum joiner tube, short aileron linkages for smooth accurate control Covering: Factory applied Top Flite MonoKote, color scheme is Radio Compartment: Plywood construction, accesible under canopy Cowling: Factory painted, fiberglass construction Canopy: Clear Wheel Pants: Factory painted, fiberglass construction Landing Gear: Painted fiberglass Wheels: Two " ( mm) diameter foam main wheels Tailwheel: Prebent wire wire with " ( mm) 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: " (--mm) 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: --oz (---cc) 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 20-24 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, --" main wheels, --" tailwheel, adjustable engine mount, --oz fuel tank, -" spinner, aluminum wing joiner, hardware package and photo-illustrated manual REQUIRES: Engine: 1.50-1.80 cu in (25-29 cc) 2 stroke OR 1.80-2.10 cu in (30-34 cc) 4 stroke OR 1.90-2.60 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: At least 4 channel radio with electronic mixing recommended for ultimate 3D flight performance Receiver Battery: At least 1500mAh capacity Servos: 6 high-torque (2-elevator, 2-aileron, 2-rudder) 1 standard torque for throttle (6 servos required for electric flight) Servo Extension 24": 4, 2 required for aileron servos, and 2 for elevator servos - HCAM2721 if mounting receiver in aft radio tray OR 2 36" [914mm] servo extensions for the elevators if mounting receiver in the forward radio tray (HCAM2726) 2 more 24" [610mm] servo extensions for rudder servos if mounting in them in the aft location under the horizontal stabilizer and using the aft radio tray (HCAM2721) OR 2 36" [914mm] servo extensions for rudder servos if mounting them in the aft location under the horizontal stabilizer and using the forward radio tray (HCAM272) 2 Dual servo connectors such as Futaba Dual Servo Extension Extension Futaba J (FUTM4130) for rudder and servos Building and field equipment SPECS: Wingspan: 79.5" (2025mm) Length: 78" (1980mm) Weight: 13.5 - 15.5lbs (6125-7030g) Wing Area: 1209 sq. in. (77.9 sq dm) Wing Loading: 26-29 oz/sq. ft. (79-90 g/sq dm) Airfoil: , mid wing placement Center of Gravity: 5-1/4" (133mm) Back from the wing's leading edge Wing Incidence: Stab Incidence: Engine Thrust: Control Throws- 3D Rate High Rate Low Rate Elevator: 2" (50mm) 1" (25mm) 5/8" (16mm) Rudder: 6" (150mm) 4-1/2" (115mm) 3" (76mm) Ailerons: 1-1/2" (38mm) 1-1/4" (32mm) 3/4" (19mm)