The Great Planes Ultimate Biplane is IMAA/IMAC-legal and capable of demanding 3D maneuvers, the Ultimate Bipe 1.60 ARF offers quality construction, superb performance, and maximum assembly and flight-line convenience everything today's pilot values most.

Features:

• Construction: Balsa and plywood
• Covering: Factory applied Top Flite MonoKote, color scheme is White with Sapphire Blue, Missile Red and Metallic Gold stripes on the fuselage and wings.
• Radio Compartment: Easily accessible plywood reinforced
• Fuel Tank: 24oz (710cc) rectangular
• Cowling: Red, White and Blue painted fiberglass
• Fairings: Red fiberglass
• Interplane Struts: White covering, wood construction, threaded rod with knurled adjustment knob allow for easy installation or removal
• Wheel Pants: Red, White and Blue painted fiberglass
• Main Wheels: 3½ " (88mm) foam
• Tailwheel: 1" (25.4mm) foam
• Canopy: Clear
• Landing Gear: Fiberglass main gear with steel steerable tailwheel assembly
• Aileron Control: Two servos required per wing with minimum torque of
• 50 oz-in or 75 oz-in for extreme or 3D aerobatics
• Engine Mount: Two-piece nylon, adjustable
• Spinner: 4" (100mm) polished aluminum
• Decal Set: Peel and stick type with all external markings and cockpit gauges
• Linkage Setup: Short and direct between servos and control surfaces with external mounts to simplify set-up and adjustments
• Building Time: Ready to fly in as few as 20 hours
• Scale details: Functional flying wires
• Hardware: Full set of Great Planes heavy duty hardware included
• Warranty: Great Planes Model Manufacturing Company guarantees this kit free from defects in both materials and workmanship at date of purchase.

The parts fit, design, and wood selection of the Ultimate Biplane ARF are exceptional...and it requires only as little as 20 hours to assemble! The lightweight construction, due in part to strategic use of lightening holes, provides an excellent power-to-weight ratio for outstanding 3D performance.

Rather than using a linkage between the top and bottom wings to operate the ailerons, each of the Great Planes Ultimate Biplane ARF's four ailerons is actuated by its own servo resulting in clean, scale-like looks; fast, dependable response; and maximum maneuvering muscle.

An ideal engine match for your Great Planes Ultimate Biplane ARF is the O.S. 1.60 FX available with or without muffler. Light and strong, the airfoil-shaped, molded composite landing gear resists spreading under the model's weight. Expertly applied MonoKote covering, a factory-painted fiberglass cowl and wheel pants contribute to spectacular looks. The Great Planes Ultimate Biplane includes spinner and hardware that's custom-engineered for giant-scale.

The Ultimate Biplane ARF's unique method of wing attachment requires no special tools and eliminates the chance of losing screws. Two thumbscrews are permanently installed in the top and bottom of each strut. To secure the wing panels in place, you simply insert the strut and turn its built-in thumbscrews.

Achieving the proper tension on the flying wires is easy, because of special fittings that mount in the horizontal and vertical stabilizers. After threading the wire through the fitting, you simply tighten a set screw to lock it in place - avoiding the difficulty of cutting wire to a length that will be tight enough, but not too tight.

Requires:
Engine: 1.6 - 1.8 cu in (26 - 29cc) 2-stroke glow engine OR
1.8 - 2.1 cu in (26 - 34cc) 4-stroke glow engine OR
1.9 - 2.6 cu in (32 - 43cc) gasoline engine (vertical mount)
Muffler: Pitts style for glow engines
Radio: 4-channel minimum, 7-channel or greater computer radio with mixing capabilites (preferred)
Receiver Battery Pack: 1000mAh (minimum)
Servos: 7-8 For IMAC flying use:
Ailerons: 4 servos at 98 oz-in torque
Elevator: 2 servos at 98 oz-in torque
Rudder:   1 servo at 100 oz-in torque or 2 @ 50 oz-in torque
Throttle: 1 servo at 30 oz-in torque
For Extreme 3D Flying use:
Ailerons: 4 servos at 98 oz-in torque
Elevator: 2 servos at 98 oz-in torque
Rudder:   1 servo at 130 oz-in torque or 2 at 70 oz-in torque
Throttle: 1 servo at 30 oz-in torque
Servo Extension 24": 2 or 4  (rudder, elevator)
Servo Extension 12": 4   (ailerons)
Y-Harness: 2-for aileron servos
Misc. Items: fuel tubing, fuel filter, propeller, building and field equipment.

Wingspan: 65" (1650mm)
Wing Area: 1446 sq in (93m2)
Weight: 12.5-13.5lb (5440-6120g)
Wing Loading: 10-22 oz/sq ft (58-67 g/dm2)
Length: 72" (1830mm)
Airfoil: Symmetrical
Center of Gravity: 6-3/8" (161mm) Back from the leading edge of the center section of the top wing

Control Throws
Low Rate
Ailerons: Up & Down    3/4" (19mm)
Elevator: Up & Down  7/8" (22mm)
Rudder: Right & Left   2" (51mm)

High Rate
Ailerons: Up & Down 1"  (25mm)
Elevator: Up & Down 1-1/2"  (38mm)
Rudder: Right & Left 3"  (76mm)

3D Rate
Ailerons: Up & Down 1-3/8"  (35mm)
Elevator: Up & Down 2-3/4"  (70mm)
Rudder: Right & Left 5" (127mm)