"Giant 25% YAK 54 Sport 3D ARF 1.6-1.8, 81"

This is the radio controlled- glow or gas powered- Almost-Ready-to Fly-
Great Planes 1.60 25% Yak 54 1.60/43cc Sport 3D Airplane.
Fully 3-D and IMAC Capable- IMAA Legal
For Intermediate to Advanced Modeler/Fliers.

FEATURES: Construction: Balsa and plywood
Wings: two-piece- built-up- wood with aluminum joiner tube
Covering: Factory applied Top Flite MonoKote- color scheme is White -
TOPQ0204- Metallic Blue - TOPQ0402- and Metallic Red - TOPQ0405
Radio Compartment: Plywood construction
Cowling: Factory painted- fiberglass construction
Canopy: Clear canopy with factory painted Silver trim
Wheel Spats: Factory painted in Metallic Red
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)
Aileron Control: Dual servo (one servo in each wing half)
Elevator control: tail mounted dual servo control
Spinner: 4" (101mm) diameter aluminum- 2 bladed spinner
Engine Mount: Great Planes 1.20-1.80 nylon adjustable - GPMG1101
Fuel Tank: 24oz (710cc) (6x2.5x3")
Hardware: 4-40 size pushrods- heavy-duty control horns- hinge point
hinges- pull-pull system for the rudder- & 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- 4" main wheels-
1" tailwheel- adjustable engine mount- 24oz fuel tank- 4" spinner-
aluminum wing tube- hardware package and photo-illustrated manual.
For a complete list of contents see page 7 of the online manual

REQUIRES: Engine: 1.6-1.8 cu in (25-30 cc) 2 stroke - OSMG0661
OR 1.8-2.1 cu in (30-36 cc) 4 stroke
OR 1.9-2.6 cu in (32-43 cc) gasoline
Muffler: Pitts-Style (Engine mounts on its side) - BISG4116
Radio: 6-channel radio with electronic mixing recommended for
ultimate 3D flight performance
Servos: 7-standard size (2-elevator- 2-aileron- 2-rudder- 1-throttle)
with at least 98 oz-in of torque (44 oz-in is fine for the throttle)
Servo Extension 6": 2 required for forward mounted rudder servos
Servo Extension 12": 1 required for throttle servo - HCAM2711
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:    Wingspan: 81" (2057mm)
Length:   68" (1727mm)
Weight: 12.5-15.25 lbs. (5670-6917g)
Wing Area: 1138 sq. in. (73.51 sq dm)
Wing Loading: 25-30 oz/sq. ft. (76.2-91.5 g/sq dm)
Airfoil: fully symmetrical- mid wing placement
Center of Gravity: 5-1/8" (130mm) Back from the wing's leading edge
Wing Incidence: 0?
Stab Incidence: 0?
Engine Thrust: 2? right- 0? down
Control Throws-  3D Rate         High Rate          Low Rate
Elevator:   2?"  (64mm)       1?" (32mm)         7/8" (22mm)
Rudder:      4" (102mm)       2?" (64mm)           1" (25mm)
Ailerons:   2?"  (57mm)        1" (25mm)         7/8" (22mm)