Phoenix Model Yak 55 GP/EP ARF 55.9"

Tower Stock# LW9701  •  Manufacturer Stock# PH105
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  • out of package (see larger view)
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Notes from our tech department:
This is the radio controlled, glow or electric powered, almost-ready-to-fly
1/5 scale Yak 55 .46 - .55 scale Aerobatic Airplane from Phoenix Model
Recommended for Intermediate Pilots.

FEATURES

Construction: Built-up balsa and plywood
Covering: High quality heat shrink covering, color scheme is orange
and white with blue gold accents
Wings: Two-piece wood with aluminum joiner tube
Radio Compartment: Plywood reinforced
Cowling: Painted fiberglass
Canopy: Clear with red frame lines, painted pilot bust
Wheel Pants: Painted fiberglass
Cockpit features: Detailed and painted pilot figure and instrument
panel decal
Landing gear: Pre-bent 0.14" (3.5mm) aluminum with 2-1/2" (63mm)
treaded rubber main wheels and one 1" (25mm) rubber tail wheel with
pre-bent 0.078" (2mm) thick wire
Spinner: 2.25" (58mm) plastic, red in color
Fuel Tank: 16oz (480cc) approximate
Aileron Control: Dual servo
Hardware: Hinges, wing bolts and all other required fasteners
included
Motor Mount: Plywood
Engine Mount: Two-piece nylon

INCLUDES

Prebuilt and pre-covered wings fuselage and tail section, aluminum
main landing gear, tailwheel wire, nylon adjustable engine mount,
plywood motor mount, main and tail wheels, pre-bent pushrods,
hardware package, fiberglass cowling and wheel pants, clear canopy,
pilot figure, decals, photo-illustrated instructions

REQUIREMENTS

For glow operation;
Engine: .40 - .55 cu in (6.5 - 9.01cc) 2-stroke
OR .52 cu in (8.5cc) 4-stroke
Muffler: Standard type included with engine
Servos: Five, high torque
(2-ailerons, 1-elevator, 1-rudder, 1-throttle)
Receiver Battery: 4.8-6V / 800-1200mAh NiMH and charger

For electric operation;
Brushless Motor: Great Planes Rimfire .46 42-60-800, GPMG4725
ESC: 60A
Propeller: 12x8, or 13x6.5
LiPo Battery 6S (22.2V)
Battery Charger: LiPo compatible
Servos: Four, 42 oz/in torque minimum
(2-ailerons, 1-elevator, 1-rudder)

For glow and electric power;
Radio: Four channel
Servo Extension: One 6" (152mm) for ailerons
Y-Harness: One for aileron servos
Misc. Items: Foam rubber padding, medium fuel tubing, fuel filter,
propeller, building and field equipment

SPECIFICATIONS

Wingspan: 55.91" (1420mm)
Flying Weight: 5.7 - 6.2lbs (2600 - 2800g)
Wing Loading: 21.3 oz/sq ft (65 g/sq dm)

Length: 53.94" (1370mm)
Airfoil: NACA
Center of Gravity: 4.1" (105mm) Back from the wing's leading edge
at the fuselage sides.
Control Throws- Low Rate High Rate
Ailerons: 0.31" (8mm) 10% expo 0.39" (10mm) 10% expo
Elevator: 0.31" (8mm) 12% expo 0.39" (10mm) 12% expo
Rudder: 0.98" (25mm) 15% expo 1.6" (40mm) 15% expo

COMMENTS

If a replacement fuel tank is needed, order the Sullivan 16oz flex
tank (SULQ1743), or the DuBro 16oz tank (DUBQ0216).
Some minor trimming and modifications may be required.

Replacement main wheels are not available from Phoenix Models. If
wheels are required, order the Great Planes 2.5" Ultralite Wheels,
GPMQ4203. Enlargement of axle hole may be required.

jxs 08/29/14
ir/jxs

Resources
See Tower Catalog page 32.
Know Before You Fly
Easy RC: Airplanes
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