GREAT PLANES Yak-55M Performance Series - User Manual

INSTRUCTION
MANUAL
Champaign, Illinois
(217) 398-8970, Ext 5
airsupport@greatplanes.com
Entire Contents © 2010 GPMA1230 Mnl
READ THROUGH THIS MANUAL BEFORE STARTING CONSTRUCTION. IT CONTAINS IMPORTANT
INSTRUCTIONS AND WARNINGS CONCERNING THE ASSEMBLY AND USE OF THIS MODEL.
WARRANTY
SPECIFICATIONS
Great Planes
®
Model Manufacturing Co. guarantees this kit to
be free from defects in both material and workmanship at the
date of purchase. This warranty does not cover any component
parts damaged by use or modification. In no case shall Great
Planes’ liability exceed the original cost of the purchased kit.
Further, Great Planes reserves the right to change or modify this
warranty without notice.
In that Great Planes has no control over the final assembly or
material used for final assembly, no liability shall be assumed nor
accepted for any damage resulting from the use by the user of
the final user-assembled product. By the act of using the
user-assembled product, the user accepts all resulting liability.
If the buyer is not prepared to accept the liability associated
with the use of this product, the buyer is advised to return
this kit immediately in new and unused condition to the
place of purchase.
To make a warranty claim send the defective part or item to
Hobby Services at the address below:
Hobby Services
3002 N. Apollo Dr. Suite 1
Champaign IL 61822 USA
Include a letter stating your name, return shipping address, as
much contact information as possible (daytime telephone
number, fax number, e-mail address), a detailed description of
the problem and a photocopy of the purchase receipt. Upon
receipt of the package the problem will be evaluated as quickly
as possible.
Wingspan: 88 in [2235mm]
Wing Area: 1473 in
2
[95 dm
2
]
Wing Loading: 28−31 oz/ft
2
[85−95 g/dm
2
]
Length: 82.5 in [2095mm]
Weight: 18−19.5 lb [8160−8840 g]
Radio: 5 channel minimum / 9 channel or greater preferred
Engine: 50-55cu in [3.0 – 3.4cc]
two-stroke gasoline engine

Summary

Safety Precautions

Radio Equipment

Minimum five-channel radio required; computer radio recommended for advanced features.

Radio Recommendations

Specific Futaba radio models suggested for optimal performance with the aircraft.

Servo Recommendations

Minimum torque ratings specified for ailerons, elevator, rudder, and throttle servos.

Battery Recommendations

Recommended minimum capacity for receiver and ignition batteries for reliable operation.

Engine Recommendations

Suggests a 50-55 cc two-stroke gasoline engine, specifically the DLE 55.

Muffler Recommendations

Additional Items Required

Required Hardware & Accessories

Lists essential hardware and accessories with order numbers for completing the kit.

Optional Supplies & Tools

Important Building Notes

Kit Inspection

Kit Contents

Ordering Replacement Parts

Preparations

Assemble the Wing

Aileron Servo Installation

Detailed steps for installing the aileron servo, including drilling, mounting, and connecting.

Pushrod Assembly and Installation

How to Solder

Assemble the Fuselage

Install the Main Landing Gear

Steps for installing the main landing gear into the fuselage, securing with screws and washers.

Install the Stabs & Elevators

Instructions for installing the horizontal stabilizers and elevators, including servo lead extensions.

Elevator Servo and Pushrod Installation

Elevator Control Horn and Pushrod Setup

Install the Stabilizer Tubes and Mount Stabs

Install the Rudder

Install the Rudder Servos

Single Servo Rudder Installation

Detailed steps for setting up and installing a single servo for rudder control linkage.

Double Servo Rudder Installation

Complete the Rudder Control Installation

Install the Engine

Mounting the Engine

Details on drilling the firewall and mounting the engine using hardware and blocks.

Throttle and Choke Servo Installation

Steps for installing servos and pushrods for throttle and choke control systems.

Pushrod and Guide Tube Installation

Install the Fuel Tank

Fuel Tank Assembly and Installation

Completing fuel tank assembly, routing lines, and securing it in the fuselage.

Install the Muffler

Pitts Style Muffler Installation

Canister Muffler Installation

Canister Holder and Tube Setup

Preparing and installing the plywood holders and silicone tubing for the canister mount.

Mounting the Canister

Steps for fitting and securing the canister into the holders and connecting the exhaust header.

Tuned Pipe Installation

Mount the Cowling and Dummy Engine

Cowling Mounting Block Installation

Gluing and preparing cowl mounting blocks on the firewall and inside the cowl.

Dummy Engine Preparation

Cutting the dummy engine for cooling airflow and preparing it for mounting in the cowl.

Install the Main & Tail Wheels

Main Landing Gear Assembly

Detailed steps for cutting axles, fitting wheel collars, and attaching wheels to the landing gear.

Tail Wheel Bracket Installation

Installing the tail wheel bracket onto the rudder using screws and CA glue.

Complete the Radio Installation

Servo;Battery Tray Construction

Assembling the plywood tray and hardwood blocks for mounting radio components.

Installing Battery and Receiver in Tray

Install the Canopy, Pilot and Instrument Panel

Canopy Hatch Attachment

Attaching the canopy hatch to the fuselage and securing it for glue drying.

Canopy Mounting and Fillet

Positioning the canopy, applying glue, and adding an epoxy fillet for a secure bond.

Apply the Decals

Get the Model Ready to Fly

Check the Control Directions

Verifying that control surfaces move in the correct direction relative to transmitter inputs.

Set the Control Throws

Adjusting control surface throws to recommended low and high rates for optimal flight.

Proper Pushrod Hookup

Acceptable Pushrod Hookup

Balance the Model (C.G.)

Balance the Model Laterally

Instructions for balancing the model laterally to ensure stable flight in loops and maneuvers.

Ground Check and Range Check

Engine Safety Precautions

Preflight

Charge the Batteries

Guidance on charging transmitter and receiver batteries for optimal performance.

AMA Safety Code Excerpts

Check List

Flying

Fuel Mixture Adjustments

Takeoff

Flight

Landing

GREAT PLANES Yak-55M Performance Series Specifications

General

Brand	GREAT PLANES
Model	Yak-55M Performance Series
Category	Toy
Language	English