Global Hobby Ryan STA Assembly Instruction Manual

FULL-SCALE SPECIFICATIONS:

Span: 30 ft. Length: 21 ft. 6 in. Height: 10 ft. 1 in. Weight: 1,600 lbs. loaded Engine: Menasco L-365 engine/125 hp. Maximum speed: 128 mph. Cruising speed: 118 mph. Range: 350 miles Service Ceiling: 10,000 ft.

The Ryan STA is a classic aircraft known for it great handling when modeled. The Sportsman Aviation Ryan STA ARF, finished in YPT-16 military version colors combines all the classic looks with a very easy to assemble and fly model airplane.

In full scale, it's a low-wing monoplane of mixed construction; a metal fuselage, wooden wing spars with fabric covering and external wire bracing. The Ryan STA/YPT-16 has tandem open cockpits and was used by the Army Air Corps for primary training. It was the first monoplane acquired by the Army as a primary trainer. From 1940 to 1942, the Army Air Corps bought nearly 1,200 more similar Ryan trainers as PT-20s, PT-21s, and PT-22s.

We know you'll enjoy owning and flying this historical and beautiful aircraft.

INSTRUCTIONS FOR FINAL ASSEMBLY

The Sportsman Aviation Ryan STA ARF is distributed

exclusively by Global Hobby Distributors

18480 Bandilier Circle, Fountain Valley, CA 92708

Distributors Version V1.0 February 2005

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✦IMPORTANT

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✦ The Sportsman Aviation Ryan STA ARF is not intended for inexperienced pilots. It is not a trainer. If you are not

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comfortable flying low wing sport aircraft, we strongly suggest returning the airplane (brand new, in the box with all original packaging and your dated sales receipt) to the place of purchase.

Ryan STA ARF Specifications:

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Wing Span: 57 Inches (1447mm)

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Wing Area: 488 Square Inches (31.5dm2)

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Length: 41 Inches (1041mm)

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Weight RTF: 60-68 Ounces (1700-1930gr)

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Wing Loading: 17 - 20 Ounces Per Square Foot (54 -61gr/dm2)

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Functions: Ailerons, Elevator, Rudder and Throttle

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Engine Required: .28 - .46 Two-Stroke or .52 Four-Stroke

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Radio Required: 4 Channel or More w/5 Standard Servos

Kit Product Number 127598

TABLE OF CONTENTS

Safety Warning ...................................................................................... 2

Introduction ............................................................................................ 3

Customer Service Information ..............................................................3

Section 1: Our Recommendations ....................................................... 4

Section 2: Tools and Supplies Required ............................................. 5

Section 3: A Note About Covering ....................................................... 5

Section 4: Kit Contents ........................................................................ 6

Section 5: Wing Assembly ................................................................... 7

Section 6: Stabilizer Installation......................................................... 10

Section 7: Control Surface Hinging ................................................... 13

Section 8: Tail Wheel Installation ....................................................... 15

Section 9: Landing Gear Installation ................................................. 17

Section 10: Engine Installation .......................................................... 19

Section 11: Throttle Control System Installation ............................... 20

Section 12: Fuel Tank Assembly and Installation .............................. 23

Section 13: Elevator Control System Installation .............................. 24

Section 14: Rudder Control System Installation ............................... 27

Section 15: Aileron Control System Installation ................................30

Section 16: Cowling Installation ......................................................... 32

Section 17: Wing Struts Installation ................................................... 33

Section 18: Final Assembly................................................................ 35

Section 19: Balancing the Ryan STA ARF ........................................ 37

Section 20: Control Throws ............................................................... 37

Section 21: Preflight Check and Safety............................................. 38

Section 22: Replacement Parts .........................................................38

Product Evaluation Sheet ................................................................... 39

Check out our website for more information on

this and other exciting Sportsman Aviation products!

http://www.globalhobby.com

SAFETY WARNING

This R/C airplane is not a toy! If misused or abused, it can cause serious bodily injury and/or damage to property. Fly only in open areas and preferably at a dedicated R/C flying site. We suggest having a qualified instructor carefully inspect your airplane before its first flight. Please carefully read and follow all instructions included with this airplane, your radio control system and any other components purchased separately.

FOR YOUR INFORMATION

To make your modeling experience totally enjoyable, we recommend that you get experienced, knowledgeable help with assembly and during your first flights. Your local hobby shop has information about flying clubs in your area whose membership includes qualified instructors. If there is no hobby shop in your area, we recommend that you contact the AMA at the address below. They will be able to help you locate a flying field near you.

Academy of Model Aeronautics

5151 East Memorial Drive

Muncie IN 47302-9252

(800) 435-9262

www.modelaircraft.org

OUR GUARANTEE

Sportsman Aviation guarantees this kit to be free from defects in both material and workmanship at the date of purchase. This does not cover any component parts damaged by use, misuse or modification. In no case shall Sportsman Aviation's liability exceed the original cost of the

purchased kit.

In that Sportsman Aviation has no control over the final assembly or material used for final assembly, no liability shall be assumed for any damage resulting from the use by the user of the final user-assembled product. By the act of using the final user-assembled product, the user accepts all resulting liability.

INTRODUCTION

Thank you for purchasing the Sportsman Aviation Ryan STA ARF. Before completing the final assembly of your new airplane, please carefully read through this instruction manual in its entirety. Doing so will ensure your success the first time around!

SPORTSMAN AVIATION RYAN STA ARF FEATURES

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Prebuilt from High-Quality Balsa and Light Plywood

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Precovered with Real Iron-On, Heat-Shrink Covering Material

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Scale Realism and Great Flight Characteristics

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Prebent Wire Main Landing Gear with Prepainted Semi-Scale Fairings and Steerable Tail Wheel

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Prepainted Molded Cowling, Cockpit Inserts, Fuselage Fairing and Windscreens

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Dual Aileron Servos, Pull-Pull Rudder Cables and Split Elevator Pushrod Assembly for Solid Control Response

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Includes a High-Quality Hardware Package with Adjustable Engine Mounting Beams

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Fast and Easy Assembly - Over 80 High-Resolution Digital Photos and Drawings to Guide You

This instruction manual is designed to guide you through the entire assembly process of your new airplane in the least amount of time possible. Along the way you'll learn how to properly assemble your new airplane and also learn tips that will help you in the future. We have listed some of our recommendations below. Please read through them before beginning assembly.

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Please read through each step before beginning assembly. You should find the layout very complete and straightforward. Our goal is to guide you through assembly without any of the headaches and hassles that you might expect.

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There are check boxes next to each procedure. After you complete a procedure, check off the box. This will help prevent you from losing your place.

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Cover your work table with brown paper or a soft cloth, both

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Keep a couple of small bowls or jars handy to put the small

parts in after you open the accessory bags.

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We're all excited to get a new airplane in the air, but take your time. This will ensure you build a straight, strong and great flying airplane.

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If you come across this symbol ☞, it means that this is an important point or an assembly hint.

to protect the table and to protect the parts.

CUSTOMER SERVICE INFORMATION

If you should find a part missing or damaged, or have any questions about assembly, please contact us at the address below:

In the USA:

Global Services

18480 Bandilier Circle

Fountain Valley, CA 92708

Phone: (714) 963-0329

Fax: (714) 964-6236

Email: service@globalhobby.net

CHECK IT OUT! We urge you to come check out our website at http://globalservices.globalhobby.com. There you will find public message

boards frequented by other Sportsman Aviation product owners and the our support staff. This is a great place to learn about new products, get help and suggestions for your current products or just simply hang out and chat with people that share your same interests.

To enable us to better serve your needs, please include your email address with any correspondence you send to us. Your email address will be added to our Customer Service Database so you will automatically receive free updates and tech notices for your particular product. You will also receive repair status updates (if applicable) and other important information about your product as it becomes available.

IMPORTANT INFORMATION ABOUT YOUR EMAIL ADDRESS

Global Hobby Distributors will not disclose the information it collects to outside parties. Global Hobby Distributors does not sell,

trade, or rent your personal information to others . Your privacy is important to us.

SECTION 1: OUR RECOMMENDATIONS

This section describes our recommendations to help you in deciding which types of accessories to purchase for your new Sportsman Aviation Ryan STA ARF. Please read through this entire section very carefully. We have provided you with tips

and recommendations that, if followed, will result in a great flying airplane. Failure to follow our recommendations may result in a poor flying airplane.

What Engine Should I Use?

The airplane is designed to be flown with a .28-.46 size two-stroke engine. With a powerful .28 size engine, the airplane will be

very light and fly at a slower, more scale-like speed and be able to perform basic aerobatics like its full-scale counterpart. If you use a .46 size engine, the airplane with will fly faster and have good vertical

performance, although it will be heavier and have a higher wing loading. If your flying field is at a

high altitude, we strongly suggest using an engine in the larger size range.

The engine is mounted on its side and adjustable engine mounting beams are included to mount your engine. If you're using a .28 size engine, you should be able to use your

engine's stock muffler without any problem, although you will need a muffler extension to clear the bottom of the firewall. If you're using a .40 or .46 size engine, we suggest using a Pitt's style muffler.

If you prefer to use a four-stroke engine, we recommend using a .52 size engine. This size engine will give the airplane great performance with the scale sound of a four-stroke engine. We don't suggest using a larger four-stroke engine. A larger engine may not physically fit on the firewall, nor inside the cowling.

The engine is mounted sideways and adjustable engine mounting beams are included to mount your engine. Since the muffler pipe on most four-stroke engines is adjustable, no aftermarket muffler should be necessary.

What Radio System and Servos Should I Use?

The airplane can be flown with a basic four-channel radio control system. Ideally, the transmitter should feature dual rates, servo reversing and end point adjustments. Most newer radio control systems have these features and more.

Regarding servos, you will need to use five standard with a minimum of 36oz/in of torque for the flight control surfaces and the throttle. The ailerons use separate servos, so you will need a Y-Harness to connect both aileron servos together.

What Else Do I Need?

There really isn't too much else that you'll need to finish the airplane. For more scale realism, a pilot bust would be a good choice. You'll also need typical modeling supplies, such as foam rubber to protect your receiver and battery, and fuel tubing.

Here's a List of What We Used to Finish Our Ryan STA ARF

QTY. 1 210630 Magnum XL .28ARNV Two-Stroke Engine

QTY. 1 280151 Magnum Muffler Extension

QTY. 1 608360 APC 9 x 6 Propeller

QTY. 5 444104 Cirrus CS-36 Standard Servos

QTY. 2 444713 Cirrus 12" Servo Extensions

QTY. 1 444728 Cirrus Y-Harness

QTY. 1 115559 Thunderbolt # 3 Performance Glow Plug

QTY. 1 115923 Global XX Silicone Fuel Tubing

QTY. 1 868638 Dubro 1/4" Protective Foam Rubber

QTY. 1 867903 Dubro 3/8" Heat-Shrink Tubing

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and Y-Harness are compatible with Hitec and JR radio control systems. These items are also available with connectors that are compatible with Futaba and Airtronics radio control systems.

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✦ The part number for the Cirrus Servos is compatible with all name-brand radio control systems. The Cirrus servo extensions

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SECTION 2: TOOLS AND SUPPLIES REQUIRED

The tools and supplies listed below will be necessary to finish the assembly of your new Sportsman Aviation Ryan STA ARF. We suggest having these items on hand before beginning assembly.

❑ Kwik Bond Thin C/A # 887500 ❑ Kwik Bond Thick C/A # 887510 ❑ Kwik Bond 5 Minute Epoxy # 887560 ❑ Kwik Bond 30 Minute Epoxy # 887565 ❑ Kwik Bond C/A Debonder # 887545 ❑ Pacer Formula 560 Canopy Glue # 339176 ❑ Wilhold Silicon Sealant # 335407 ❑ Pacer Z-42 Blue Threadlocker # 339162 ❑ #1 & #2 Phillips Head Screwdrivers ❑ .050, 2.5mm & 3mm Hex Wrenches ❑ Wire Cutters ❑ Needle Nose Pliers ❑ Magnum Z-Bend Pliers # 237473 ❑ Adjustable Wrench ❑ Excel Modeling Knife # 692801 ❑ Scissors ❑ Electric Drill

❑ Assorted Drill Bits ❑ Ernst Airplane Stand # 223977 ❑ Ruler ❑ Pencil ❑ Dubro T-Pins # 567677 ❑ Rotary Tool w/Cutting Disc & Sanding Drum ❑ Builder's Triangle ❑ 220 Grit Sandpaper w/Sanding Block ❑ Masking Tape ❑ Paper Towels ❑ Waxed Paper ❑ Rubbing Alcohol ❑ NHP Epoxy Mixing Sticks # 864204 ❑ NHP Epoxy Mixing Cups # 864205 ❑ Global Heat Gun # 360920 ❑ Global Heat-Sealing Iron # 360900

SECTION 3: A NOTE ABOUT COVERING

The covering material used on the Sportsman Aviation Ryan STA ARF is real iron-on, heat-shrink covering material. It is possible with heat and humidity changes that the covering on your airplane may wrinkle or sag. This trait is inherent in all types of heat-shrink material. To remove any wrinkles that might be visible you will need to use a heat-sealing covering iron.

Follow this simple procedure to remove the wrinkles:

❑ Plug in and turn on the sealing iron to the medium-high temperature setting. Allow the sealing iron to heat up for approximately

5 - 7 minutes.

❑ After the sealing iron has reached temperature, lightly apply the sealing iron to the wrinkled section of the covering. Move the

sealing iron slowly over the wrinkled section until the covering tightens and the wrinkles disappear.

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✦IMPORTANT

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it will return to its normal color.

If the color layer smears from any of the seams the temperature of the sealing iron is too hot. Turn the temperature dial down

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and wait about 5 minutes for the sealing iron to adjust to the lower temperature. You can remove any excess color streaks using a paper towel soaked with a small quantity of Acetone.

PRO TIP

for any length of time. The extreme heat could distort the molded parts and/or cause the covering material to wrinkle and possibly damage the fragile components of the radio control system.

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✦ You will notice that the color of the covering will darken when it is heated. When the covering cools back down,

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We do not suggest storing your airplane in an extremely hot environment (like the back of your car in direct sunlight)

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✦WARNING

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✦ The fiberglass cowling, plastic landing gear fairings and other assorted plastic parts on your Ryan STA ARF are

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painted. Do not use any harsh chemical cleaners, such as Acetone, to clean the painted surfaces. Use of rubbing alcohol is okay and will not damage the paint.

SECTION 4: KIT CONTENTS

We have organized the parts as they come out of the box for easier identification during assembly. Before you begin assembly, group the parts as we list them below. This will ensure that you have all of the parts before you begin assembly and it will also help you become familiar with each part.

If you find any parts missing or damaged, please contact us as soon as possible,

using the Customer Service Information on page # 3.

AIRFRAME ASSEMBLIES

❑ (1) Fuselage ❑ (1) Right Wing Panel w/Aileron ❑ (1) Left Wing Panel w/Aileron ❑ (1) Horizontal Stabilizer w/Elevator Halves ❑ (1) Vertical Stabilizer w/Rudder

LANDING GEAR ASSEMBLY

❑ (2) Prebent Landing Gear Struts ❑ (2) Molded Landing Gear Fairings ❑ (2) Main Gear Wheels ❑ (8) Landing Gear Straps ❑ (2) Wheel Collars w/Grub Screws ❑ (8) M2 x 8mm Wood Screws ❑ (16) M3 x 12mm Wood Screws

AILERON CONTROL SYSTEM

❑ (2) 3-1/4" Threaded Wires w/Z-Bends ❑ (2) Nylon Control Horns ❑ (2) Nylon Control Horn Backplates ❑ (2) Nylon Clevises ❑ (4) M2 x 25mm Machine Screws ❑ (6) C/A-Style Hinges

ELEVATOR CONTROL SYSTEM

❑ (1) Split Pushrod Assembly ❑ (2) Nylon Control Horns ❑ (2) Nylon Control Horn Backplates ❑ (2) Nylon Clevises ❑ (4) M2 x 12mm Machine Screws ❑ (6) C/A-Style Hinges

RUDDER CONTROL SYSTEM

❑ (1) Stranded Steel Pull-Pull Cable ❑ (2) Plywood Blocks ❑ (1) M4 x 50mm Threaded Rod ❑ (2) Nylon Adjustable Control Horns ❑ (4) Threaded Couplers ❑ (4) Nylon Clevises ❑ (4) Crimp Collets ❑ (2) M4 Flat Washers ❑ (2) M4 Hex Nuts ❑ (3) C/A-Style Hinges

THROTTLE CONTROL SYSTEM

❑ (1) 20" Plain Wire w/Z-Bend ❑ (1) Adjustable Pushrod Connector

TAIL WHEEL ASSEMBLY

❑ (1) Tail Wheel Bracket Assembly w/Tail Wheel & Wheel Collar ❑ (1) M2 x 30mm Metal Pin ❑ (3) M3 x 8mm Wood Screws

FUEL TANK ASSEMBLY

❑ (1) 280cc Fuel Tank ❑ (1) Nylon Fuel Tank Cap ❑ (1) Rubber Stopper ❑ (1) Nylon Stopper Backplate ❑ (1) Silicone Fuel Tubing ❑ (1) Fuel Pick-Up "Clunk" ❑ (1) Nylon Straight Fuel Pick-Up Tube ❑ (2) Nylon 90º Vent Tubes ❑ (1) M3 x 22mm Self-Tapping Screw

ENGINE MOUNT ASSEMBLY

❑ (2) Engine Mounting Beams ❑ (4) M4 x 18mm Socket-Cap Screws ❑ (4) M3 x 25mm Socket-Cap Screws ❑ (4) M4 Flat Washers ❑ (4) M3 Flat Washers ❑ (4) M3 Split Washers ❑ (4) M3 Hex Nuts

WING STRUT ASSEMBLIES

❑ (2) Wing Struts ❑ (4) Molded Wing Strut Fairings ❑ (8) M2 x 8mm Wood Screws ❑ (1) Rigging Cable

Continued On Next Page

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MISCELLANEOUS FUSELAGE PARTS

MISCELLANEOUS WING PARTS

❑ (1) Molded Cowling ❑ (1) Spinner Assembly w/Backplate & Screws ❑ (1) 10 x 6 Composite Propeller (for .40 & .46 Size Engines Only) ❑ (2) Molded Windscreens ❑ (1) Molded Fuselage Fairing ❑ (4) M3 x 10mm Flange-Head Wood Screws ❑ (1) Black Striping Tape ❑ (1) Decal Set

SECTION 5: WING ASSEMBLY

YOU'LL NEED THE FOLLOWING PARTS FROM THE KIT:

❑ (1) Right Wing Panel w/Aileron ❑ (1) Left Wing Panel w/Aileron

YOU'LL NEED THE FOLLOWING TOOLS AND SUPPLIES:

❑ Kwik Bond 30 Minute Epoxy ❑ # 1 Phillips Head Screwdriver ❑ Excel Modeling Knife ❑ Electric Drill ❑ 1/16" Drill Bit ❑ Ruler ❑ Pencil

❑ (1) Plywood Wing Joiner ❑ (1) M4 x 20mm Socket-Cap Screw ❑ (1) M4 Flat Washer

A complete replacement parts listing, along

with part numbers for ordering convenience,

can be found on page # 38.

❑ (1) Plywood Wing Joiner

❑ 220 Grit Sandpaper w/Sanding Block ❑ Masking Tape ❑ Paper Towels ❑ Rubbing Alcohol ❑ NHP Epoxy Mixing Sticks ❑ NHP Epoxy Mixing Cups ❑ Global Heat Gun

STEP 1: INSTALLING THE AILERON SERVOS

❑ Install the rubber grommets and brass collets onto one aileron servo,

making sure to install the collets with the flanges toward the bottom of the servo.

❑ Plug one 12" servo extension onto the aileron servo lead. ❑ To prevent the plugs from pulling apart during assembly, or worse,

during flight, secure the plugs together, using a short piece of 3/8" diameter heat-shrink tubing. Use a heat gun to shrink the tubing.

❑ Remove the aileron from the wing and set it aside. Discard the

temporary hinges. They won't be used.

❑ Working with one wing panel for now, pull the servo extension lead

through the wing panel, using the factory-installed length of string.

Tie the end of the string to the servo extension plug at the servo

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mounting hatch, then pull the string from the other end to guide the servo extension lead out through the top of the wing panel.

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❑ Set the servo into place, making sure that the servo output shaft is

toward the root edge of the wing panel.

❑ Install the aileron servo, making sure to drill 1/16" diameter pilot holes

for the mounting screws.

❑ Repeat the previous procedures to install the aileron servo into the second wing panel.

STEP 2: ALIGNING THE WING PANELS

❑ Using a modeling knife, cut away and remove the excess covering

material that overlaps onto the root ribs of each wing panel, leaving about 1/16" overlapped so it does not pull away.

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✦IMPORTANT

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center-section joint that you remove as much covering material from the root ribs as possible. Do not omit this procedure or the wing center-section joint may fail during flight.

❑ Use a ruler and a pencil to locate and draw a vertical centerline on

one side of the plywood wing joiner.

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✦IMPORTANT

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make sure that this "V" shape is toward the top of the wing panels. This will ensure that the wing panels fit together properly with the correct amount of dihedral.

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✦ The wing joiner is cut in the shape of a shallow "V." When you test-fit the wing joiner in the next procedure,

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❑ Test-fit the wing joiner into each wing panel. It should slide easily

into each wing panel, up to the centerline you drew.

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✦ It's very important to the integrity of the wing

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✦IMPORTANT

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tightly into the wing panels. It should actually be slightly loose. This will ensure that when you glue the wing joiner into place that epoxy can get into the joints between the wing joiner and the joiner box. This will ensure the strongest joint possible.

If the wing joiner does not fit properly, use 220 grit sandpaper

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with a sanding block to lightly sand the wing joiner, until you are satisfied with the fit.

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✦ When the wing joiner is installed, it should not fit

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❑ Carefully slide both wing panels together with the wing joiner

temporarily installed (without using glue).

❑ While holding the two wing panels together firmly, make sure that the wing panels are lined up at both the leading and trailing

edges, then look carefully at the center-section joint: the wing panels should fit together tightly with few or no gaps in the joint.

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✦IMPORTANT

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sanding block to lightly sand the edges and tips of the wing joiner, until you are satisfied with the fit. Remember, when the wing panels are pushed together, there should be few or no gaps in the center-section joint.

STEP 3: JOINING THE WING PANELS

❑ When satisfied with the fit and alignment, pull the wing panels apart and remove the wing joiner.

❑ Mix a generous amount of 30 minute epoxy. Working with only one wing panel for now, apply a thin layer of epoxy inside the wing

joiner box and to only half of the wing joiner. Make sure to cover the top and bottom, as well as the sides, and use enough epoxy to fill any gaps.

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✦ If the wing panels do not fit together properly, remove the wing joiner and use 220 grit sandpaper with a

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❑ Apply a strip of masking tape to the top and bottom edges of the root

rib on each wing panel.

The masking tape will prevent excess epoxy from getting onto the

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wing panels when you join them.

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✦WARNING

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minute epoxy. It is not strong enough. If you use 5 minute epoxy, the wing will fail during flight.

❑ Slide the wing joiner into the wing panel up to the centerline mark. Quickly remove any excess epoxy, using a paper towel and

rubbing alcohol, and allow the epoxy to set up before proceeding.

❑ After the epoxy has set up, test-fit both wing panels together again to double-check that they still fit together properly. Check the

leading and trailing edges, too. It's important that they be even with each other.

❑ Mix a generous amount of 30 minute epoxy and apply a thin layer to the exposed half of the wing joiner, the inside of the wing

joiner box in the second wing panel, and the entire surface of BOTH root ribs. Make sure to use enough epoxy to fill any gaps.

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✦IMPORTANT

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of epoxy to both root ribs and the wing joiner. Not using enough epoxy can result in wing failure during flight.

❑ Slide the two wing panels together and realign them. Quickly wipe away any excess epoxy, using a paper towel and rubbing

alcohol, and use pieces of masking tape to hold the two wing panels aligned until the epoxy fully cures.

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✦ Use only 30 or 45 minute epoxy to install the wing joiner and to join the wing panels together. Do not use 5

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✦ It is of the utmost importance to the integrity of the wing center-section joint that you apply a generous amount

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STEP 4: CHECKING THE WING CENTER-SECTION JOINT

❑ Once the epoxy has fully cured, remove the masking tape and double-check the center-section joint. If any gaps are present,

mix a small quantity of 30 minute epoxy and carefully fill any remaining gaps.

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✦IMPORTANT

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✦ Do not omit this procedure. The wing panels should fit together tightly, but it's possible to have some small gaps

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that appear after the epoxy has cured. To make the wing center-section joint as strong as possible, it's important to fill any gaps, using 30 minute epoxy.

SECTION 6: STABILIZER INSTALLATION

YOU'LL NEED THE FOLLOWING PARTS FROM THE KIT:

❑ (1) Fuselage ❑ (1) Horizontal Stabilizer w/Elevator Halves ❑ (1) Vertical Stabilizer w/Rudder

YOU'LL NEED THE FOLLOWING TOOLS AND SUPPLIES:

❑ Kwik Bond 30 Minute Epoxy ❑ 3mm Hex Wrench ❑ Excel Modeling Knife ❑ Ernst Airplane Stand ❑ Ruler ❑ Pencil ❑ Dubro T-Pins

❑ (1) M4 x 20mm Socket-Cap Screw ❑ (1) M4 Flat Washer

❑ Builder's Triangle ❑ 220 Grit Sandpaper w/Sanding Block ❑ Masking Tape ❑ Paper Towels ❑ Rubbing Alcohol ❑ NHP Epoxy Mixing Sticks ❑ NHP Epoxy Mixing Cups

STEP 1: MOUNTING THE WING

STEP 2: ALIGNING THE HORIZONTAL STABILIZER

❑ Place the wing into the wing saddle and push it forward completely,

making sure that the tab in the leading edge of the wing engages the slot in the forward bulkhead.

❑ Push the trailing edge down into place and align the hole in the wing

with the preinstalled blind nut in the wing mounting block inside the fuselage.

❑ Secure the wing into place, using one M4 x 20mm socket-cap screw

and one M4 flat washer. Be careful not to overtighten the screw. You don't want to crush the wing.

❑ Slide the horizontal stabilizer into the mounting slot and center it by

carefully measuring out from each side of the fuselage to each end of the stabilizer (at the trailing edge only for now). When the stabilizer is centered, both measurements will be equal.

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❑ When you're satisfied that the stabilizer is centered at the trailing

edge, draw a mark on each side of the stabilizer (at the trailing edge) where it meets the fuselage sides.

❑ With the marks on the stabilizer lined up with the fuselage sides, hold

only the trailing edge of the stabilizer in position, using a T-Pin.

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aligned. The trailing edge should not be allowed to move from side to side.

When both of these measurements are equal, you're assured that the stabilizer is square to the wing.

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✦ The front of the stabilizer should be able to pivot from side to side and the back should stay firmly in place and

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❑ With the wing mounted to the fuselage, use a ruler to measure the

distance between the tips of the stabilizer and the tips of the wing. Pivot the front of the stabilizer until both of these measurements are equal.

❑ When you're satisfied that the stabilizer is square to the wing, use a

pencil to draw a couple of marks on each side of the front of the stabilizer where it and the fuselage sides meet, then use a couple of T-Pins to hold the stabilizer firmly in place and aligned.

If the stabilizer is out of alignment, remove it and use 220 grit sandpaper with a sanding block to sand down the higher side of

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the stabilizer mounting slot, then reinstall the stabilizer and check the alignment once more. Repeat this procedure until you are satisfied with the alignment.

❑ With the stabilizer held firmly in place, look from the front of the

airplane at both the wing and the stabilizer. When aligned properly, the stabilizer should be parallel to the wing.

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STEP 3: MOUNTING THE HORIZONTAL STABILIZER

❑ When satisfied with the alignment, use a pencil to draw a line on

each side of the stabilizer where it meets the fuselage sides. Do this on both the top and the bottom.

❑ Remove the stabilizer from the fuselage and carefully use a modeling

knife to cut away and remove the covering material from between the lines you drew. Do this on both the top and the bottom.

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✦WARNING

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itself. Cutting down into the balsa structure could weaken the stabilizer and cause it to fail during flight.

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✦IMPORTANT

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prevent the epoxy from spreading over the entire length of one half of the stabilizer when you slide it into place.

❑ Mix and apply a generous amount of 30 minute epoxy to ONLY the top and bottom gluing surfaces of the stabilizer.

❑ Push the stabilizer into place and realign it, double-checking all of your measurements once more before the epoxy sets up.

Quickly remove any excess epoxy and use T-Pins to hold the stabilizer in place and aligned until the epoxy has fully cured.

❑ After the epoxy has fully cured, remove the masking tape and look closely at the glue joint. If there are any gaps between the

stabilizer and the fuselage, fill them using 30 minute epoxy for added strength. Again, before the epoxy sets up, remove any excess epoxy, using a paper towel and rubbing alcohol.

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✦ When cutting through the covering to remove it, cut with only enough pressure to cut through only the covering

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❑ To make it less messy during installation, apply masking tape to the

fuselage around the side of the mounting slot that the stabilizer will slide into. Apply masking tape to the top and bottom of the corresponding side of the stabilizer, too.

❑ Partially slide the stabilizer into the mounting slot.

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✦ Because the stabilizer has to slide into place through the fuselage, apply epoxy only to the stabilizer. This will

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STEP 4: ALIGNING THE VERTICAL STABILIZER

❑ Push the vertical stabilizer down into its mounting slot. To align it properly, the trailing edge of the stabilizer should be even with

the back edge of the fuselage and the stabilizer should be pushed down firmly.

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+ 28 hidden pages

Global Hobby Ryan STA Assembly Instruction Manual

Specifications and Main Features

Frequently Asked Questions

User Manual