Sportsman Aviation Excelleron 90 User manual

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Specifications:
●Wing Span: 66.5 Inches
●Wing Area: 865 Square Inches
●Length: 67.5 Inches
●Weight RTF: 8 - 8.5 Pounds
●Wing Loading: 20 - 22 Ounces Per Square Foot
●Functions: Ailerons, Elevator, Rudder & Throttle
●Engine Required: .91 - 1.10 Two-Stroke
.91 - 1.20 Four-Stroke
●Radio Required: 4Ch or More w/5 Ball Bearing Servos
INSTRUCTIONS FOR FINAL ASSEMBLY
The Sportsman Aviation Excelleron 90 ARF is distributed
exclusively by Global Hobby Distributors
18480 Bandilier Circle, Fountain Valley, CA 92708
All contents copyright © 2004, Global Hobby
Distributors Version V1.0b February 2004
Kit Product Number 127565
✦✦
✦✦
✦IMPORTANT✦✦
✦✦
✦The Sportsman Aviation Excelleron 90 ARF is not intended for inexperienced pilots. It is in no way a
trainer. If you are not comfortable flying aerobatic aircraft, we strongly suggest returning the Excelleron 90 ARF (brand
new, in the box with all original packaging and your dated sales receipt) to the place of purchase.
The Excelleron 90 ARF Requires the Use of High-Torque
Servos. Please See Page # 4 For More Information.

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TABLE OF CONTENTS
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.
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.
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
[phone]
www.modelaircraft.org
SAFETY WARNING
Safety Warning ........................................................................... 2
Introduction ................................................................................. 3
Section 1: Our Recommendations ............................................ 4
Section 2: Tools and Supplies Required .................................. 5
Section 3: Kit Contents ............................................................. 5
Section 4: Replacement Parts .................................................. 7
Section 5: A Note About Covering Material .............................. 7
Section 6: Wing Assembly ........................................................ 8
Section 7: Belly Pan Installation ............................................. 12
Section 8: Stabilizer Installation .............................................. 14
Section 9: Main Landing Gear Installation ............................. 19
Section 10: Engine Installation ............................................... 20
Section 11: Throttle Control System Installation .................... 21
Section 12: Elevator Control System Installation ................... 24
Section 13: Rudder Control System Installation .................... 27
Section 14: Aileron Control System Installation ..................... 29
Section 15: Fuel Tank Assembly & Installation ...................... 31
Section 16: Cowling & Canopy Installation ............................ 33
Section 17: Final Assembly ..................................................... 35
Section 18: Balancing the Excelleron 90 ARF ....................... 36
Section 19: Lateral Balancing the Excelleron 90 ARF ........... 36
Section 20: Aircraft Setup Information .................................... 37
Section 21: Control Throws ..................................................... 38
Section 22: Computer Radio Setup ........................................ 39
Section 23: Preflight Check & Safety ..................................... 40
Section 24: Excelleron 90 ARF Flight-Trimming Chart .......... 41
Product Evaluation Sheet ........................................................ 43

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Thank you for purchasing the Sportsman Aviation Excelleron 90 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 EXCELLERON 90 ARF FEATURES
●Precision-Built, CAD-Designed Airframe for Light Weight and Great Flight Characteristics
●Real Iron-On Heat-Shrink Covering Material, High-Definition Color Scheme
●Durable, Lightweight Aluminum Main Landing Gear Bracket and Tail Wheel Assembly
●Prepainted Fiberglass Cowling, Wheel Pants and Clear Molded Canopy
●Soft-Mount Engine Mounting System
●Includes High-Quality Hardware - Fuel Tank, Pushrods, Engine Mount, Wheels, Etc.
●Fast and Easy Assembly - Over 60 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.
●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.
●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.
●Cover your work table with brown paper or a soft cloth,
both to protect the table and to protect the parts.
●Keep a couple of small bowls or jars handy to put the
small parts in after you open the accessory bags.
●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.
●If you come across this symbol ☞, it means that this is
an important point or an assembly hint.
If you should find a part missing or damaged, or have any questions about assembly,
please contact us at the address below:
Global Services
18480 Bandilier Circle
Fountain Valley CA 92708
Phone: [phone] Fax: [phone] Email: [e-mail]
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
INTRODUCTION
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 ARF product owners and the Sportsman Aviation ARF support staff. This
is a great place to learn about new Sportsman Aviation ARF products, get help and suggestions for your current Sportsman Aviation
ARF products or just simply hang out and chat with people that share your same interests.
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.

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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 Excelleron 90 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 Excelleron 90 ARF will fly well with a variety of different engines. The airplane is designed to be flown with .91 - 1.10
size two-stroke engines or .91 - 1.20 size four-stroke engines. Engines in the lower end of the size range will fly the
airplane adequately, but the airplane really does perform best with engines in the higher end of the size range. Whether
you're using a two-stroke or four-stroke engine, your engine's stock muffler should fit without modification. The airplane
does include a soft-mount system that is designed to be used with .91 size engines. If you decide to use a 1.10 - 1.20
size engine, we suggest purchasing a stronger soft-mount system designed for 1.20 size beam-mounted engines. The
Dave Brown VibraDamp soft-mount system is suggested.
What Radio System and Servos Should I Use?
To get the most out of the Excelleron 90 ARF, we suggest using a four or more channel computer radio system with mixing
capabilities. Since there are two separate aileron servos used, they can be plugged separately into the receiver, allowing
you the capability of flaperon and spoileron mixing, differential mixing and flaperon/spoileron to elevator mixing. The
Excelleron 90 ARF is a big airplane with large control surfaces, so using high-torque ball bearing servos is a must. For
crisp, positive control, we suggest using high-quality, dual ball bearing servos with a minimum of 65oz/in of torque on the
flight control surfaces. For throttle control, a standard ball bearing servo can be used.
✦✦
✦✦
✦IMPORTANT✦✦
✦✦
✦Although you would lose mixing capabilities, the airplane can be flown using a basic four-channel radio
control system. If you do this, you will need to use a servo Y-Harness to join the two aileron servos together.
What Else Do I Need?
The Excelleron 90 ARF includes most of the hardware you'll need to finish the airplane. You will need to purchase
separately a spinner, remote fueling valve, two servo extension leads and some basic building materials, such as
adhesives, protective foam rubber for your radio equipment and fuel tubing. We've provided a list below of the items we
used on the airplane shown in this instruction manual.
Here's a List of What We Used to Finish Our Excelleron 90 ARF:
QTY. 1 210970 Magnum XL .91RFS Four-Stroke Engine
QTY. 1 237155 Magnum 2-3/4" Chrome Spinner*
QTY. 1 609560 APC 14 x 6 Composite Propeller
QTY. 4 759394 Hitec HS-605BB High-Torque Servos
QTY. 1 444104 Cirrus CS-36 Standard Servo
QTY. 2 444713 Cirrus 12" Servo Extensions
QTY. 1 115490 Thunderbolt Four-Stroke Glow Plug
QTY. 1 237500 Magnum Fueling Valve
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
QTY. 1 592642 Williams Bros. 1/6 Scale Sportsman Pilot (Optional)**
✦✦
✦✦
✦IMPORTANT✦✦
✦✦
✦The part number for the Cirrus servo is compatible with all name-brand radio control systems. This servo uses a
universal connector. The part number for the Hitec servos and the Cirrus servo extensions 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.
*Includes 5/16 - 24 shaft adapter with 5mm
socket-cap retaining screw.
**If you purchase the optional pilot, you will also
need various colors of enamel paint and a small
paint brush to paint the pilot.
If you use a basic four-channel radio control
system, you will also need to purchase separately
one Cirrus Y-Harness (P/N 444728) to join the two
aileron servos.

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❑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
❑Lightweight Oil or Petroleum Jelly
❑# 0, # 1 & # 2 Phillips Head Screwdrivers
❑2.5mm & 3mm Hex Wrenches
❑Adjustable Open-End Wrenches (2)
❑Wire Cutters
❑Needle Nose Pliers
❑Excel Modeling Knife # 692801
❑Scissors
❑Electric Drill
❑Assorted Drill Bits
❑Dubro T-Pins # 567685
❑Ernst Airplane Stand # 223977
❑Rotary Tool w/Cutting Disc & Sanding Drum
❑Ruler
❑Pencil
❑Builder's Triangle
❑220 Grit Sandpaper w/Sanding Block
❑Masking Tape
❑Waxed Paper
❑Paper Towels
❑Rubbing Alcohol
❑NHP Epoxy Mixing Sticks # 864204
❑NHP Epoxy Mixing Cups # 864205
❑Global Heat Gun # 360920 (Optional)
SECTION 2: TOOLS AND SUPPLIES REQUIRED
The tools and supplies listed below will be necessary to finish the assembly of your Sportsman Aviation Excelleron 90 ARF.
We suggest having these items on hand before beginning assembly.
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.
Global Services
18480 Bandilier Circle
Fountain Valley CA 92708
Phone: [phone] Fax: [phone] Email: [e-mail]
On the Web
http://globalservices.globalhobby.com
If you find any parts missing or damaged, please contact us at:
SECTION 3: KIT CONTENTS
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
❑(1) Prebent Aluminum Main Gear Strut
❑(2) Fiberglass Wheel Pants
❑(2) Main Gear Wheels
❑(2) M5 x 35mm Threaded Axles
❑(2) M5 Hex Nuts
❑(4) M3 x 12mm Machine Screws
❑(4) M3 Flat Washers
❑(2) Wheel Collars w/Grub Screws
❑(2) M2 x 8mm Flange-Head Wood Screws
MAIN LANDING GEAR ASSEMBLY
THROTTLE CONTROL SYSTEM
❑(1) 26-3/4" Pushrod Wire w/Z-Bend
❑(1) 17-3/4" Nylon Pushrod Housing
❑(1) Servo Connector w/Grub Screw, C-Clip & Washers
Continued On Next Page
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KIT CONTENTS, CONTINUED....
AILERON CONTROL SYSTEM
❑(2) 7-1/2" Threaded Wires
❑(2) Threaded Nylon Control Horn Mounts
❑(2) Nylon Control Horn Backplates
❑(2) Nylon Adjustable Control Horns
❑(6) M2 x 25mm Machine Screws
❑(2) Nylon Clevises w/Steel Pins
❑(2) Nylon Snap Links
❑(8) Steel-Pinned Hinges
❑(1) 420cc Fuel Tank
❑(1) Large Diameter Metal Plate
❑(1) Small Diameter Metal Plate
❑(1) Rubber Stopper
❑(1) Fuel Pick-Up "Clunk"
❑(1) M3 x 18mm Machine Screw
❑(1) Silicone Fuel Tubing
❑(3) Aluminum Tubing
FUEL TANK ASSEMBLY
ELEVATOR CONTROL SYSTEM
❑(2) Stranded Steel Cables
❑(4) Threaded Nylon Control Horn Mounts
❑(4) Nylon Adjustable Control Horns
❑(6) M2 x 32mm Machine Screws
❑(6) M2 Hex Nuts
❑(4) Threaded Couplers
❑(2) Z-Bend Couplers
❑(6) Flanged Crimp Collets
❑(4) Nylon Clevises w/Steel Pins
❑(6) Steel-Pinned Hinges
TAIL WHEEL ASSEMBLY
❑(1) Tail Wheel Wire w/Tail Wheel
❑(1) Aluminum Tail Wheel Bracket
❑(1) Wheel Collar w/Grub Screw
❑(2) M2 x 8mm Flange-Head Wood Screws
RUDDER CONTROL SYSTEM
❑(1) Stranded Steel Cable
❑(2) Threaded Nylon Control Horn Mounts
❑(2) Nylon Adjustable Control Horns
❑(3) M2 x 32mm Machine Screws
❑(3) M2 Hex Nuts
❑(2) Threaded Couplers
❑(2) Z-Bend Couplers
❑(4) Flanged Crimp Collets
❑(2) Nylon Clevises w/Steel Pins
❑(3) Steel-Pinned Hinges
❑(1) Fiberglass Cowling
❑(1) Clear Canopy
❑(1) Plywood Servo Tray
❑(1) Precovered Fuselage Tail Fairing
❑(8) M2 x 8mm Flange-Head Wood Screws
❑(2) Heat-Shrink Tubing (1/4" Diameter)
❑(1) 1.5mm Hex Wrench
❑(2) Nylon Fuel Line Plugs (Optional)
❑(1) Decal Set
MISCELLANEOUS FUSELAGE PARTS
❑(1) Belly Pan
❑(2) Molded Aileron Servo Fairings
❑(1) Hardwood Wing Joiner
❑(1) Plywood Wing-Screw Doubler
❑(2) M4 x 40mm Socket-Cap Screws
❑(2) M4 Flat Washers
❑(2) 4mm Rubber Grommets
❑(8) M2 x 6mm Wood Screws
MISCELLANEOUS WING PARTS
❑(4) Rubber Isolation Mounts
❑(4) Predrilled Aluminum Plates w/Threaded Holes
❑(4) Predrilled Aluminum Plates w/Plain Holes
❑(4) M4 x 12mm Socket-Cap Screws
❑(4) M4 Flat Washers
❑(8) M3 x 18mm Socket-Cap Screws
❑(4) M4 x 30mm Wood Screws
❑(4) M4 Flat Washers
ENGINE MOUNT ASSEMBLY

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We stock a complete line of replacement parts for your Sportsman Aviation Excelleron 90 ARF. Listed below are the
replacement parts that are available along with their respective part numbers for easy ordering convenience. We suggest
ordering directly from your local dealer. If your dealer does not stock Sportsman Aviation products, you can order directly
from us at the address shown below:
Global Services
18480 Bandilier Circle
Fountain Valley CA 92708
Phone: [phone] Fax: [phone]
SECTION 4: REPLACEMENT PARTS
On the Web
http://globalservices.globalhobby.com
Excelleron 90 ARF - Complete............................... 127565
Instruction Manual ................................................. 170204
Wing Set ................................................................ 170205
Fuselage Set .......................................................... 170208
Stabilizer Set .......................................................... 170209
Fiberglass Cowling ................................................ 170214
Belly Pan ................................................................ 170180
Aluminum Landing Gear Strut ............................... 170181
Fiberglass Wheel Pants .......................................... 170182
Clear Molded Canopy ............................................. 170183
Fuel Tank Set (420cc).............................................170184
Soft-Mount Engine Mount Assembly ...................... 170185
Hardware Set .......................................................... 170186
Tail Wheel Assembly ............................................... 170187
Decal Set ................................................................ 170179
SECTION 5: A NOTE ABOUT COVERING MATERIAL
The covering material used on the Sportsman Aviation Excelleron 90 ARF is real iron-on, heat-shrink covering material,
not cheap "shelf paper." Because of this, it is possible with heat and humidity changes that the covering material on
your airplane may wrinkle or sag. This trait is inherent in all types of heat-shrink covering material. To remove any
wrinkles that might be visible you will need to purchase, or borrow from a fellow modeler, a heat iron. If you need to
purchase one, the Global Heat Sealing Iron # 360900 is recommended.
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.
✦✦
✦✦
✦IMPORTANT✦✦
✦✦
✦You will notice that the color of the covering will darken when it is heated. When the covering cools
back down, 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 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.
We do not suggest storing your airplane in an extremely hot environment (like the back of your car in direct
sunlight) for any length of time. The extreme heat could cause the covering material to wrinkle or sag and possibly
damage the canopy and/or the fragile components of your radio control system.
PRO TIP

8
❑Carefully remove the aileron and four hinges from one
wing panel.
❑Using 220 grit sandpaper with a sanding block, lightly sand
both sides of the mounting tabs on each of the four hinges, to
roughen the smooth metal surfaces.
✦✦
✦✦
✦IMPORTANT✦✦
✦✦
✦You must roughen the metal so that the
epoxy will stick to it. If you don't roughen the metal, the
hinge(s) may pull out during flight.
❑Slide each of the hinges into the aileron and center them in
the middle of the hinge slots.
❑Using a modeling knife, carefully cut a shallow bevel in the
aileron directly above and below each hinge. The bevel should
be deep enough so that when you push the hinge in further,
the pivot point of the hinge will be flush with the leading edge
of the aileron. This will ensure that there will be little to no
hinge gap when the aileron is hinged into place.
❑When satisfied with the fit and alignment, remove the hinges and carefully apply a thin coating of lightweight oil or
petroleum jelly to only the pivot point of each hinge.
✦✦
✦✦
✦IMPORTANT✦✦
✦✦
✦Do not omit this procedure. Applying lightweight oil or petroleum jelly to the pivot point will prevent the
hinges from being glued solid when you install them.
❑Kwik Bond 5 Minute Epoxy
❑Kwik Bond 30 Minute Epoxy
❑Lightweight Oil or Petroleum Jelly
❑# 1 Phillips Head Screwdriver
❑Excel Modeling Knife
❑Electric Drill
❑1/16" Drill Bit
❑Ruler
❑(1) Right Wing Panel w/Aileron
❑(1) Left Wing Panel w/Aileron
❑(8) Steel-Pinned Hinges
❑(2) Molded Aileron Servo Fairings
❑(1) Hardwood Wing Joiner
❑(8) M2 x 6mm Wood Screws
❑Pencil
❑220 Grit Sandpaper w/Sanding Block
❑Masking Tape
❑Paper Towels
❑Rubbing Alcohol
❑NHP Epoxy Mixing Sticks
❑NHP Epoxy Mixing Cups
❑Global Heat Gun (Optional)
YOU'LL NEED THE FOLLOWING PARTS FROM THE KIT:
YOU'LL NEED THE FOLLOWING TOOLS AND SUPPLIES:
SECTION 6: WING ASSEMBLY
STEP 1: HINGING THE AILERONS
✦✦
✦✦
✦IMPORTANT✦✦
✦✦
✦The hinges are NOT glued into place from the factory. For flutter-free control surfaces, it is imperative
that the hinges be glued in properly. This is achieved by having a tight hinge gap and using plenty of epoxy glue. Poor
hinge installation can lead to control surface flutter which can result in a catastrophic failure of the airframe.
Continued On Next Page
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9
❑Mix a small quantity of 5 minute epoxy and carefully glue each of the four hinges into only the aileron for now. Make
sure that the hinges' pivot point is straight and flush with the leading edge of the aileron, then remove any excess epoxy,
using a paper towel and rubbing alcohol. Allow the epoxy to set up for about 10 minutes before proceeding.
❑After the epoxy has set up, apply another coating of
lightweight oil or petroleum jelly to each hinge pivot point, then
hinge the aileron to the wing, using 5 minute epoxy, making
sure that the leading edge of the aileron is pushed firmly up
against the trailing edge of the wing panel, and that the ends of
the aileron don't rub against the wing. There should be no
more than a 1/32" wide hinge gap to reduce the possibility of
flutter. Remove any excess epoxy, using a paper towel and
rubbing alcohol, and allow the epoxy to set up before proceeding.
❑After the epoxy sets up, pivot the aileron up and down several times to free up the hinges. If you notice any excess
dried epoxy on any hinge pivot point, it can be removed by carefully using the tip of a modeling knife to cut it away.
❑Repeat the previous procedures to hinge the aileron to the other wing panel, then pull firmly on each aileron to
double-check that all of the hinges hold solidly.
❑Plug one 12" aileron servo extension onto each of your
aileron servo leads.
❑To prevent the servo leads from pulling apart during
assembly, or worse, during flight, secure the plugs together
using a short piece of 3/8" diameter heat-shrink tubing (not
included).
☞If you don't want to use heat-shrink tubing, wrapping the
plugs with masking tape works well, too.
❑Install the rubber grommets and brass collets onto your two aileron servos, making sure to install the collets with the
flanges toward the bottom of the servos.
❑Working with one wing panel for now, use a modeling knife to cut away and remove the covering material from over the
precut servo mounting hole in the bottom of the wing and from the precut servo extension exit hole in the top of the wing.
The servo mounting hole is located 14-1/4" out from the root rib and 5-3/4" in front of the aileron hinge line. The servo
extension exit hole is located 1" out from the root rib and 7-7/8" in front of the trailing edge.
❑Install the aileron servo onto the plywood servo mounting
rails, making sure to first pull the aileron servo extension lead
through the wing and out the exit hole in the top of the wing,
using the length of string that's been preinstalled in the wing.
✦✦
✦✦
✦IMPORTANT✦✦
✦✦
✦When installed, the servo output shaft
should be toward the trailing edge of the wing.
☞Drill 1/16" diameter pilot holes for the servo mounting screws.
STEP 2: INSTALLING THE AILERON SERVOS
Continued On Next Page
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10
❑After installing the aileron servo, position one molded servo
fairing over the servo, making sure that the predrilled hole in
the servo fairing is centered over the servo output shaft. When
satisfied with the alignment, hold the servo fairing in place,
using a couple of pieces of masking tape.
❑Carefully drill four 1/16" diameter pilot holes through the
servo fairing and into the wing, using the molded dimples on
the servo fairing as a guide.
❑Secure the servo fairing to the wing, using four M2 x 6mm
wood screws.
❑Repeat the previous procedures to install the second aileron servo and molded servo fairing to the other wing panel.
STEP 3: JOINING 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.
✦✦
✦✦
✦IMPORTANT✦✦
✦✦
✦It's very important to the integrity of the
wing 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 each side of the hardwood wing joiner.
✦✦
✦✦
✦IMPORTANT✦✦
✦✦
✦The top of the wing joiner is straight and
the bottom is cut in the shape of a shallow "V." When you
test-fit the wing joiner in the next procedure, make sure that
the top of the joiner (the straight side) is toward the TOP of
the wing panels.
❑Test-fit the wing joiner into each wing panel. It should slide
easily into each wing panel up to the centerline you drew.
✦✦
✦✦
✦IMPORTANT✦✦
✦✦
✦When the wing joiner is installed, it should
not fit 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 wing joiner box.
☞If the wing joiner does not fit properly, use 220 grit
sandpaper with a sanding block to lightly sand the edges and
tips of the wing joiner, until you are satisfied with the fit.
❑Slide both wing panels together with the wing joiner temporarily installed (without using glue).
Continued On Next Page
☛☛
☛☛
☛

11
❑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.
❑While holding the two wing panels together firmly, make sure that both 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.
☞If the wing panels do not fit together properly, remove the wing joiner and use 220 grit sandpaper with a sanding
block to lightly sand the edges and tips of the wing joiner, until you are satisfied with the fit.
❑When satisfied with the fit and alignment, pull the wing
panels apart and remove the wing joiner.
❑Apply a long 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 wing panels when you join them.
❑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.
✦✦
✦✦
✦WARNING✦✦
✦✦
✦Use only 30 or 45 minute epoxy to install the wing joiner and to join the wing panels together. Do not
use 5 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 its centerline, making sure that the top of the wing joiner is toward the
top of the wing panel. Quickly remove any excess epoxy, using a paper towel and rubbing alcohol, and allow the epoxy
to set up before proceeding.
❑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 - don't skimp.
✦✦
✦✦
✦IMPORTANT✦✦
✦✦
✦It is of the utmost importance to the integrity of the wing center-section joint that you apply a generous
amount 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 again 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.
✦✦
✦✦
✦IMPORTANT✦✦
✦✦
✦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. Quickly remove
any excess epoxy, using a paper towel and rubbing alcohol, and allow the epoxy to thoroughly cure.

12
❑Using a modeling knife, cut away and remove the covering material from over the top and bottom of the two predrilled
wing-screw mounting holes in the wing. One hole is located in each wing panel, 1" out from the centerline and 1" in front
of the trailing edge.
❑Place the wing into the wing saddle, push it forward completely, then push the trailing edge down into place.
☞Two holes have been predrilled in the forward bulkhead to accept the wing hold-down dowels in the leading edge
of the wing.
❑Wilhold Silicon Sealant
❑3mm Hex Wrench
❑Excel Modeling Knife
❑Ernst Airplane Stand
❑(1) Fuselage
❑(1) Belly Pan
❑(1) Plywood Wing-Screw Doubler
❑(2) M4 x 40mm Socket-Cap Screws
❑(2) M4 Flat Washers
❑(2) 4mm Rubber Grommets
❑220 Grit Sandpaper w/Sanding Block
❑Masking Tape
❑Waxed Paper
❑Paper Towels
YOU'LL NEED THE FOLLOWING PARTS FROM THE KIT:
YOU'LL NEED THE FOLLOWING TOOLS AND SUPPLIES:
SECTION 7: BELLY PAN INSTALLATION
STEP 1: MOUNTING THE WING
❑Align the holes in the wing with the preinstalled blind nuts in
the wing mounting block inside the fuselage.
❑Secure the wing into place, using the plywood wing-screw
doubler, two M4 x 40mm socket-cap screws and two M4 flat
washers.
☞Two 4mm rubber grommets have been included to
conveniently keep the wing-mounting screws from falling out
when you take off the wing. The next time you take off the
wing, simply slide the grommets over the end of the screws, from
the top of the wing.
STEP 2: ALIGNING THE BELLY PAN
❑Using a modeling knife, cut away and remove the covering material from over the two precut wing-screw access holes
in the bottom of the belly pan.
❑Using a modeling knife, carefully cut out the back of the
belly pan, as shown.
✦✦
✦✦
✦IMPORTANT✦✦
✦✦
✦Cutting out the back of the belly pan will
allow you to retrieve the wing screws and washers should
they ever fall loose into the belly pan after it's glued to
the wing.
Continued On Next Page
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☛☛
☛

13
❑With the wing installed onto the fuselage, position the belly
pan onto the wing. When lined up properly, the sides and
bottom of the belly pan should be even with the sides and
bottom of the fuselage, and there should be few or no gaps
between the base of the belly pan and the wing.
☞So that the cowling will fit flush with the bottom of the belly
pan when it's installed later, the front of the belly pan will be
1/16" taller than the forward bulkhead. This is normal.
✦✦
✦✦
✦IMPORTANT✦✦
✦✦
✦So that the wing can be installed and removed, there should be about a 1/16" wide gap between the
fuselage and the front and back of the belly pan.
If there are gaps between the base of the belly pan and the wing, use 220 grit sandpaper to sand away some material
from the base of the belly pan. Remove small amounts of material at a time and recheck the fit often until you are
satisfied with the fit.
❑Remove the wing, lay a long piece of waxed paper over the wing saddle, then reinstall the wing, making sure that the
ends of the waxed paper are covering the joints between the fuselage and the leading and trailing edges of the wing.
✦✦
✦✦
✦IMPORTANT✦✦
✦✦
✦It's important to use waxed paper or plastic wrap when you glue the belly pan to the wing. The waxed
paper will ensure that you don't accidentally glue the wing to the fuselage when you glue the belly pan into place.
STEP 3: INSTALLING THE BELLY PAN
❑Apply a generous bead of silicon sealant to the base of the
belly pan, making sure that you cover all of the gluing surfaces.
This includes not only the sides of the belly pan, but the front
and back, too.
☞Make sure to use enough silicon sealant to fill any small
gaps or irregularities in the glue joint.
❑Set the belly pan into place and realign it. The sides and bottom of the belly pan should be even with the sides and
bottom of the fuselage. When satisfied with the alignment, push the belly pan down firmly and remove any excess silicon
sealant, using a paper towel and water. Hold the belly pan securely in place, using pieces of masking tape, until the silicon
sealant completely cures.
✦✦
✦✦
✦IMPORTANT✦✦
✦✦
✦It will take the silicon sealant about 24 hours to fully cure. We suggest not moving the assembly during
this time. You must allow sufficient time for the silicon sealant to dry.
❑After the silicon sealant has fully cured, remove the masking tape from the belly pan, then remove the wing from
the fuselage.
❑Look carefully at the glue joint between the belly pan and the wing. If there are any gaps in the glue joint, carefully fill
them using extra silicon sealant, making sure to remove any excess before it cures, using a paper towel and water. This
will ensure the strongest possible bond.

14
A=A-1
❑Kwik Bond Thin C/A
❑Kwik Bond 5 Minute Epoxy
❑Kwik Bond 30 Minute Epoxy
❑Kwik Bond C/A Debonder
❑Pacer Z-42 Blue Threadlocker
❑Lightweight Oil or Petroleum Jelly
❑# 1 Phillips Head Screwdriver
❑Wire Cutters
❑Needle Nose Pliers
❑Excel Modeling Knife
❑Electric Drill
❑1/16" & 5/64" Drill Bits
❑(1) Horizontal Stabilizer w/Elevator Halves
❑(1) Vertical Stabilizer w/Rudder
❑(9) Steel-Pinned Hinges
❑(1) Tail Wheel Wire w/Tail Wheel
❑(1) Aluminum Tail Wheel Bracket
❑(1) Wheel Collar w/Grub Screw
❑(2) M2 x 8mm Flange-Head Wood Screws
❑(1) Precovered Fuselage Fairing
❑(1) 1.5mm Hex Wrench
❑Dubro T-Pins
❑Ernst Airplane Stand
❑Ruler
❑Pencil
❑Builder's Triangle
❑220 Grit Sandpaper w/Sanding Block
❑Masking Tape
❑Paper Towels
❑Rubbing Alcohol
❑NHP Epoxy Mixing Sticks
❑NHP Epoxy Mixing Cups
YOU'LL NEED THE FOLLOWING PARTS FROM THE KIT:
YOU'LL NEED THE FOLLOWING TOOLS AND SUPPLIES:
SECTION 8: STABILIZER INSTALLATION
STEP 1: ALIGNING THE HORIZONTAL STABILIZER
❑Remove the two elevator halves and six hinges from the horizontal stabilizer and set them aside for now.
✦✦
✦✦
✦IMPORTANT✦✦
✦✦
✦Don't skip ahead and hinge the elevator halves before installing the stabilizer. If you hinge the elevator
halves now, it will be impossible to install the stabilizer.
❑Using a modeling knife, cut away and remove the covering
material from over the horizontal and vertical stabilizer
mounting slots in the back of the fuselage.
❑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.
☞Make sure that the top of the stabilizer is toward the top of
the fuselage.
Continued On Next Page
☛☛
☛☛
☛

15
B=B-1
C=C-1
❑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.
✦✦
✦✦
✦IMPORTANT✦✦
✦✦
✦The front of the stabilizer should be able to pivot from side to side and the back should stay firmly in
place and aligned. The trailing edge should not be allowed to move from side to side.
❑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 both of these measurements are equal, you're
assured that the stabilizer is square to the wing.
❑When you are 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 pieces of masking tape or T-Pins to
hold the stabilizer firmly in place and aligned.
❑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.
☞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 the stabilizer mounting slot, then reinstall the stabilizer
and check the alignment once more. Repeat this procedure
until you are satisfied with the alignment.
❑When satisfied with the alignment, hold the stabilizer firmly
in place and aligned, then 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.
Continued On Next Page
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☛☛
☛

16
STEP 2: MOUNTING THE HORIZONTAL STABILIZER
❑Remove the stabilizer from the fuselage.
❑Using a modeling knife, carefully cut away and remove the
covering material from between the lines you drew. Do this on
both the top and the bottom.
✦✦
✦✦
✦WARNING✦✦
✦✦
✦When cutting through the covering to remove
it, cut with only enough pressure to cut through only the
covering itself. Cutting down into the balsa structure could
weaken the stabilizer and cause it to fail during flight.
❑Mix and apply a generous amount of 30 minute epoxy to ONLY the top and bottom gluing surfaces of the stabilizer.
✦✦
✦✦
✦IMPORTANT✦✦
✦✦
✦Because the stabilizer has to slide into place through the fuselage, apply epoxy only to the stabilizer.
This will prevent the epoxy from spreading over the entire length of one half of the stabilizer when you slide it into place.
❑Slide the stabilizer back 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 pieces of masking tape or T-Pins to hold the stabilizer in place
and aligned until the epoxy has fully cured.
✦✦
✦✦
✦IMPORTANT✦✦
✦✦
✦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.
STEP 3: ALIGNING & MOUNTING THE VERTICAL STABILIZER
❑Remove the rudder and three hinges from the vertical stabilizer and set them aside for now.
❑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.
❑With the vertical stabilizer in position, use a builder's
triangle to check that the vertical stabilizer is aligned 90º to the
horizontal stabilizer.
Continued On Next Page
☛☛
☛☛
☛

17
❑When satisfied with the fit and alignment, carefully cut away and remove the covering material from the gluing surfaces
and glue the vertical stabilizer into place, using a generous amount of 30 minute epoxy. Quickly remove the excess epoxy
and use pieces of masking tape to hold the vertical stabilizer in place until the epoxy has fully cured.
❑Slide the wheel collar, followed by the aluminum mounting
bracket onto the tail wheel wire, making sure that the bushing
on the tail wheel bracket is down toward the coil in the tail wheel
wire, as shown.
❑Using needle nose pliers, carefully make a 90º bend in the
tail wheel wire, 2-1/4" up from the top of the coil.
❑Using wire cutters, cut off the excess wire, leaving 1" of
wire beyond the bend.
STEP 4: HINGING THE ELEVATOR HALVES
❑Hinge the elevator halves, using the same techniques that you used to hinge the ailerons. Each elevator half is hinged
using three hinges. When hinging the elevator halves, there should be no more than a 1/16" wide gap between each
elevator counter-balance and the ends of the horizontal stabilizer.
✦✦
✦✦
✦IMPORTANT✦✦
✦✦
✦Don't forget that when hinging the elevator halves to sand the mounting tabs of the hinges to roughen
the metal and to counter-sink the hinges into the elevator halves to minimize the hinge gap. Don't forget to apply
lightweight oil or petroleum jelly to each hinge pivot point to keep from gluing the hinges solid, too.
STEP 5: INSTALLING THE TAIL WHEEL WIRE
❑Using a generous amount of 5 minute epoxy, glue the
fuselage tail fairing to the bottom of the fuselage, making sure
that the back edge of the fuselage tail fairing is even with the
back edge of the fuselage and that the fuselage tail fairing is
pushed down firmly against the fuselage.
☞Make sure to remove the covering material from the
gluing surfaces before gluing the fuselage tail fairing into place.
❑Using a ruler and a pencil, measure up 1-1/4" from the
bottom of the rudder (at the leading edge) and draw a mark.
❑Using a drill with a 5/64" diameter drill bit, carefully drill a
1-1/8" deep hole into the leading edge of the rudder, at the
mark you drew.
✦✦
✦✦
✦IMPORTANT✦✦
✦✦
✦Be careful to make sure that you drill the
hole perpendicular to the leading edge and be careful not to
drill out through the sides of the rudder.
❑Using a modeling knife, cut away and remove the covering material from over the fuselage tail fairing mounting slot in the
bottom of the fuselage. The slot is located on the centerline of the fuselage, 3-1/2" in front of the back edge of the fuselage.
Continued On Next Page
☛☛
☛☛
☛

18
❑After the epoxy fully cures, mount the aluminum tail wheel
bracket to the bottom of the fuselage tail fairing, using two
M2 x 8mm wood screws.
✦✦
✦✦
✦IMPORTANT✦✦
✦✦
✦Before installing the wood screws, drip
several drops of thin C/A into the pilot holes you drilled and
allow the C/A to fully cure. The C/A will harden the surrounding
plywood, making the mounting area stronger.
☞Plywood has been preinstalled in the fuselage tail fairing
to thread the wood screws into.
❑Using a modeling knife, carefully cut a shallow groove in
the leading edge of the rudder from the base of the hole down
to the bottom of the rudder.
❑Test-fit the tail wheel wire into the hole you drilled. When
properly aligned, the wire should rest within the groove and the
front edge of the wire should be flush with the leading edge of
the rudder.
☞With the tail wheel wire in place, double-check that the tail
wheel is lined up with the bottom of the rudder. This will
ensure that the tail wheel will track properly with the rudder.
❑When satisfied with the fit and alignment, remove the tail wheel wire and use 220 grit sandpaper to roughen only the
gluing surfaces of the wire.
❑Glue the tail wheel wire into place, using a generous amount of 5 minute epoxy. Remove any excess epoxy, using a
paper towel and rubbing alcohol, and allow the epoxy to set up before proceeding.
STEP 6: HINGING THE RUDDER
❑Hinge the rudder, using the same techniques that you used to hinge the ailerons and the elevator halves. The rudder
is hinged using three hinges. When hinging the rudder, the bottom of the rudder should be even with the bottom of the
fuselage tail fairing and there should be no more than a 1/16" wide gap between the rudder counter-balance and the top of
the vertical stabilizer.
✦✦
✦✦
✦IMPORTANT✦✦
✦✦
✦Don't forget that when hinging the rudder to sand the mounting tabs of the hinges to roughen the
metal and to counter-sink the hinges into the rudder to minimize the hinge gap. Don't forget to apply lightweight oil or
petroleum jelly to each hinge pivot point to keep from gluing the hinges solid, too.
❑Partially thread the grub screw into the wheel collar. Push the wheel collar firmly against the tail wheel bracket and
tighten the grub screw securely, using the hex wrench provided.
☞We suggest applying a drop of Blue Threadlocker to the grub screw so that it doesn't come loose during flight.

19
❑Kwik Bond Thin C/A
❑Pacer Z-42 Blue Threadlocker
❑# 1 & # 2 Phillips Head Screwdrivers
❑Adjustable Open-End Wrenches (2)
❑(1) Prebent Aluminum Main Gear Strut
❑(2) Fiberglass Wheel Pants
❑(2) Main Gear Wheels
❑(2) M5 x 35mm Threaded Axles
❑(2) M5 Hex Nuts
❑(4) M3 x 12mm Machine Screws
❑(4) M3 Flat Washers
❑(2) Wheel Collars w/Grub Screws
❑(2) M2 x 8mm Flange-Head Wood Screws
❑(1) 1.5mm Hex Wrench
❑Electric Drill
❑1/16" Drill Bit
❑Ernst Airplane Stand
❑Pencil
YOU'LL NEED THE FOLLOWING PARTS FROM THE KIT:
YOU'LL NEED THE FOLLOWING TOOLS AND SUPPLIES:
SECTION 9: MAIN LANDING GEAR INSTALLATION
STEP 1: INSTALLING THE MAIN GEAR STRUT
❑Install the main gear strut onto the bottom of the fuselage, using four M3 x 12mm machine screws and four M3 flat
washers. Blind nuts have been preinstalled into the landing gear mounting block to thread the machine screws into.
STEP 2: INSTALLING THE WHEELS & WHEEL PANTS
☞The wheels and wheel pants are installed using the order
of assembly shown at left.
❑Slide one M5 x 35mm threaded axle through the predrilled
hole in the main gear strut.
❑Partially slide one wheel pant, followed by one M5 hex nut,
main gear wheel and wheel collar onto the threaded axle.
❑While holding the wheel pant in position (the molded recess in the side of the wheel pant should be parallel with the front
and back edges of the main gear strut), use two adjustable wrenches to firmly tighten the threaded axle and hex nut.
✦✦
✦✦
✦IMPORTANT✦✦
✦✦
✦Tighten the assembly firmly so that the wheel pant cannot rotate under pressure.
❑While holding the wheel pant aligned, drill a 1/16" diameter
pilot hole through the wheel pant, using the small predrilled
hole in the main gear strut as a guide.
✦✦
✦✦
✦IMPORTANT✦✦
✦✦
✦Before installing the wood screw in the
next procedure, drip several drops of thin C/A into the pilot
hole you drilled and allow the C/A to fully cure. The C/A will
harden the surrounding plywood, making the mounting
area stronger.
❑Install and tighten one M2 x 8mm flange-head wood screw
to lock the wheel pant into place and keep it from turning.
❑Install the grub screw into the wheel collar (with a drop of Blue Threadlocker to lock it into place) and tighten it firmly,
using the hex wrench provided. Double-check that the wheel spins freely.
❑Repeat the previous procedures to install the second wheel and wheel pant assembly. Before locking the second wheel
pant assembly into place, double-check that both wheel pants are lined up with each other when viewed from the side.

20
❑Kwik Bond Thin C/A
❑Pacer Z-42 Blue Threadlocker
❑# 2 Phillips Head Screwdriver
❑2.5mm & 3mm Hex Wrenches
❑Adjustable Wrench
❑(4) Rubber Isolation Mounts
❑(4) Predrilled Aluminum Plates w/Threaded Holes
❑(4) Predrilled Aluminum Plates w/Plain Holes
❑(4) M4 x 12mm Socket-Cap Screws
❑(4) M4 Flat Washers
❑(8) M3 x 18mm Socket-Cap Screws
❑(4) M4 x 30mm Wood Screws
❑(4) M4 Flat Washers
❑Electric Drill
❑3/32" Drill Bit
❑Ernst Airplane Stand
❑Pencil
YOU'LL NEED THE FOLLOWING PARTS FROM THE KIT:
YOU'LL NEED THE FOLLOWING TOOLS AND SUPPLIES:
SECTION 10: ENGINE INSTALLATION
STEP 1: INSTALLING THE ENGINE MOUNTING BRACKETS
✦✦
✦✦
✦IMPORTANT✦✦
✦✦
✦The following steps outline the installation of a four-stroke engine. If you are installing a two-stroke
engine, the installation procedures are the same.
❑Use the drawing included in the engine mount assembly
bag to carefully assemble the four engine mounting brackets,
using eight M3 x 18mm socket-cap screws, as shown.
✦✦
✦✦
✦IMPORTANT✦✦
✦✦
✦When assembling the mounting brackets,
we strongly recommend applying Blue Threadlocker to the
socket-cap screws. This will prevent the screws from
loosening during flight.
If you're planning on using a 1.20 size engine, we suggest
using a stronger soft-mount system, such as the Dave Brown
VibraDamp soft-mount system.
❑Carefully install each of the four mounting brackets onto
your engine, using four M4 x 12mm socket-cap screws and
four M4 flat washers.
☞When tightening the screws, make sure that the mounting
brackets are parallel with the engine mounting lugs.
✦✦
✦✦
✦IMPORTANT✦✦
✦✦
✦Don't apply Blue Threadlocker to the four
socket-cap screws yet. Wait until after you've installed the
throttle pushrod wire in the next section.
❑Remove the muffler assembly and the high speed needle valve from your engine and set them aside until later.
STEP 2: ALIGNING & INSTALLING THE ENGINE
❑Slide your spinner backplate onto the engine and secure it into place, using the engine's propeller washer and nut.
❑Temporarily place the engine assembly onto the hardwood mounting beams.
Continued On Next Page
☛☛
☛☛
☛