Phoenix Model decathlon Instruction Manual Download Page 1

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6. Secure the clevis to the control horn.

7. Locate one nylon servo arm, and using wire

cutters, remove all but one of the arms using a
2mm drill bit, enlarge the third hole out from the
center to accommodate the rudder pushrod
wire.

8. Plug the rudder servo into the receiver and

center the servo. Install the servo arm onto the
servo.

9. Center the rudder and hold it in place using a

piece of masking tape.

10. With the rudder and rudder servo centered,

carefully place a mark on the rudder pushrod
wire where it crosses the hole in the servo arm.

11. Using a pliers, carefully make a 90 degree

bend up at the mark made. Cut off excess wire,
leaving about 8mm beyond the bend.

12. Insert the 90 degree bend up through the hole

in the servo arm. Install one nylon snap keeper
over the wire to secure it to the arm. Install the
servo arm retaining screw and remove the
masking tape from the rudder.

Remove the covering

Rudder servo

MOUNTING THE COWL

1. Remove the muffler and needle valve

assembly from the engine. Slide the fiberglass
cowl over the engine.

2. Measure and mark the locations to be cut out

for  engine  head  clearance,  needle  valve,
muffler,.  Remove  the  cowl  and  make  these
cutouts  using  a  rotary  tool  with  a  cutting  disc
and a rotary sanding drum attachment.

4. Manually push the carburator barrel fully closed.

Angle the arm back about 45 degree from
center and attach the servo arm onto the servo.
With the carburator barrel fully closed, tighte
the set screw in the adjustable metal connector.

5. Remove the excess throttle pushrod wire using

wire cutters and install the servo arm retaining
screw.

2. Plug the throttle servo into the receiver and turn

on  the  radio  system.  Check  to  ensure  that  the
throttle  servo  output  shaft  is  moving  in  the
correct  direction.  When  the  throttle  stick  is
moved  forward  from  idle  to  full  throttle,  the
throttle barrel should also open and close using
this  motion.  If  not,  reverse  the  direction  of  the
servo, using the transmitter.

3. Slide the adjustable metal connector / servo

arm assembly over the plain end of the
pushrod wire. Position the throttle stick and the
throttle trim at their lowest positions.

Throttle servo

INSTALLING THE THROTTLE

1. Install one adjustable metal connector through

the  third  hole  out  from  the  center  of  one  servo
arm, enlarge the hole in the servo arm using a
2mm  drill  bit  to  accommodate  the  servo
connector.  Remove  the  excess  material  from
the arm.

After installing the adjustable metal connector

apply a small drop of thin C/A to the bottom
nut. This will prevent the connector from
loosening during flight.

3. Slide the cowl back into place. Align the front of

the cowl with the crankshaft of the engine. The
front  of  the  cowl  should  be  positioned  so  the
crankshaft  is  in  the  middle  of  the  precut
opening.  Hold  the  cowl  firmly  in  place  using
several pieces of masking tape.

4. While holding the cowl firmly in position, drill

four 1,6mm pilot holes through both the cowl
and the side edges of the firewall.

5. Using a 3mm drill bit, enlarge the four holes in

the cowling

Enlarging the holes through the cowl will prevent

the fiberglass from splitting when the mounting
screws are installed.

6. Slide the cowl back over the engine and secure

it in place using four 3mm x 12mm wood
screws.

7. Install the muffler. Connect the fuel and pressure

lines to the carburator, muffler and fuel filler
valve. Tighten the screws completely.

Cowl area cutout
for proper airflow
to carburetor.

INSTALLING THE WING

INSTALLING THE RECEIVER AND BATTERY

1. Plug the servo leads and the switch lead into

the  receiver.  You  may  want  to  plug  an  aileron
extension into the receiver to make plugging in
the  aileron  servo  lead  easier  when  you  are
installing  the  wing.  Plug  the  battery  pack  lead
into the switch.

2. Wrap the receiver and battery pack in the

protective foam to protect them from vibration.
Use a rubber band or masking tape to hold the
foam in place.

INSTALLING THE SWITCH

1. The switch should be mounted on the fuselage

side,  opposite  the  muffler,  close  enough  to  the
receiver  so  the  lead  will  reach.  Use  the  face
plate  of  the  switch  cut  out  and  locate  the
mounting holes.

2. Cut out the switch hole using a modeling knife.

Use a 2mm drill bit and drill out the two
mounting holes through the fuselage side.

3. Secure the switch in place using the two

machine screws provided with the radio
system.

1. Installing the wing to the fuselage and secure

the wing.

2. The wing strut.

FINAL ASSEMBLY

INSTALLING THE SPINNER

Install the spinner back-plate, propeller and

spinner cone. The spinner cone is held in place
using two 3mm x 15mm wood screws.

The propeller should not touch any part of the

spinner cone. If it dose, use a sharp modeling
knife and carefully trim away the spinner cone
where the propeller comes in contact with it.

Screw

Pilot

C.A Glue

TOOLS AND SUPPLIES NEEDED.

• Medium C/A glue
• 30 minute epoxy
• 6 minute epoxy
• Hand or electric drill
• Assorted drill bits
• Modeling knife
• Straight edge ruler
• 2 bender plier
• Wire cutters
• Masking tape
• Thread lock
• Paper towels
• Rubbing alcohol

SUGGESTION

To avoid scratching your new airplane, do not unwrap
the pieces until they are needed for assembly. Cover
your  workbench  with  an  old  towel  or  brown  paper,
both  to  protect  the  aircraft  and  to  protect  the  table.
Keep  a  couple  of  jars  or  bowls  handy  to  hold  the
small parts after you open the bag.

NOTE:

Please trial fit all the parts. Make sure you have the
correct parts and that they fit and are aligned properly
before gluing! This will assure proper assembly. The
Ryan STA GP/EP SIZE .91 or 15CC SCALE 1:5 ARF
is hand made from natural materials, every plane is
unique and minor adjustments may have to be made.
However, you should find the fit superior and
assembly simple.

The painted and plastic parts used in this kit are fuel
proof. However, they are not tolerant of many harsh
chemicals including the following: paint thinner, C/A
glue accelerator, C/A glue debonder and acetone. Do
not let these chemicals come in contact with the
colors on the covering and the plastic parts.

SAFETY PRECAUTION:

• This is not a toy
• Be sure that no other flyers are using your radio

frequency.

• Do not smoke near fuel
• Store fuel in a cool, dry place, away from

children and pets.

• Wear safety glasses.
• The glow plug clip must be securely attached to

the glow plug.

• Do not flip the propeller with your fingers.
• Keep loose clothing and wires away from the propeller.
• Do not start the engine if people are near. Do not

stand in line with the side of the propeller.

• Make engine adjustments from behind the propeller

only. Do not reach around the spinning propeller.

PREPARATIONS

Remove  the  tape  and  separate  the  ailerons
from  the  wing  and  the  elevators  from  the  stab.
Use  a  covering  iron  with  a  covering  sock  on
high  heat  to  tighten  the  covering  if  necessary.
Apply  pressure  over  sheeted  areas  to
thoroughly bond the covering to the wood.

INSTALLING THE VERTICAL STABILIZER

Repeat step 1 - step 2 from the installing aileron

for the installing rudder.

3. Place the servo into the servo tray. Center the

servo within the tray and drill 1,6mm pilot holes
through the block of wood for each of the four
mounting screws provided with the servo.

Remove the covering

INSTALLING THE AILERON SERVOS

1. Install the rubber grommets and brass eyelets

onto the aileron servo.

2. Using a modeling knife, remove the covering

from over the pre-cut servo arm exit hole on the
aileron servo tray / hatch. This hole will allow
the servo arm to pass through when installing
the aileron pushrods.

5. Place the aileron servo tray / hatch into the

servo  box  on  the  bottom  of  the  wing  and  drill
1,6mm  pilot  holes  through  the  tray  and  the
servo box for each of the four mounting screws.
Secure  the  servo  tray  in  place  using  the
mounting screws provided ( 2mm x 12mm ).

6. Repeat step # 2 - # 5 to install the second

aileron servo in the opposite wing half.

4. Using the thread as a guide and using masking

tape,  tape  the  servo  lead  to  the  end  of  the
thread: carefully pull the thread out. When you
have  pulled  the  servo  lead  out,  remove  the
masking  tape  and  the  servo  lead  from  the
thread.

Servo lead

INSTALLING THE AILERONS

1. Test fit the ailerons to the wing with the hinges.

If the hinges don’t remain centered, stick a pin
through the middle of the hinge to hold it in
position.

TEMPORARY PIN

TO KEEP HINGE

CENTERED

C.A glue

2. Apply six drops of thin CA to the top and bottom

of each hinge. Do not use CA accelerator. After
the CA has fully hardened, test the hinges by
pulling on the aileron.

INSTALLING THE HORIZONTAL STABILIZER

1. Using a modeling knife, cut away the covering

from the fuselage for the stabilizer and remove it.

Elevator Control

Aileron Control

8mm

Rudder Control

20mm

8mm

Ailerons : 8mm up

8mm down

Elevator : 8mm up

8mm down

Rudder : 20mm right 20mm left

CONTROL THROWS

1. We highly recommend setting up a plane using

the control throws listed.

2. The control throws should be measured at the

widest point of each control surface.

3. Check to be sure the control surfaces move in

the correct directions.

80mm

BALANCING

1. It is critical that your airplane be balanced

correctly. Improper balance will cause your
plane to lose control and crash.

THE CENTER OF GRAVITY IS LOCATED 80mm

BACK FROM THE LEADING EDGE OF THE
WING, AT THE FUSELAGE.

2. Mount the wing to the fuselage. Using a couple

of pieces of masking tape, place them on the
top side of the wing 80mm back from the
leading edge, at the fuselage sides.

3. Turn the airplane upside down. Place your

fingers on the masking tape and carefully lift
the plane .

4. If the nose of the plane falls, the plane is heavy

nose. To correct this first move the battery pack
further  back  in  the  fuselage.  If  this  is  not
possible  or  does  not  correct  it,  stick  small
amounts  of  lead  weight  on  the  fuselage  under
the  horizontal  stabilizer.  If  the  tail  of  the  plane
falls,  the  plane  is  tail  heavy.  To  correct  this,
move the battery and receiver forward or if this
is  not  possible,  stick  weight  into  the  firewall.
When  balanced  correctly,  the  airplane  should
sit level or slightly nose down when you lift it up
with your fingers.

LATERAL BALANCE

After you have balanced a plane on the C.G.

You should laterally balance it. Doing this will
help the airplane track straighter.

1. Turn the airplane upside down. Attach one loop

of heavy string to the engine crankshaft and
one to the tail wheel wire. With the wings level,
carefully lift the airplane by the string. This may
require two people to make it easier.

2. If one side of the wing fall, that side is heavier

than  the  opposite. Add  small  amounts  of  lead
weight  to  the  bottom  side  of  the  lighter  wing
half's  wing  tip.  Follow  this  procedure  until  the
wing stays level when you lift the airplane.

FLIGHT PREPARATION PRE FLIGHT CHECK

1. Completely charge your transmitter and receiver

batteries before your first day of flying.

2. Check every bolt and every glue joint in your

plane to ensure that everything is tight and well
bonded.

3. Double check the balance of the airplane

4. Check the control surface

5. Check the receiver antenna . It should be fully

extended and not coiled up inside the fuselage.

6. Properly balance the propeller.

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Blow through one of the lines to ensure the fuel

lines have not become kinked inside the fuel
tank compartment. Air should flow through
easily.

Do not secure the tank into place permanently

until after balancing the airplane. You may
need to remove the tank to mount the battery in
the fuel tank compartment.

9. To secure the fuel tank in place, apply a bead of

silicon sealer to the forward area of the tank,
where it exits the fuselage behind the engine
mounting box and to the rear of the tank at the
forward bulkhead.

Zip tie

To carburator

To muffler

To vent Tube

SERVO INSTALLATION
INSTALLING THE FUSELAGE SERVOS

1. Install the rubber grommets and brass collets

into the elevator, rudder and throttle servos.
Test fit the servos into the servo tray. Trim the
tray if necessary to fit your servos

2. Mount the servos to the tray using the mounting

screws provided with your radio system.

Rudder servo

Elevator servo

Control horn elevator

INSTALLING THE RUDDER PUSHROD

1. Locate the pushrod exit slot on the right side of

the fuselage.

2. Carefully cut away the covering material from

the slot.

3. Working from inside the fuselage, slide the

threaded  end  of  the  remaining  pushrod  down
the  inside  of  the  fuselage  until  the    pushrod
reaches  the  exit  slot.  Carefully  reach  in  with  a
small screw driver and guide the pushrod out of
the exit slot.

4. Install the clevis on the rudder pushrod. Make

sure 6mm of thread shows inside the clevis.

5. The control horn should be mounted on the right

side of the rudder.

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SPECIFICATION
- Wingspan: 1800mm (70.8 in)
- Length: 1355mm (53.3 in)
- Flying weight: 4100-4300 g
- Wing area: 51 dm2
- Wing loading: 80g/dm2
- Wing type: Naca airfoils
- Covering type: Genuine ORACOVER®
- Spinner size: Plastic 58mm (included)
- Radio: 4 channel minimum (not included)
- Servo: 5 hi torque servo: 2 aileron; 1 elevator;
1 rudder; 1 throttle (not included)
- Recommended receiver battery:
4.8-6V / 2000mAh NiMH (not included)
- Servo mount: 21mm x 42 mm
- Propeller: suit with your engine
- Engine: .61-.91 / 2-stroke or .91/4-stroke glow
engine(not included) or 15CC gas engine(not included)

- Motor: brushless outrunner 2200 W, 500 KV
(not included)
- Gravity CG: 80 mm (3.1 in) Back from the leading
edge of the wing, at the fuselage
- Control throw Ailerons: Low: 8mm up/down,
10% expo; High: 10mm up/down, 10% expo
- Control throw Elevators: Low: 8mm up/down,
12% expo; High: 10mm up/down, 12% expo
- Control throw Rudder: Low: 20mm right/left,
15% expo; High: 30mm right/left, 15% expo
- Experience level: Intermediate
- Plane type: Scale Civilian
RECOMMENDED MOTOR AND BATTERY SET UP
- Motor: RIMFIRE .80 (not included)
- Lipo cell: 6-10 cells / 4000 – 5500mAh (not included)
- Esc: 60-100A (not included)

Made in Vietnam

When ready to fly, first extend the

transmitter aerial.

Operate the control sticks on the

transmitter and check that the control

surfaces move freely and in the

CORRECT directions.

ALWAYS land the model INTO the

wind, this ensures that the model lands

at the slowest possible speed.

Switch on the transmitter.

Switch off the transmitter.

Check that the transmitter batteries

have adequate power.

Switch off the receiver.

Switch on the receiver.

ALWAYS take off into the wind.

Check that the wings are correctly

fitted to the fuselage.

If the model does not respond correctly

to the controls, land it as soon as

possible and correct the fault.

Empty the fuel tank after flying, fuel left

in the tank can cause corrosion and

lead to engine problems.

I/C FLIGHT WARNINGS

INSTALLING THE ENGINE

Locate the long piece of wire used for the throttle

pushrod.  One  end  of  the  wire  has  been
pre-bend  in  to  a  "Z"  bend  at  the  factory.  This
"Z"  bend  should  be  inserted  into  the  throttle
arm of the engine when the engine is fitted onto
the engine mount. Fit the engine to the engine
mount using the screws provided.

125mm

- OS .91 two stroke.

125mm

3. Now, remove the engine. Using a 5mm drill bit,

drill holes through the firewall and the forward
bulkhead at the marks made.

4. Slide the pushrod housing through the hole in

the firewall, through the hole in the forward
bulkhead, and into the servo compartment.

5. Apply a couple of drops of thin C/A to the

pushrod

housing where it exits the firewall and where it

passes through the forward bulkhead. This will
secure the housing in place.

6. Using a modeling knife, cut off the nylon pushrod

housing 26mm in front of the servo tray.

INSTALLING THE THROTTLE PUSHROD HOUSING

1. Place the engine into the engine mount and

align it properly with the front of the cowling.
The distance from the firewall to the front of the
engine thrust washer should 125mm.

If your engine is equipped with a remote needle

valve, we suggest installing it into the engine at
this time.

2. When satisfied with the alignment of the engine,

use a pencil and mark the mounting hole
location onto the firewall, where the throttle
pushrod will exit.

ENGINE INSTALLATION
Installing the engine mount

Install the engine mount using 4 screw 4mm x 25mm

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INSTALLING THE MOTOR AND BATTERY

This model can fly with electric, here is our
recommended for set up the system.

- Motor: RIMFIRE .60 (not included)
- Lipo cell: 6 cells / 4000 – 5500mAh (not included)
- Esc: 60-100A (not included)

Installing the electric motor

70mm

50mm

16mm

5. Test fit the stopper assembly into the tank. It

may  be  necessary  to  remove  some  of  the
flashing  around  the  tank  opening  using  a
modeling  knife.  If  flashing  is  present,  make
sure none of it falls into the tank.

6. When satisfied with the alignment of the stopper

assembly tighten the 3mm x 20mm machine
screw until the rubber stopper expands and
seals the tank opening. Do not over tighten the
assembly as this could cause the tank to split.

7. Using a modeling knife, cut 3 lengths of fuel line

150mm long. Connect 2 lines to the 2 vent
tubes and 1 line to the fuel pickup tube in the
stopper.

8. Feed three lines through the fuel tank

compartment and through the pre-drilled hole in
the  firewall.  Pull  the  lines  out  from  behind  the
engine,  while  guiding  the  fuel  tank  into  place.
Push  the  fuel  tank  as  far  forward  as  possible,
the front of the tank should just about touch the
back of the firewall.

FUEL TANK
INSTALLING THE STOPPER ASSEMBLY

1. The stopper has been pre-assembled at the

factory.

2. Using a modeling knife, cut one length of silicon

fuel  line  (the  length  of  silicon  fuel  line  is
calculated  by  how  the  weighted  clunk  should
rest about 8mm away from the rear of the tank
and  move  freely  inside  the  tank).  Connect  one
end  of  the  line  to  the  weighted  clunk  and  the
other  end  to  the  nylon  pick  up  tube  in  the
stopper.

3. Carefully bend the second nylon tube up at a 45

degree angle (using a cigarette lighter). This
tube will be the vent tube to the muffler.

4. Carefully bend the third nylon tube down at a 45

degree angle (using a cigarette lighter). This
tube will be vent tube to the fueling valve

When the stopper assembly is installed in the

tank, the top of the vent tube should rest just
below the top surface of the tank. It should not
touch the top of the tank.

ESC

Battery

Screw

LANDING GEAR INSTALLATION

1. A full set landing gear from 1 side.

2. There are two hardwood landing gear blocks

with  one  precut  channel  in  each  block  in  the
bottom of the wing. Locate the two landing gear
blocks  on  the  bottom  of  the  wing  and  using  a
modeling  knife,  remove  the  covering  from  over
the precut channels.

Remove the covering

collar

Screw

3. Test fit the two main gear wires into the

channels. When satisfied with the fit, secure
the wires in place using the four nylon straps
and eight 3*12mm sheet metal screws.

5. Slide the plastic cover through the landing gear.

Installing the wheel and secure it by two collars

6. Secure the plastic cover to the wing.

4. Glue the plastic cover the wheel using C.A glue.

Main gear

Screw

Meta strap

C.A glue

INSTALLING THE TAIL WHEEL

1. Using the knife cut away the wood from the

bottom of the rudder and slide the two nylon
clasps into the slot. Using C.A glue the nylon
clasps as shown.

2. Set the tail wheel assembly in place on the

plywood plate.

3. Drill 2,6mm pilot holes through the plywood plate.

4. Secure the tail wheel bracket in place using two

3mm x 12mm screw.

5. Align the tail wheel wire so that the wire is

parallel with the bottom of the rudder.

Remove the covering

Draw a center line

C.A glue

Glue with epoxy

C.A glue

Hinge

Screw

Remove the covering

Domino

Elevator servo

Throttle servo

Remove the covering

3. Check the fit of the horizontal stabilizer in its

slot. Make sure the horizontal stabilizer is
square and centered to the fuselage by taking
measurements, but don't glue anything yet.

4. With the horizontal stabilizer correctly aligned,

mark the shape of the fuselage on the top and
bottom of the tail plane using a water soluble /
non-permanent felt-tip pen.

5. Remove the stabilizer. Using the lines you just

drew as a guide, carefully remove the covering
from between them using a modeling knife.

When cutting through the covering to remove it,

cut with only enough pressure to only cut
through the covering it's self. Cutting into the
balsa structure may weaken it. This could lead
to possible failure during flight.

2. Draw a center line onto the horizontal stabilizer.

6. When you are sure that everything is aligned

correctly,  mix  up  a  generous  amount  of  30
minute epoxy. Apply a thin layer to the top and
bottom  of  the  stabilizer  mounting  area  and  to
the  stabilizer  mounting  platform  sides  in  the
fuselage.  Slide  the  stabilizer  in  place  and
re-align.

Double

check

all

your

measurements one more time before the epoxy
cures.  Remove  any  excess  epoxy  using  a
paper  towel  and  rubbing  alcohol  and  hold  the
stabilizer  in  place  with T-pins  or  masking  tape.

7. After the epoxy has fully cured, remove the

masking  tape  or  T-pins  used  to  hold  the
stabilizer in place and carefully inspect the glue
joints.  Use  more  epoxy  to  fill  in  any  gaps  that
were  not  filled  previously  and  clean  up  the
excess using a paper towel and rubbing alcohol.

8. Repeat step 1 - step 2 from the installing aileron

for the installing elevator.

9. Repeat step # 4 - # 8 to install the second

aileron  linkage.  After  both  linkages  are
completed,  connect  both  of  the  aileron  servo
leads  using  a  Y-harness  you  have  purchased
separately.

8. Insert the 90 degree bend down through the

hole  in  the  servo  arm.  Install  one  nylon  snap
keeper  over  the  wire  to  secure  it  to  the  arm.
Install  the  servo  arm  retaining  screw  and
remove the masking tape from the aileron.

5. Center the aileron and hold it in place using a

couple of pieces of masking tape.

6. With the aileron and aileron servo centered,

carefully place a mark on the aileron pushrod
wire where it crosses the hole in the servo arm.

7. Using pliers, carefully make a 90 degree bend

down at the mark made. Cut off the excess
wire, leaving about 4mm beyond the bend.

2. Attach the clevis to the outer hole in the control

horn.

3. Locate one nylon servo arm, and using wire

cutters, remove all but one of the arms. Using a
2mm drill bit, enlarge the third hole out from the
center of the arm to accommodate the aileron
pushrod wire.

4. Plug the aileron servo into the receiver and

center the servo. Install the servo arm onto the
servo. The servo arm should be perpendicular
to the servo and point toward the middle of the
wing.

INSTALLING THE AILERON LINKAGES

1. Working with the aileron linkage for now, thread

one nylon clevis at least 6 turns onto one of
the 2mm x 180mm threaded wires.

8. Plug the elevator servo into the receiver and

center the servo. Install the servo arm onto the
servo. The servo arm should be perpendicular
to the servo and point toward the middle of the
fuselage.

9. Connect the two elevator pushrod using the

metal domino.

10. With the elevator halves and elevator servo

centered, carefully place a mark on the elevator
pushrod wire where it crosses the hole in the
servo arm.

11. Using pliers, carefully make a 90 degree bend

up at the mark made. Cut off the excess wire,
leaving about 8mm beyond the bend.

12. Insert the 90 degree bend up through the hole

in the servo arm, install one nylon snap keeper
over the wire to secure it to the arm. Install the
servo arm retaining screw and remove the
masking tape the elevator halves.

3. Working from inside the fuselage, slide the

threaded end of the pushrod until it reaches the
exit slot. Carefully reach in with a small screw
driver and guide the pushrod out of the exit slot.

4. Install the clevis into the two elevator pushrod.

Make sure 6mm of thread shows inside the clevis.

5. The control horn should be mounted on the

bottom, left side and right side of the elevator.

INSTALLING THE ELEVATOR PUSHROD

1. Locate the pushrod exit slot on the right side

and left side of the fuselage. It is located
slightly ahead and below the horizontal
stabilizer.

2. Carefully cut away the covering material from

the slot.

7. Locate one nylon servo arm, and using wire