Phoenix Model Preceptor ARF EDF 90mm Instruction Manual Download Page 3

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I/C FLIGHT GUIDELINES

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.

PRECEPTOR 90MM

Instruction Manual

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

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:

1. 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  PRECEPTOR    EDF  90MM ARF
SCALE 1:7 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.

2. 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.

• 2 bender plier
• Wire cutters
• Masking tape
• Thread lock
• Paper towels
• Rubbing alcohol

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 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

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.

C.A glue

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.

PRECEPTOR 90MM

Instruction Manual

Ailerons : 10mm up 10mm down

Elevator : 10mm up 10mm down

Rudder : 20mm right 20mm left

Hi RATE

Screw

PRECEPTOR 90MM

Instruction Manual

3. Slide the air inlet to the fuselage.

4. Tie down the sponge (included with the kit) to the

EDF,(Must fit with the air inlet) and fix it with the tape.

5. Secure the EDF.

Hole

Air outlet

EDF

Air inlet

INSTALLING THE EDF (Electric ducted fan)

system

1. Trim 1 hole from the air outlet for the wires of EDF.

2. Slide the air outlet to the fuselage.

PRECEPTOR 90MM

Instruction Manual

4. Secure the strut to the electric retract and slide

the two cable to the steering plate.

Crimp

6. Secure the alxe.

7. Slide and install the two cable steering nose to

the servo.

Screw

5. Install the nose retract.

Screw

Remove the plastic

C.A glue

Remove the plastic

3. C.A glue plastic.

INSTALLING THE STEERING NOSE gear

1. Install the steering nose servo into the servo

tray in the fuselase.

9. Install the vertical stabilizer and glue it using

epoxy glue.

Epoxy glue

Servo lead

PRECEPTOR 90MM

Instruction Manual

8. Remove the covering.

Remove the covering

7. Repeat these step from installing the aileron
linkages to install the rudder linkages.

4. Secure the servo plate.

5. Remove the covering.

C.A glue

Remove the covering

6. Install and glue the rudder control horn.

PRECEPTOR 90MM

Instruction Manual

INSTALLING THE VERTICAL STABILIZER

1. Repeat these step from the installing aileron for

the installing rudder.

C.A glue

Remove the covering

2. Remove the covering.

3. Install the rudder servo.

Screw

Epoxy glue

10. Install the horizontal stabilizer and glue it

using epoxy glue.

Remove the covering

Servo lead

I/C FLIGHT WARNINGS

Always operate in open areas, away

from factories, hospitals, schools,

buildings and houses etc. NEVER fly

your aircraft close to people or built

up areas.

THE PROPELLER IS DANGEROUS

Keep fingers, clothing (ties, shirt

sleeves, scarves) or any other loose

objects that could be caught or drawn

in, away from the propeller. Take care

at ALL times.

Keep all onlookers (especially small

children and animals) well back from

the area of operation. This is a flying

aircraft, which will cause serious

injury in case of impact with a person

or animal.

NEVER fly near power lines, aerials

or other dangerous areas including

airports, motorways etc.

NEVER use damaged or deformed

propellers or spinners.

DO NOT dispose of empty fuel

containers on a fire, this can lead to

an explosion.

NEVER fly in wet conditions or on

windy or stormy days.

ALWAYS adjust the engine from

behind the propeller, and do not allow

any part of your body to be in line

with the propeller.

SPECIFICATION
- Wingspan: 1400mm (55.1 in)
- Length: 1540mm (60.6 in)
- Flying weight: 4.8-5.2 kg
- Wing area: 40dm2
- Wing loading: 125g/dm2
- Wing type: Naca airfoils
- Covering type: Genuine ORACOVER®
- Retract gear type: Electric retract gear (not
included); CNC Suspension Metal Struts (included)
- Radio: 6 - 9 channel . 8 mini hi-torque servo:
2 aileron; 2 flap; 2 elevator; 1 rudder;
1 steering nose; (not included)
- Servo mount : 12mm x 24mm

- Engine: edf 90mm with minimum thrust up 4 kg ;

8-12 cells (not included)

- Gravity CG: 165-170 mm (6.2-6.7 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: 20mm right/left, 15% expo

- Control throw Flaps: Mid: 15mm down;

Landing: 20mm down

- Experience level: advanced

RECOMMENDED EDF AND BATTERY SET UP

- EDF: 90mm, Minimum thrust 4 kg. Midi-Fan evo/

HET 650-68-1130 WeMoTec (not included)

- Lipo cell: 8-12 cells / 4000mAh 60C (not included)

- Esc 120-160 A Phoenix Castle (not included)

I n s t r u c t i o n M a n u a l

PRECEPTOR 90MM

Instruction Manual

8. Repeat these step from installing the aileron
linkages to install the elevator linkages.

9. Remove the rear of the covering.

C.A glue

Remove the covering

7. Install and glue the elevator control horn.

3. Install the servo.

4. Secure the servo plate.

Remove the covering

Screw

6. Remove the covering.

5. Make the same way for the second stabilizer.

To the cowl

PRECEPTOR 90MM

Instruction Manual

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.

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

5. Place the aileron servo tray / hatch into the

servo  box  on  the  bottom  of  the  wing  and  drill
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.

INSTALLING THE CONTROL HORNS

1. Remove the covering from the slot on the

bottom of the aileron.

2. Insert the control horn into the slot and secure it

by using C.A glue.

To the cowl

Remove the covering

8. Trim the plastic cover.

9. Glue the plastic cover.

C.A glue

Screw

6. Wooden belt for EDF (Included with the kit).

7. Secure the belt to the fuselage.

10. Fix the air outlet.

11. Cut the hole on the fuselage for air inlet.

12. Glue the plastic cover.

13. Glue the wooden plate onto the vertical stabilizer.

Remove the covering

C.A glue

PRECEPTOR 90MM

Instruction Manual

C.A glue

Aileron Control

8mm

Rudder Control

20mm

Flap Control

15mm

Elevator Control

8mm

PRECEPTOR 90MM

Instruction Manual

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.

5. 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.

6. 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.

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.

Ailerons : 8mm up 8mm down

Elevator : 8mm up 8mm down

Rudder : 20mm right 20mm left

Flap T/O: 15mm - Landing 20mm

LOW RATE

OPEN AND CLOSE the canopy

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
165-170mm  BACK  FROM  THE  LEADING
EDGE  OF  THE  WING,  AT  THE  FUSELAGE.
This  location  is  recommended  for  initial  test
flying  and  trimming.  BALANCE  A  PLANE
UPSIDE  DOWN  WITH  THE  FUEL  TANK
EMPTY.

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

of pieces of masking tape, place them on the
top side of the wing 165-170mm 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 nose

heavy.  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.

Open and Close

165-170mm

PRECEPTOR 90MM

Instruction Manual

INSTALLING THE AILERON LINKAGES

1. Working with the aileron linkage for now, thread

one clevis at least 14 turns onto one of the
threaded wires.

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.

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.

Silicone Tube

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

horn. Install a silicone tube on the clevis.

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.

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.

INSTALLING THE CONTROL HORNS for flap

Repeat step #1 - #3 from installing the control

horn for aileron to install the control horn for
flap.

INSTALLING THE flap LINKAGE