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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.

2

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.

1

• 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

1

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

13

 Ailerons : 10mm up     10mm down

 Elevator : 10mm up     10mm down

 Rudder  : 20mm right  20mm left

Hi RATE

63

65

64

66

Screw

PRECEPTOR 90MM

Instruction Manual

10

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.

60

61

Hole

Air outlet

EDF

Air inlet

62

 

INSTALLING THE EDF (Electric ducted fan)

 system

59

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

9

4. Secure the strut to the electric retract and slide 

the two cable to the steering plate.

55

Crimp

6. Secure the alxe.

7.  Slide  and  install  the  two  cable  steering  nose  to 

the servo.

M3

58

Screw

57

5.  Install the nose retract.

56

Screw

52

53

Remove the plastic

C.A glue

54

2.  

Remove the plastic

.

3.  C.A glue plastic.

51

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.

50

Epoxy glue

49

Servo lead

PRECEPTOR 90MM

Instruction Manual

47

8

8. Remove the covering.

48

Remove the covering

Remove the covering

43

46

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

4. Secure the servo plate.

5. Remove the covering.

45

C.A glue

44

Remove the covering

6. Install and glue the rudder control horn.

PRECEPTOR 90MM

Instruction Manual

7

INSTALLING THE VERTICAL STABILIZER

1.  Repeat  these  step  from  the  installing  aileron  for 

the installing rudder.

40

C.A glue

41

Remove the covering

2. Remove the covering.

42

3. Install the rudder servo.

Screw

39

Epoxy glue

10.    Install  the  horizontal  stabilizer  and  glue  it 

using epoxy glue.

37

Remove the covering

38

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

6

34

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

9. Remove the rear of the covering.

33

C.A glue

36

Remove the covering

35

7. Install and glue the elevator control horn.

30

3. Install the servo.

4. Secure the servo plate.

32

Remove the covering

29

Screw

31

6. Remove the covering.

5. Make the same way for the second stabilizer.

7

To the cowl

PRECEPTOR 90MM

Instruction Manual

2

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

3

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

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

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. 

6

To the cowl

8

Remove the covering

68

8. Trim the plastic cover.

9. Glue the plastic cover.

69

70

C.A glue

Screw

67

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

7. Secure the belt to the fuselage.

72

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

71

C.A glue

73

74

C.A glue

PRECEPTOR 90MM

Instruction Manual

11

C.A glue

Aileron Control

8mm 

8mm 

Rudder Control

20mm 

20mm 

Flap Control

15mm 

Elevator Control

8mm 

8mm 

PRECEPTOR 90MM

Instruction Manual

12

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. 

75

Open and Close

165-170mm

PRECEPTOR 90MM

Instruction Manual

3

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

13

10

11

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.

12

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

      Repeat step #1 - #9 from installing the aileron 

linkage to install the flap linkage.

9

3. Repeat step # 1 - # 2 to install the control horn 

on the opposite aileron.

C.A glue

control

PRECEPTOR 90MM

Instruction Manual

4

 

INSTALLING THE LANDING GEAR

20

18

19

Remove the covering

1.  The retract set (Electric retract not included with 

the kit).

2.  Remove the covering.

21

14

15

Not included

C.A glue

3.  Trim the plastic cover.

4.  Glue the plastic cover.

16

17

   

    In  case  you  want  to  use  with  the.  Electric  retract 

(not included with the kit), please pay attention with 
the dimension as picture below.

22

23

Screw

Screw

5.  Secure the retract to the wing.

6.  Install and secure the wheel.

INSTALLING THE HORIZONTAL STABILIZER

PRECEPTOR 90MM

Instruction Manual

5

25

Screw

24

Screw

1.  Repeat  these  step  from  the  installing  aileron  for 

the installing elevator.

27

C.A glue

28

Remove the covering

2. Remove the covering.

7.  Secure the strut to the retract.

8.  Lock-up the axle.

26

Machine screw

9. Secure the wooden plate.

Содержание Preceptor ARF EDF 90mm

Страница 1: ...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 Eleva...

Страница 2: ...vering 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 an...

Страница 3: ...sing 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 ser...

Страница 4: ...mm 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 th...

Страница 5: ...retract set Electric retract not included with the kit 2 Remove the covering 21 14 15 Not included C A glue 3 Trim the plastic cover 4 Glue the plastic cover 16 17 In case you want to use with the El...

Страница 6: ...ZONTAL STABILIZER PRECEPTOR 90MM Instruction Manual 5 25 Screw 24 Screw 1 Repeat these step from the installing aileron for the installing elevator 27 C A glue 28 Remove the covering 2 Remove the cove...

Страница 7: ...install the elevator linkages 9 Remove the rear of the covering 33 C A glue 36 Remove the covering 35 7 Install and glue the elevator control horn 30 3 Install the servo 4 Secure the servo plate 32 R...

Страница 8: ...at these step from the installing aileron for the installing rudder 40 C A glue 41 Remove the covering 2 Remove the covering 42 3 Install the rudder servo Screw 39 Epoxy glue 10 Install the horizontal...

Страница 9: ...nstruction Manual 47 8 8 Remove the covering 48 Remove the covering Remove the covering 43 46 7 Repeat these step from installing the aileron linkages to install the rudder linkages 4 Secure the servo...

Страница 10: ...55 Crimp 6 Secure the alxe 7 Slide and install the two cable steering nose to the servo M3 58 Screw 57 5 Install the nose retract 56 Screw 52 53 Remove the plastic C A glue 54 2 Remove the plastic 3...

Страница 11: ...own 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 60 61 Hole Air outlet EDF Air inlet 62 INSTALLING THE EDF Electric ducted fan syst...

Страница 12: ...Included with the kit 7 Secure the belt to the fuselage 72 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 stab...

Страница 13: ...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...

Страница 14: ...ne 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...

Страница 15: ...ecially 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 a...

Страница 16: ...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...

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