CYmodel DE Havilland DHC-4 Caribou User manual

Before commencing assembly,please read these instructions thoroughly.
SAFETY PRECAUTIONS
This radio control model is not a toy!
lFirst-time builders should seek advice from people having building
experience in order toassemble the model correctly and to produce
its performance to full extent. ,
lAssemble this kit only inplaces out of childrens reach!
lTake enough safety precautions prior to operating this model.
,
You are responsible for this models assembly and safe operation!
lAlways keep this instruction manual ready at hand for quick
reference,even after completing the assembly.
lCould cause serious injury or even death
SPECIFICATION
DE Havilland DHC-4 Caribou
Thank you for choosing CYmodel
Global : www.cymodel.com
Australia : www.austars-model.com
Italia : www.biellaexpress.com
Instruction Manual
Designed and Manufactured by : CYmodel Http : // www.cymodel.com
Item Nr: Cy8037
Wing span.............. 2490 mm (98 in)
2
Wing area................60.4 dm (1936 sq.in)
Empty weight.........7 kg
Total length............1860 mm (73.2 in)
Engine.......................20 cc gas engine ( a pair)
Radio.........................5 channels 10 servos

22
REQUIRED FOR OPERATION (Purchase separately)REQUIRED FOR OPERATION (Purchase separately)
TOOLS REQUIRED ( Purchase separately)TOOLS REQUIRED ( Purchase separately)
BEFOREYOU BEGINBEFOREYOU BEGIN
Sharp Hobby Knife Phillips Screw Driver Awl
Needle Nose Pliers Wire Cutters Scissors
Read through the manual before you begin ,so you will have an overall idea of what to do.
Check all parts .if you find any defective or missing parts .contact your local dealer.
Symbols used throughout this instruction manual,comprise.
11
22
33
.
.
.
Warning!
£¡
Cut off shaded portion.
Ensure smooth non-binding
movement while assembling.
Must be purchased
separately!
Pay close attention
here!
Drill holes with the specified
Diameter(here:2mm)
2mm
Assemble left and right
Sides the same way.
Apply instant glue
(CA glue,super glue).
Apply epoxy glue.
BA
Cut off excess.
!
Do not overlook this symbol.
11
Aminimum 5 channel radio for airplanes (with 10 servos).
And dry batteries.
CAUTION: Only use a minimum 5 channel radio for
airplanes! (No other radio may be used!)
!
12 AA-size Batteries
Aminimum 5 channel
transmitter for airplanes.
22
For handing the radio properly.refer to its instruction manual.
Engine and Muffler
Muffler
Glow plug
33
Purchase a propeller that
will match your engine
44
Silicone Tube Fuel Filter
55
required for engine starting Glow engine fuel only.
WARNING: Normal gasoline cannot
be used with glow engines.
!
Fuel Pump Plug Wrench
33
Glue
66
Instant glue Epoxy Glue
33
Other equipment for enhancing
airplane operation & perormance
77
12V Battery (for starter)
Engine Starter
Propeller splinner
MA
20 cc gas engine (a pair)
odel irplane engine

!
3
2
Install the aileron
1
5
4
33
Install the flap
Install the aileron servo
Install the aileron servo
Install the flap
Accessory list for this page.
BA
33
L
R
BA
- - - - - - - 4
Horn
- - - - - - 4
Rod adjuster
Connectingrodhead
- - - - 4
- - - - 4
2X10mm Screw
- - - - - - - 4
1.8X85mm Rod
- - - - - - 2
2X28mm Screw
- - - - - 12
Securely glue together. If comingoff duringflights,you'll
lose control ofyour airplane whichleads to accidents!
Warning!
- - -6
Pin hings
2mm
- - -6
Pin hings
Securely glue together. If comingoff duringflights,you'll
lose control ofyour airplane whichleads to accidents!
Warning!
1.8X65mm Rod
- - - - - - 2
Aileron
servo
- - -4
Pin hings
BA
Securely glue together. If comingoff duringflights,you'll
lose control ofyour airplane whichleads to accidents!
Warning!
- - - - - - - 4
Horn
- - - - - - 4
Rod adjuster
Connectingrodhead
- - - - 4
- - 4
2X10mm Screw
- - - - - - - 4
1.8X85mm Rod
- - - - 2
2X28mm Screw
- - - - - 12
1.8X65mm Rod
- - - - - - 2
- - -14
Pin hings
L
R
L
R
L
R

!
8
710
99
4
6
Accessory list for this page.
Assemble the wing to the fuselage with
screw and blind nut
Install the flap servo
Epoxy the main wing to the mid
through the main joiner
- - - - - - - 2
Horn
- - - - - - 2
Rod adjuster
Connectingrodhead
- - - - 2
- - - - 3
2X10mm Screw
- - - - - - 2
2X28mm Screw
- - - - - 6
1.8X65mm Rod
- - - - 2
Flap
servo
BA
L
R
4.2mm
5.2mm nylon Collar
3X3mm Screw
- - - - 4
- - - - 4
3X18mm screw
- - - - - - 8
Cap screw
- - - 2
4mm Washer
- - - - - - 2
5.2mm Collar
- - - - 4
4X35mm Cap screw
- - - - - - 2 4mm Lock nut
- - - - - - - - 2
Install the flap servo
Main wing joiner
- - - - 2
Assemble the wheel to landing gear and
epoxy the landing gear to the wing steadily
- - - - - - - 2
Horn
- - - - - - 2
Rod adjuster
Connectingrod head
- - - - 2
- - - - 3
2X10mm Screw
- - - - - - 2
2X28mm Screw
- - - - - 6
1.8X65mm Rod
- - - - 2
Main wing joiner
- - - - 2
5.2mm nylon Collar
3X3mm Screw
- - - - 4
- - - - 4
3X18mm screw
- - - - - - 8
Cap screw
- - - 2
5.2mm Collar
- - - - 4
4mm Washer
- - - - - - 2
4X35mm Cap screw
- - - - - - 2
4mm Lock nut
- - - - - - - - 2

!
13
12 15
14
11
Accessory list for this page.
Drill holes in the wings and set the wood
dowel in them as below
In the fuselage of the screw assembly
Drill holes to relevant position in the fuselage
M5X25 mm Screw
- - - - 1
55
M5X60 mm Screw
- - - - 2
5mm Blind Nut
- - - - - - 2
5mm Washer
- - - - - 2
5.2mm
- - - - 4
Template
7mm
- - - - 1
Template
7mm
BA
Nylon dowel
- - - - 2
Assemble the wings to the fuselage with screw
and blind nut as below
Assemble the stabilizer tto the fuselage
M5X25 mm Screw
- - - - 4
Nylon dowel
- - - - 2
M5X60 mm Screw
- - - - 2
5mm Blind Nut
- - - - - - 2
5mm Washer
- - - - - 2

!
18
17 20
19
66
16
Accessory list for this page.
Assemble the servos and switch in the fuselage
Glue the elevator to the stabilizer byA/B and epoxy
Assemble the rudder servo
BA
3mm
BA
- - -3
Pin hings
- -6
Pin hings
BA
- - - - 2
Wooden Block
BA
Make sure to glue securely.
If not properly glued,a failure
in flight may occur
Securely glue together, If coming off
during flihts .you’ll lose control of your
airplane which leads to accidents!
Temporarily fasten down the main wing
and check its correct position.
Assemble horizontal tail,
vertical tail,tail gear
separately
U-style wire
- - - - 1
Install the U-style wire to appropriate position in the tial of fuselage
and assemble the stabilizer to fuselage as illustration
Securely glue together. If coming off during flights, you will
lose control of your airplane which leads to accidents!
Assembly of the stabilizer
U-style wire
- - - - 1
- - 9
Pin hings
- - - - 2
Wooden Block

!
23
22 25
24
77
21
Accessory list for this page.
2.6 X 8mm Tp screw
- - - - - - 6
3mm Washer
M3X20mm Screw
- - - - 2
- - - - 2
5.2mm nylon Collar
3X3mm Screw
- - - - 2
- - - - 2
3X18mm screw
- - - - - - 4
Cap screw
- - - 2
5.2mm Collar
- - - - 1
Rod
- - - - - - 2
Rod adjuster
- - - - 1
2X10mm Screw
- - - - - - - 2
115mm
3mm Washer
M3 Lock Nut
3mm Blind Nut
4X25mm Screw
- - - - 8
- - - - 8
- - - - - - 8
3X25mm Screw
- - - - 8
- - - - - - 8
Assembly of the engine
- - - - - - - 1
Horn
- - - - - - - 1
Rod adjuster
- - - - 1
- - - - 1
2X10mm Screw
- - - - - - - 1
1.8X85mm Rod
- - - - - - 1
2X28mm Screw
- - - - - 2
5X90mm Screw
- - - - - - 1
850mm steel wire
10mm tube
- - - - - - 2
- - - - - - 4
5mm Lock nut
- - - - - - 2
Rod
- - - - - - 2
Rod adjuster
- - - - 2
2X10mm Screw
- - - - - - - 2
- - - - 2
4.7mm
Elevator.Connect the linkage rod to the horn
Rudder.Connect the linkage rod to the horn
Assemble the wheel to landing gear and
epoxy the landing gear to the wing steadily
Install the front-wheel drive

!
28
27 30
29
88
26
Accessory list for this page.
Assembly of the engine
After confirmingthe
position(see frontof
fuel tank).
Insert and tighten
the screw.
3X20mm Screw
- - - - 1- - - - 1
Assembly of the full tank
2.6 X 12mm Tp screw
- - - - - - 2
Mount fuel tank to the wing
Assembly of the cover with dowel
Nylon dowel
- - - - 4
- - - - 1
Template
3mm
BA
Assembly of the cover with secrw
Nylon dowel
- - - - 4
3mm
- - - - 1
Template

!
33
32 35
34
99
31
Accessory list for this page.
2.6 X 12mm Tp screw
- - - - - - 8
Cut away the surplus parts of canopy
carefully along the shaded line
2.6 X 12mm Tp screw
- - - - - - 9
2.6 X 8mm Tp screw
- - - - - - 8
ANTI-STALLFence
- - - - - - 2
Install the ANTI-STALL Fence
BA
BA
Install nacelle tail block
Assemble the cowling
Receiver
Battery
BA
15x15x75mm wood
2.6 X 12 mm Tp screw
- - - - - - 1
- - - 1
Mount the receiver and battery in the fuselage
2.6 X 8mm Tp screw
- - - - - - 8
15x15x75mm wood
- - - 1

38
37 39
Side view
ELEVATOR
Adjust the travel of each control surface to the
values in the diagrams.
These values fit general flight capabilities.
Readjust according to your needs and flight level.
Top view
36
AILERON
Adjustment.
Top view
Adjust the travel of each control surface to the
values in the diagrams.
These values fit general flight capabilities.
Readjust according to your needs and flight level.
1010
Adjustment.
Never fly before checking the Cg s required position.
In order to obtain the CG specified ,reposition the
receiver and battery.
NEVER fly the model
without well balancing.
Warning!
!
CG
Side view
Rudder
Adjust the travel of each control surface to the
values in the diagrams.
These values fit general flight capabilities.
Readjust according to your needs and flight level.
Top view
110-120mm
Adjustment
Side view
Adjustment.
42mm
42mm
46mm
46mm
100mm
100mm