Troy Built Models DC-3 User manual

DC-3
Specification:
Length :1790 mm(70.5")
Wing Span :2640 mm(103.9")
Wing Area :77.39 sq. dm
8.33 sq. ft
Wing Loading :116.3 g/sq. dm
38.1 oz/sq. ft
Flying Weight :9 kg(19.8 lbs)
Radio :6ch&12 servos
Engine :70 2-cycle
91 4-cycle
SAFETY PRECAUTIONS
INSTRUCTION MANUAL
First-time builders should seek advice from people having building
experience.If misused or abused,it can cause serious bodily injury
and 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.
(The people under 18 years old is forbidden from flying this model)
This R/C airplane is not a toy!

: 2-cycle .90-160
13"x7
Spinner nut
6
(with 12 servos),
6
6
6 channel radio for aiplane is highly recommended for this model.
For float plane.160 size engine(2C)is
highly recommended
Warning
Remove the covering with proper
pressure to cut through only the covering itself.Otherwise,
cutting down into the balsa structure may weaken the
model part and cause accident.
The pre-covered film on ARF kits may wrinkle due to
variations of temperature.Smooth out as explained right.
Pre-cover the covering with clean cloth!
Start at low setting. Increase the setting if
necessary.If it is too high,you may damage
the film.
Iow setting
with cover(cloth)

1mm
Aileron
Trailing
edge
Make sure they are in
the right position while
installing.
Securely glue together. If coming off during flights, you 'll
lose control of your airplane which leads to accidents!
Make sure hinges are
mounted in the same line.
8
Pin hinge(24x24mm)
8
6
2
2
2
4
2
2
2
2
Clevis
Rod (2x300mm)
Retainer
TP Screw (2.3x12mm)
Wooden Block(20x20x8mm)
Servo tray(68.5x56.5x2mm)
Pin hinge(24x24mm)
Screw (3x35mm)
Washer(3x15mm)
2
Washer(3x15mm)
Lock Nut (3mm )
Clevis
Retainer
Rod (2x300mm)
Screw (2x10mm)
Install the nylon control horn and connect the linkage.
Install the servo as the illustration below
Apply instant type CA glue to aileron and pin hinge.
Keep 1mm width space between aileron and trailing edge.
Assemble the aileron to main wing with instant
type CA glue.
1
2
3
4
5
1
Accessory list for the coming installation steps.

6
8
2
2
2
4
2
2
2
2
Clevis
Rod (2x300mm)
Retainer
TP Screw (2.3x12mm)
Wooden Block (20x20x8mm)
Servo tray(68.5x56.5x2mm)
Screw (3x35mm)
Washer(3x15mm)
2
Washer(3x15mm)
Lock Nut (3mm )
Pin hinge(36x20x1mm)
TP Screw (2.3x12mm)
3mm
1.5mm
Securely glue together. If coming off during flights, you 'll
lose control of your airplane which leads to accidents!
6
Pin hinge(36x20x1mm)
Rod (2x300mm)
Clevis
Washer(3x15mm)
Washer
Lock Nut (3mm )
Screw (3x35mm)
Flap
1mm
Make sure they are in
the right position while
installing.
Trailing
edge
Screw (2x10mm)
Secure the servo.Install the nylon control horn and
connect the linkage.
Epoxy the pin hinges to the flap.
Leave some space with width of 1mm between
trailing edge and flap.
Be careful to ensure the moving parts of the hinges
are able to move freely. Epoxy the flap to the main wings.
Install the servo as the illustration below
7
68
9
10
2
Accessory list for the coming installation steps.
Top view
Side View
25mm
25mm
RUDDER
120mm
120mm
3-way
pressure inlet
Air tank
3-way
pressure inlet
Switch
Air inlet
Quick release connector
Make sure to assemble retracts as instructed below.
Three wheel retract system
Quick release connector
3-way
pressure inlet
3-way pressure inlet 3
1
Air tank
1
Air inlet
2
1
1
Air line (800mm)
2
Air inlet
Clevis
Rod (2X300mm)
1
1
1
Retainer
TP Screw(2x14mm) 2
Please insure the sealing of the
retract system before flight .
Strut
Switch
The status when the
gear up
Pull out length of 8mm
to make gear down
Air valve Air valve
Adjustment. Centre of Gravity.
76
75
15

Top view
Position for
right diagram.
ELEVATOR
Side View
20mm
20mm
AILERON
FLAP
AILERON
40mm
FLAP
20mm
20mm
Side View
2
PVC Part
2
PVC Part
14
PVC Part
PVC Part 1
Cut off the shaded portion.
Adjustment.
Mount the receiver and the battery to the fuselage.
Epoxy the canopy to the fuselage as below.
Adjustment.
70
71
73
72
14
74
Accessory list for the coming installation steps.
TP Screw (2.3x12mm)
3mm
1.5mm
6
4
Wooden Block (20x20x8mm)
2
Servo tray(68.5x56.5x2mm)
4
Wooden Block (20x16x2mm)
Pin hinge(36x20x1mm)
8
2
2
2
2
2
Clevis
Rod (2x300mm)
Retainer
TP Screw (2.3x12mm)
Screw (3x35mm)
Washer(3x15mm)
2
Washer(3x15mm)
Lock Nut (3mm )
2
Rod (2x300mm)
Clevis
Washer(3x15mm)
Washer
Lock Nut (3mm )
Screw (3x35mm)
6
Pin hinge(36x20x1mm)
Flap
1mm
Make sure they are in
the right position while
installing.
Trailing
edge
Clevis
Retainer
Rod (2x300mm)
Screw (2x10mm)
Screw (2x10mm)
Install the nylon control horn and connect the linkage. Epoxy the flap to the main wings.
Secure the servo.Install the nylon control horn and
connect the linkage.
Keep some space of 1mm width between the flap
and trailing edge.
Securely glue together. If coming off during flights, you 'll
lose control of your airplane which leads to accidents!
Epoxy the flap to the mid wing.
12
13
11
15
3
14
Accessory list for the coming installation steps.

TP Screw (2.3x12mm)
3mm
1.5mm
3o4o
Blind Nut (4mm)
2
Engine mount (52x92mm)
Linkage Stopper
8
8
24
8
Washer(4x8mm)
Screw (4x35mm)
Spring Washer (4mm)
Nut (4mm)
4
8
Screw (4x30mm)
4
Plastic tube (2x400mm)
Fuel tank (488cc) 2
8
2
Wooden Block (20x20x4mm)
6
Wooden Block (20x20x3mm)
3o
2
Wooden Block (20x20x4mm)
6
Wooden Block (20x20x3mm)
ply 6mm
ply 3mm
ply 3mm
ply 7mm ply 3mm
ply 4mm
2
Screw (4x40mm)
2
Screw (4x40mm)
Screw (4x40mm)
Clevis
Retainer
Rod (2x300mm)
Rod (2x300mm)
Clevis
Washer(3x15mm)
Washer
Lock Nut (3mm )
Screw (3x35mm)
Screw (2x10mm)
Screw (2x10mm)
123 mm
The side view when the engine install completion.
Install the nylon control horn and connect the linkage.
Install the servo as the illustration below
Secure the servo.Install the nylon control horn
and connect the linkage.
Please read the illustration below carefully before
assemble the engine to fuselage.
17
18
19
20
4
16
Accessory list for the coming installation steps.
16
TP Screw (2.6x14mm)
Landing gear straps 8
4
Wooden Block(40x30x17mm)
Landing gear(5mm) 1
Landing gear(5mm) 1
Wheel (100 mm)
2
8
TP Screw (2.6x14mm)
TP Screw (2.6x14mm)
TP Screw (2.6x14mm)
16
TP Screw (2.6x14mm)
TP Screw (2.6x14mm)
Elevator servo
Rudder servo
Switch
Air tank
Elevator servo
Washer(3x15mm)
Washer
Screw (3x35mm)
Rod (2x300mm)
Clevis
Washer(3x15mm)
Washer
Lock Nut (3mm )
Screw (3x35mm)
Assemble the wheel to the retract.
The structure sketch map in the fuselage.
The sketch map of the servos install completion.
Connect the linkage rod to the horn.
Assemble the retract to the side fuselage.
67
66
65
13
69
Accessory list for the coming installation steps.
68

18mm
Securely glue together. If coming off during flights, you 'll
lose control of your airplane which leads to accidents!
Steel wire
Copper joiner
Aluminum tube Lock Nut (2mm )
Screw (2x10mm)
Ball joint
Rod (2x300mm)
Lock Nut (2mm )
Screw (2x10mm)
Ball joint
Washer(2x5mm)
2
2
Clevis
Aluminum tube(3x6mm)
2
2
Screw (2x10mm)
Nut (2mm )
2
Copper joiner
2
Washer(2x5mm)
2
2
2
Clevis
Copper joiner
Aluminum tube(3x6mm)
2
2
Screw (2x10mm)
Nut (2mm )
2
Washer(2x5mm)
Washer(2x5mm)
2.5mm
The position of the control horn in elevator
The sketch map of the elevator servo.
Install the rudder servo in the fuselage
Assemble the rudder to the vertical tail with AB glue.
The sketch map of the rudder servo. Install the elevator servo in the fuselage.
61
62
63
64
12
60
59
5.2mm
Blind Nut
4
Blind Nut (4mm)
Washer (4x8mm)
Washer (4x8mm)
Washer (4x8mm)
Screw (4x35mm)
Screw (4x30mm)
Nut (4mm)
Spring Washer (4mm)
4mm
Set Screw (3x4mm)
Set Screw (2mm)
Rod (2x400mm)
Fuel supply line
Fuel spray line
Air pressure line
5mm
Set Screw (2mm)
Washer (2mm)
Linkage Stopper 2
Set Screw (3x4mm)
2
2
2
Assemble the engine as below.
Assemble the accelerator push rod to the engine.
The sketch map of the the push rod assemble
completion
Assembly of the fuel tank.
Drill seven holes as show for engine mount.
The sketch map of the fuel tanks and the
engines connect completion.
22
23
24
25
26
5
21

6
TP Screw(2.3X8)
1.5mm
Retainer
1
Retainer
4
Washer(2x5mm)
2
18
TP Screw (2.3x8mm)
Clevis 2
1
Retainer
Fiberglass pushrod
(3x890mm)
Rod (2X300mm) 1
2
Copper joiner
2
2
2
2
2
Clevis
Screw (3x35mm)
Washer(3x15mm)
2
Washer(3x15mm)
Lock Nut (3mm )
4
4
4
Clevis
Copper joiner
Aluminum tube(3x6mm)
4
4
Screw (2x10mm)
Nut (2mm )
Pin hinge(2.5x48mm)
1mm
Rudder
Tailing
edge
Cut away the rubber tube when
the epoxy glue dried.
Make sure they are in
the right position while
installing.
Make sure hinges are
mounted in the same line.
2.5mm
2
Pin hinge(2.5x48mm)
3mm
15mm
60mm
30mm
2mm
6mm
Steel wire
Aluminum tube
Keep some space of 1mm width between the rudder
and the vertical tail.
Apply instant type CA glue to rudder and pin hinge
and glue them together.
Assemble the tail wheel covering with TP screw.
The inner structure of the tail landing gear.
The sketch map of the the tail wheel install completion.
56
54
57
55
11
58
Accessory list for the coming installation steps.
16
TP Screw (3x20mm)
22
TP Screw ( 2.3x8mm)
22
TP Screw ( 2.3x12mm)
2
Screw(6x50mm)
Wood dowel (468x50x3mm) 2
2
6
Wood dowel (6x50mm)
Ply (15x15x3mm) 12
Blind Nut (6mm)
Linkage Stopper
Washer (2mm)
Washer (2mm)
Nut (2mm)
Nut (2mm)
Set screw (3x4mm)
Set screw (3x4mm)
2
2
2
2
1.5mm
Fuel tank (488cc) 2
A
B
A’
B’
A=A’
B=B’
The sketch map when landing install completion.
4
Wood dowel (6x30mm)
1
Rib template (2mm ply)
Cut off the shaded portion in the Mid wing.
Epoxy the tanks to the appropriate position.
Install the servo.
Assemble the throttle servos in the fuselage.
28
29
30
31
6
27
Accessory list for the coming installation steps.

TP Screw(3x20mm)
Washer (3x6mm) 4
4
Collar
Collar
Tail landing gear
Wooden Block (45x20x10mm) 1
2.6mm
Securely glue together. If coming off during flights, you 'll
lose control of your airplane which leads to accidents!
1
Stab Joiner(16x300mm)
1
Nose arm
(3mm)
Collar (3mm) 2
1
1
Tail landing gear(3mm)
Tail wheel (45mm)
Wooden Block (45x20x10mm) 1
Clevis 1
1
Retainer
6
TP Screw (2.3x8mm)
2
Aluminum tube(3x6mm)
Rod (3x210mm) 1
Rod (2X200mm) 1
TP Screw(3x20mm)
Washer (3x6mm)
4
4
2
Steel wire (0.5x1500mm)
3mm
1X20mm
6X20mm
30mm
210mm
Drill a hole to the appropriate position as below
and joint the ally nose arm.
Assemble the tail landing gear
Assemble the tail wheel steering mounts.
Make sure the horizontal tail are cleanly before epoxy it to
fuselage and make sure it be assemble to the right position .
Drill slots and assemble the rudder metal wire through the
fuselage as illustration below.
49
50
51
53
10
52
Polish the surface flat.
Accessory list for the coming installation steps.
16
TP Screw (3x20mm)
10
TP Screw ( 2.3x8mm)
1.5mm
12
TP Screw (2.3x8mm)
1.5mm
Ply (15x15x3mm) 12
1.5mm
A = A"
B = B"
A
A"
B"
B
Drill 4.2mm holes at the place
of main wing.
Install the wing to the fuselage
with 4mm screws as shown in
the diagrams below.
The standard sketch map when the main wing install
completion.
6mm
Rib template (2mm ply)
Rib template (2mm ply)
According to the rib template drill holes in one wing and
epoxy wood dowel in them.
According to the rib template drill holes in the wings and
epoxy wood dowel in them.
6mm
4
Wood dowel (6x30mm)
1
Rib template (2mm ply)
The working sketch map of the retract.
Assemble the retract to the right position .
Fix the wheel pants with TP screw.
Trim the cowling for engine and muffler.
Assemble the cowling.
33
34
35
36
37
7
32

Make sure to glue securely.
If not properly glued, a failure in flight may occur.
Temporarily fasten down the main wing and
check its correct position.
Securely glue together.If coming off during flights,
you'll lose control of your airplane which leads
to accidents!
DD"
C
C"
C = C"
D = D"
6
Pin hinge(24x24mm)
Make sure hinges are
mounted in the same line.
Please notice the illustration below when epoxy the
pin hinges to the rudder.
1mm
Elevator
Tailing
edge
Make sure they are in
the right position while
installing.
Keep 1mm width space between horizontal tail and
elevator.
Securely glue together. If coming off during flights, you 'll
lose control of your airplane which leads to accidents!
4mm
4
Wood dowel (4x30mm)
1
Rib template (3mm ply)
4mm
Assemble the elevator to the horizontal tail by CA glue.
The standard sketch map when the horizonal install completion.
Drill two holes at the stabilizer root base on rib template
and epexy the metal dowel in them.
A ccording to thr rib template drill holes to the tail of
fuselage as below.
43
45
46
9
44 47
48
70 mm
2
Wood dowel (6x50mm)
70 mm
2
2
Blind Nut (6mm)
Screw(6x50mm)
1
Stab Joiner(16x300mm)
6
Pin hinge(24x24mm)
Accessory list for the coming installation steps.
6.2mm
6.2mm
Blind Nut
6mm
4
Matal douel (4x30mm)
1
Rib template (3mm ply)
6mm
Rib template (2mm ply)
Drill holes to the appropriate position in the mid wing .
Mount the wing to the fuselage with blind nut and screw.
Drill holes to relevant position in the fuselage as below.
Drill holes in the mid wing and epoxy the wood dowel
in them as below .
Assemble the wing to the side fuselage.
According to the rib template drill holes to the mid wing.
39
40
41
42
8
38