Troy Built Models Aichi D3A1 User manual

Aichi D3A1
Specification:
Length: 1540mm(60.6＂)
Wing span: 2057mm(81＂)
Wing area: 76.1sq.dm(8.2sq.ft)
Wing loading: 99.9g/sq.dm(32.8oz/sq.ft)
Flying weight: 7.6kg(16.7lbs)
Radio: 6ch & 7servos
Engine: 120 4-cycle
C.G: 135mm
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!

4-cycle .180
15″X7
6
76
6
6 channel radio for aiplane is highly recommended for this model.
9
Optional parts: rubber wheel with metal hub.
We strongly recommen you use the thread lock for all the screws when you build your model.
Spinner nut

Clevis
Retainer
Rod (2x300mm)
Screw (2x10mm)
8
8
2
2
2
2
2
2
Clevis
Rod (2x300mm)
Retainer
TP Screw (2.3x12mm)
Pin hinge(24x24mm)
Screw (3x40mm)
Washer(3x15mm)
2
Washer(3x15mm)
Lock Nut (3mm )
8
Pin hinge(24x24mm)
Make sure hinges are
mounted in the same line.
1mm
Aileron
Tailing
edge
Make sure they are in
the right position while
installing.
Keep about 1mm width space between aileron
and trailing edge.
Securely glue together. If coming off during flights, you 'll
lose control of your airplane which leads to accidents!
Fix the aileron servo to the serve tray with epoxy.
Install the nylon control horn and connect the linkage.
Apply instant type CA glue to appropriate position of
aileron and pin hinge.
Apply instand type CA glue to appropriate position of
trailing edge and pin hinge.
1
2
3
4
5
1
Accessory list for the coming installation steps.

1.5mm
3mm
Rod (2x300mm)
Clevis
Washer(3x15mm)
Washer
Lock Nut (3mm )
Screw (3x40mm)
4
2
Wooden Block(20x20x8mm)
Servo tray(68.5x56.5x2mm)
8
TP Screw (2.3x12mm)
1
Rib template (2mm ply)
4
Wood dowel (6x30mm)
Fix the flap servo to the servo tray with epoxy.
Main wing joiner
2
TP Screw (2.3x12mm)
8
TP Screw (2.3x12mm)
6mm
6mm
4
Wood dowel (6x30mm)
1
Rib template (2mm ply)
Rib template (2mm ply)
Main wing joiner
Main wing joiner
2
Main wing joiner
Rib template (2mm ply)
TP Screw (2.3x12mm)
Secure the servo.Install the nylon control horn
and connect the linkage. Assemble the flap servo to the main wing with screws.
According to the rib template drill holes in the outer
wings and epoxy wood dowel in them.
According to the rib template drill holes to the center wing.
6
7
8
9
10
2
Accessory list for the coming installation steps.
AILERON
FLAP
AILERON
30mm
FLAP
20mm
20mm
Side View
Top View
135mm
Top view
20mm
20mm
RUDDER
Side View
Adjustment.
Centre of Gravity.
Adjustment.
79
78
15
77

Top view
Position for
right diagram.
ELEVATOR
Side View
15mm
15mm
Adjustment.
5mm
2
Plastic tube (5x30mm)
Drill holes to appropriate in the bomb.
Epoxy plastic tube into the holes.
Drill holes to relevant pesition in the centet wing.
Epoxy the bomb to the bottom wing.
90mm
135mm
5mm
20mm
Washer (3x6mm)
Washer (3x6mm)
1
1
Screw (3x30mm)
Screw (3x30mm)
Fix the fairing part to the fuselage with screw.
72
73 76
75
74
14
71
Securely glue together. If coming off during flights, you 'll
lose control of your airplane which leads to accidents!
A A"
A = A"
2
Steel wire (1.7x210mm)
2
2
2
2
2
2
Clevis
Rod (2x300mm)
Retainer
Screw (3x45mm)
Washer(3x15mm)
2
Washer(3x15mm)
Lock Nut (3mm )
10
Pin hinge(36x20x1mm)
173o
Connect the two flaps with metal wire,keep some space
between them and epoxy the pinned hinges to the flaps
as below.
2mm
Keep some space
between the flaps.
2
Steel wire (1.7x210mm)
Steel wire (1.7x210mm)
10
Pin hinge(24x24mm)
Flap
1mm
Make sure they are in
the right position while
installing.
Trailing
edge
Keep some space about 1mm width between
trailing edge and flap.
2
Wood dowel (6x50mm)
Reinforcement Plate 2
Epoxy main wings to the centre wing by main wing
joiners.
B=B'
A=A'
A`A
B`
B
The sketch when the wings assemble finished.
Epoxy the flaps to the wings as illustration.
Securely glue together. If coming off during flights, you 'll
lose control of your airplane which leads to accidents!
2
2
Blind Nut (6mm)
Screw (6x50mm)
13
12
14
15
11
3
Accessory list for the coming installation steps.

Rod (2x300mm)
Clevis
Washer(3x15mm)
Washer
Lock Nut (3mm )
Screw (3x45mm)
Retainer
3mm
6mm
2
Wood dowel (6x50mm)
97mm
6mm
97mm
7.2mm
Blind Nut
35mm 120mm
Screw(6x50mm)
2
Screw(6x50mm)
Reinforcement Plate
Reinforcement Plate 2
Epoxy the dowel on the leading edge of wing.
Assemble the arms in the flaps the servo arms to them
with rods as below.
Trim two holes to pull the servo extension
lines and fuel tube from the holes.
200mm
50mm
Center
line
2
Blind Nut (6mm)
Drill holes in the fuselage for installing the wings.
Drill holes in the appropriate position through the wing
to fuselage,set blind nut in the fuselage.
Put the reinforcement plate on the holes and fix the
wings to the fuselage with screws as illustration.
17
18
19
20
16
4
21
12
TP Screw (2.3x8mm)
Ply (15x15x3mm) 12
1.5mm
TP Screw (2.3x8mm)
Epoxy plies inside the fuselage under the cowing and
mount the cowing with TP screw as illustration.
2
Dummy flap
15mm
45mm
3mm
4.2mm
Blind Nut
1
1
Wooden Block(66x60x9mm)
Wooden Block(66x60x9mm)
Epoxy plies under the canopy and assemble the
canopy to fuselage with screw.
Trim slots in right position in the bottem wing.
70mm
100mm 123mm 123mm
Epoxy the dummy flaps to the wings.
3mm
Epoxy the dummy parts to the appropriate position
in the mid wing.
Epoxy the wooden block to the appropriate position in the
fuselage,drill holes through the the wooden block from the
dummy fairing and set blind nut in the big hole as illustration.
Epoxy the fairing part to the fuselage.
fairing part
2mm
16mm
66
65
13
69
67
70
68

TP Screw (3x20mm)
4
4
WssherTP (3x6mm)
1.8mm
TP Screw (3x20mm)
4
4
WssherTP (3x6mm)
155mm
15mm
147mm 180mm
12
TP Screw (2.3x8mm) 1
Canopy
Ply (15x15x3mm) 12
2
Dummy flap
Add a rubber ring to the
clevis for insuring safety
Assembly of the switch servo.
Linkage Stopper
Washer (2mm)
Nut (2mm)
Set screw (3x4mm)
1
1
1
1
2
Plastic tube (5x30mm)
1
Wooden Block(66x60x9mm)
1
Former
fairing part 1
Washer (3x6mm) 1
1
Screw (3x30mm)
Former
Mounting of the receiver and the battery.
Elevator servo
Throttle servo
Switch servo
Rudder servo
Assemble the cowl to the fuselage with TP screws.
Epoxy the wooden form to appropriate in the cowling.
Cut off the surplus parts along the shaded
line of the canopy.
61
62
63
64
12
60
Accessory list for the coming installation steps.
8
TP Screw (3x20mm)
Landing gear straps 8
8
TP Screw (3x10mm)
2
4
Collar (6mm)
Wheel (140mm)
Landing gear(6mm) 1
2
2
Wooden Block(110x82x9mm)
Wheel pants
TP Screw (3x20mm)
TP Screw (3x20mm)
1.5mm
Landing gear 1
8
TP Screw (3x20mm)
Landing gear straps 4
Collar (6mm)
Wheel (140mm)
2
Wooden Block(110x82x9mm)
Mount wheel pant and tire.
8
TP Screw (3x10mm)
Landing gear straps 4
1.5mm
1.5mm
TP Screw (3x10mm)
1.5mm
6mm
10mm
Wooden Block(110x82x9mm)
20mm
35mm
15mm 45mm
Mount landing gear on the underside of wing.
According to the back steps,epoxy the Wheel pants
to the appropriate place.
Mount wheel pant and tire.
Attach landing wire to wheel pant steadily.
22
23
24
25
26
5
Accessory list for the coming installation steps.

4mm
2
1
Steel wire (0.5x3000mm)
U-style wire (150x3mm)
1
Stab joiner (12x280mm)
4
Wood dowel (4x30mm)
1
Rib template (2mm ply)
6
Pin hinge(24x24mm)
4mm
Rib template (2mm ply)
Stab joiner (12x280mm)
1
Rib template (2mm ply)
1
Stab joiner (12x280mm)
4
Wood dowel (4x30mm)
Wood dowel (4x30mm)
Rib template (2mm ply)
6
Pin hinge(24x24mm)
3mm
1
U-style wire (150x3mm)
U-style wire (150x3mm)
2
Steel wire (0.5x3000mm)
2
2
Clevis
Copper joiner
2
2
Screw (2x10mm)
Nut (2mm )
2
Washer(2x5mm)
Set the U-style wire through the tail of fuselage as
below.
According to the rib template drill holes
in the stabilizer and fuselage!
Drill holes in the stabilizer root base on rib template
and epoxy the wood dowel in them.
According to the rib template drill holes to the tail of
fuselage as below.
Epoxy the horizontal to fuselage and take care to
keep all the surface clean.
Glue the pin hinges to the elevator and trim slot in the
right position for fitting the U-style wire.
27
28
29
30
31
6
Accessory list for the coming installation steps.
Linkage Stopper
Washer (2mm)
Washer (2mm)
Nut (2mm)
Set screw (3x4mm)
Washer (2mm)
Set screw (3x4mm)
1
1
1
1
Fuel supply line
Fuel spray line
Air pressure line
Mount the fuel tank into the fuselage.
Assembly of the fuel tank.
Assemble the servos and switch .
Assemble the servo to fuselage.
Fuel tank (550cc) 1
Set Screw (3x4mm)
Set Screw (2mm)
Rod (2x400mm)
Set Screw (2mm)
Washer (2mm)
Linkage Stopper
1
1
1
1
1
4
4
Washer (4x8mm)
4
Rod (2x400mm)
Blind Nut (4mm)
Screw (4x25mm)
Set Screw (3x4mm)
Assemble the throttle linkage.
Install the engine.
55
56
58
59
11
54 57

Washer (4x8mm)
Washer (4x8mm)
Screw (4x35mm) Screw (4x25mm)
Nut (4mm)
Spring Washer (4mm)
4mm
4
Blind Nut (4mm)
1
Engine mount (68x105mm)
Linkage Stopper
4
4
12
4
Washer(4x8mm)
Screw (4x35mm)
Spring Washer (4mm)
Nut (4mm)
2
4
Screw (4x25mm)
2
Plastic tube (2x400mm)
Fuel tank (550cc) 1
157 mm
In case of 2-cycle & 4-cycle engine.
Assemble the engine.
5.2mm
Blind Nut
4
Blind Nut (4mm)
Collar
Collar
Tail landing gear
6
TP Screw (2.3x8mm)
Ply (15x15x3mm) 6
TP Screw (2.3x8mm)
1.5mm
Epoxy plies to appropriate position in the fuselage.
Then assemble the wheel as illustration.
Collar (3mm) 2
2o
Tow degree downthrust
Ply
The front view of the engine install completion.
The side view of the engine install completion.
Drill four holes at the diameters as shown
for engine mount.
50
51
52
53
10
Accessory list for the coming installation steps.
49
C=C'
D=D'
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!
C
D
C'
D'
1mm
Elevator
Make sure they are in
the right position while
installing.
Trailing
edge
Securely glue together. If coming off during flights, you 'll
lose control of your airplane which leads to accidents!
2x20mm
2
2
Clevis
Copper joiner
2
2
Screw (2x10mm)
Nut (2mm )
2
Washer(2x5mm)
Steel wire
Copper joiner
Lock Nut (2mm )
Screw (2x10mm)
Ball joint
Washer(2x5mm)
Install the nylon control ring for switch and
connect the linkage.
Assemble horizontal tail, vertical tail,
tail gear separately.
Keep some space about 1mm width between the
elevator and horizontal tail edge.
Glue the elevator to the stabilizer by CA and epoxy. Assemble the elevator servo to the appropriate
position in the fuselage.
The sketch map for the wires of elevator servo
in the fuselage.
33
32
34
36
7
37
35
Accessory list for the coming installation steps.

1
1
Tail landing gear(3mm)
Tail wheel (45mm)
TP Screw(3x10mm) 2
6
TP Screw (2.3x8mm)
Ply (15x15x3mm) 6
1
1x20mm
3x6mm
Ply3mm
1.5mm
TP Screw (3x10mm)
3x10mm
25mm
50mm
1
1
Pin hinge
Pin hinge
Metal arms
2
Steel wire (0.5x3000mm)
Pin hinge 31
Wooden Block (3mm Ply)
Wooden Block (3mm Ply)
Wooden Block (3mm Ply)
Collar (3mm) 2
Washer (3x6mm) 2
Washer (3x6mm)
The sketch map when assemble the tail landing
gear to the wheel steeling mount.
Tail landing gear(3mm)
Let the tail landing gear go through the fuse tail until to
the proper position,and cut off the surplus parts of the
landing gear as illustration.
Epoxy a wooden block to inner fuse tail for helping
fix the landing gear mount.
Trim a slot in the vertical fin for epoxying the pin hinge
of tail landing gear in it.
Fix the tail landing gear mount with TP screws.
Tail landing gear mount
Tail landing gear mount
38
39 42
8
40
41
Accessory list for the coming installation steps.
1mm
Rudder
Tailing
edge
Cut away the rubber tube when
the epoxy glue dried.
Make sure they are in
the right position while
installing.
Pin hinge 3
Make sure hinges are
mounted in the same line.
25mm
49mm
49mm
2.5mm
Epoxy pin hinges to rudder.
2.5mm
2
2
Clevis
Copper joiner
2
2
Screw (2x10mm)
Nut (2mm )
2
Washer(2x5mm)
Steel wire
Copper joiner
Lock Nut (2mm )
Screw (2x10mm)
Ball joint
Washer(2x5mm)
3mm
Rudder servo
Rudder servo
Elevator servo
Elevator servo
2
Steel wire (0.5x3000mm)
Drill holes to appropriate position in the vertical tail
and epoxy the rudder to the vertical tail steadily.
Epoxy the pin hinge to the rudder steady.
Install the rudder servo.
Install the rudder servo in the fuselage.
The sketch map of the steel wires run through
in the fuselage.
44
45
46
47
48
9
43