Troy-Bilt Pilatur PC-21 User manual

Pilatur PC-21
Specification:
Length :2070 mm(81.5")
Wing Span :1800 mm(71")
Wing Area :55.8 sq. dm
6.0 sq. ft
Wing Loading :123.7 g/sq. dm
40.6 oz/sq. ft
Flying Weight :6.9 kg(15.2 lbs)
Radio :6ch&9 servos
Engine :120 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!

: 120 - 4cycle
15"x7
4" Spinner nut
6
(with 9 servos),
6
6
6 channel radio for aiplane is highly recommended for this model.
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.
Apply epoxy glue.
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)

6
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.
Securely glue together. If coming off during flights, you 'll
lose control of your airplane which leads to accidents!
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.
Assemble the aileron to main wing with instant type
CA glue.
Keep some space about 1mm width between aileron
and trailing edge.
Accessory list for the coming installation steps.
Apply instant type CA glue to aileron and pin hinge.
1
2
3
4
5
1
3-way
pressure inlet
Air tank
3-way
pressure inlet
3-way
pressure inlet
3-way
pressure inlet
3-way
pressure inlet
Switch
Air inlet
Strut
Strut
Strut
Quick release connector
Make sure to assemble retracts as instructed below.
Three wheel retract system
Quick release connector
Pressure reduction inlet
Ø1.7mm
Ø0.2mm
The status when the
gear up
Pull out length of 8mm
to make gear down
Air valve Air valve
Pleas notice the inner diameter for each
side of the pressure reduction inlet.
Please insure the sealing of the retract
system before flight .
3-way pressure inlet 5
1
Air tank
1
Air inlet
2
1
1
Air line (3000mm)
2
Quick release connector
Strut
( 90 )
1
Strut ( 110 )
Switch
Clevis
Rod (2X300mm)
1
1
1
Retainer
TP Screw(2.6x14mm) 2

8
2
4
2
6
Rod (2x300mm)
TP Screw (2.3x12mm)
Wooden Block(20x20x8mm)
Servo tray(68.5x56.5x2mm)
Pin hinge(36x20x1mm)
6
Pin hinge (36x20x1mm)
Make sure hinges are
mounted in the same line.
Securely glue together. If coming off during flighs, you 'll
lose control of your airplane which leads to accidents!
2
Screw (3x45mm)
2
2
Clevis
Retainer
2
2
Washer(3x15mm)
Lock Nut (3mm )
TP Screw (2.3x12mm)
2
Washer
1.5mm
3mm
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)
Keep some space about 1mm width between trailing
edge and flap.
Secure the servo.Install the nylon control horn and
connect the linkage.
Accessory list for the coming installation steps.
Epoxy the pin hinges to the flap.
Epoxy the flap and the retract strut covering part to
appropriate position in the main wing as below.Be careful to
ensure the moving parts of the hinges are able to move freely.
Install the servo as the illustration below.
6
7
9
8
2
10
Right view
Side View
30mm
30mm
RUDDER
25mm
25mm
AILERON
Side View
40mm
FLAP
AILERON
FLAP
ELEVATOR
Side View
25mm
25mm
Top view
Position for
right diagram.
Never fly before checking CG’s required position.
In order to obtain the CG specified reposition the
receiver and battery.
124mm
Right view
Side View
30mm
30mm
RUDDER
Epoxy the fixed landing gear to the main wing.
Adjustment.
Adjustment.
The centre of the Gravity.
Adjustment.
Adjustment.
The view of the plane form the 45 degree.
15
79
78
77
80

25mm
25mm
AILERON
Side View
30mm
FLAP
AILERON
FLAP
TP Screw (2.3x12mm)
Wooden Block
TP Screw (2.6x14mm)
Collar (5mm)
Wooden supporter
Install the wheel to the fixed landing gear.
4
Wooden Block(25x15x13mm)
2
7
Collar (5mm)
Wheel (90mm)
Wooden supporter
(41.5x28x26mm)
Landing gear(5mm)
2
1
8
TP Screw (3x20mm )
Landing gear straps
2
Gear door
2
1
Landing gear (5mm)
1
Wheel (75mm)
Wooden supporter
(46x28x14mm) 1
4
TP Screw (2.6x14mm )
6
TP Screw (2.3x12mm)
1
Aluminum part(60x6mm)
Steel wire
Copper joiner
Aluminum tube
Clevis
Add a rubber ring to the
clevis for insuring safety
Collar (5mm)
Collar (5mm)
Collar (5mm)
Collar 5mm 3
Epoxy the fixed landing gear to the main wing.
Adjustment.
Install the wheel to the fixed landing gear.
Epoxy the fixed landing gear to the fuselage.
74
14
76
75
72
73
Accessory list for the coming installation steps.
8
TP Screw (2.3x12mm)
A
A=A’
B=B’
2
Wood dowel (6x50mm)
2
Wood dowel (6x30mm)
2
2
Blind Nut (6mm)
Screw (6x50mm)
1
Gear door
2
Wheel (90mm)
2
LockNut (4mm)
2
PVC
2
Bushing (8X6mm)
1
Reinforcement plate
4
Wooden Block(25x15x13mm)
2
PVC
TP Screw (2.3x12mm)
A’
BB’
Cut off the surplus PVC part carefully along the shaded
line
Cut away the film on the position for the air retract
landing and epoxy the wheel house to relevant position.
1
Rib template (2mm ply)
Main wing joiner 1
1.5mm
3mm
Clevis
Retainer
Rod (2x300mm)
Rod (2x300mm)
Clevis
Washer(3x15mm)
Washer
Lock Nut (3mm )
Screw (3x35mm)
Screw (2x10mm)
Screw (2x10mm)
Install the nylon control horn and connect the linkage.
Secure the servo.Install the nylon control horn and
connect the linkage.
Assembly of the main wings.
3
15
13
11
12 14
Accessory list for the coming installation steps.

TP Screw (3x20mm)
Center
line
Retracts strut
LockNut(4mm)
Bushing (8X6mm)
Wooden Block
1.5mm
200mm
20mm
Note:rubber wheels oleo struts
and retracts are optional.
TP Screw(3x20mm) 4
6mm
2
Wood dowel (6x30mm)
1
Rib template (2mm ply)
Rib template (2mm ply)
6mm
Rib template (2mm ply)
Assemble the gear doors and the wheels to the retracts.
Drill holes for pulling out the servo extension line.
Assemble the retract
Epoxy the PVC parts to the wing tip as below.
According to the rib template drill holes in one wing and
epoxy wood dowel in them.
According to the rib template drill holes to another
main wing.
4
21
20
19
16
18
17
1.5mm
10
TP Screw (2.3x6mm)
Ply (15x15x3mm) 10
1.5mm
5
TP Screw (2.3x6mm)
Ply (15x15x3mm) 5
TP Screw (2.3x6mm)
TP Screw (2.3x6mm)
Epoxy plies under the canopy and assemble the
canopy to fuselage with screw.
Epoxy the plies under the cowing in fuselage and assemble
the cowing to fuselage with TP screw.
Trim the canopy along the shaded line.
Trim the cowling along the shaded line.
Epoxy the exhaust to the cowling from lnner.
Epoxy the PVC decoration to appropriate position asbelovo.
13
71
67
69
66
68
70

Wooden Block(43x28x26mm)
1
Gear door
2
4
Collar (5mm)
Wheel (100mm)
Landing gear 2
1
8
2
TP Screw (3x20mm )
Landing gear straps
(5mm)
4
TP Screw (2.6x14mm)
2
Wooden Block(25x15x13mm)
15
TP Screw (2.3x6mm)
1
Canopy
Ply (15x15x3mm) 15
2
Exhaust
switch servo
Throttle servo
Nose wheel servo
1
Decoration
Add a rubber ring to the
clevis for insuring safety
Accessory list for the coming installation steps.
Mount the receiver and the battery in the fuselage.
The sketch map when the servos install completion.
Install the servo of switch in the fuselage.
Install the servo of switch.
Trim the decoration carefully along the shaded line.
12
64
63 65
61
62
Accessory list for the coming installation steps.
2
Wood dowel (6x50mm)
1
Stab joiner (12x240mm)
4
3
2
Pin hinge(24x24mm)
Pin hinge(2.5x48mm)
Steel wire (0.5x3000mm)
1
U-style wire (3x150mm)
1
100 mm
12 mm
6mm
12 mm
100 mm
6mm
6.2mm
Blind Nut
Tail landing gear(3mm)
1
Wooden Block (6mm Ply)
4
Wooden dowel (4x30mm)
1
Rib template (3mm ply)
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)
Reinforcement Plate 1
9
TP Screw (2.3x6mm)
Ply (15x15x3mm) 9
Screw(6x50mm)
Drill holes to appropiate position in the wings and
epoxy wood dowels in them
Drill holes to relevant position in the fuselage
Mount the wings to the fuselage with screw .
Epoxy the belly pants to main wing and drill holes to
relevant position on the belly pants
Epoxy the main wing hardly together with wing joiner.
Main wing joiner 1
5
26
25
22
24
23
Accessory list for the coming installation steps.

Rudder
Vertical
fin
Cut away the rubber tube when
the epoxy glue dried.
1mm
Make sure they are in
the right position while
installing.
2.5mm
6
Pin hinge(24x24mm)
Make sure hinges are
mounted in the same line.
Metal arms
Rod (3x200mm)
3
Pin hinge(2.5x48mm)
Using rubber tubu cover
the middle of the hinges
before installation in case
the epoxy glue get into.
2.5mm
Make sure hinges are
mounted in the same line.
3mm
82mm
72mm
76mm
3mm
1
Wooden Block (6mm Ply)
1
1
Screw (2x10mm)
Nut (2mm )
1
Copper ball (2mm )
Nut (2mm )
Screw (2x10mm)
Copper ball (2mm )
3mm
160mm
2mm
3mm
Trim the shaded section
keep some space about 1mm width between the
vertical fin and rudder
Apply instant type CA glue to aileron and pin hinge.
Drill holes to the relevant position in the tailing edge
and epoxy the rudder to them.
Epoxy a wooden block at appropriate position in fuselage,
and drillahole in the centre.
Assemble the ball joint to the metal arms.
Drill holes to appropriate position in the rudder and
epoxy the pin hinges in them
6
32
31
30
27
29
28
1
Matal tube (3x600mm)
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
3mm
3mm
Install the throttle servo to appropriate position in the
fuselage.
Epoxy the fuel tank in the fuselage.
Install the switch and the throttle servo
Drill a small hole in appropriate position for throttle.
Assembly of the fuel tank.
The sketch map when the engine install completion.
11
60
58
55
56
57
59

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 (1.7x700mm)
Blind Nut (4mm)
Screw (4x25mm)
Set Screw (3x4mm)
1
Matal douel (3x600mm)
163 mm
5.2mm
Blind Nut
4
Blind Nut (4mm)
In case of 2-cycle & 4-cycle engine.
4
Blind Nut (4mm)
Engine mount (68x105mm)
Linkage Stopper 4
4
12
4
Washer(4x8mm)
Screw (4x35mm)
Spring Washer (4mm)
Nut (4mm)
2
4
Screw (4x25mm)
2
Fuel tank (550cc) 1
4
Clevis
4
4
Copper joiner
Aluminum tube(3x6mm)
Washer (4x8mm)
Screw (4x25mm)
Washer (4x8mm)
Screw (4x35mm)
Washer (4x8mm)
Nut (4mm)
Spring Washer (4mm)
4mm
1
Matal tube (3x600mm)
1
Rod (1.7x700mm)
Assemble the throttle linkage.
The side view when the engine install completion.
Drill four holes at the diameters as shown for engine
mount.
Assemble the engine.
The front view of the engine install completion.
10
54
53
52
50
51
Accessory list for the coming installation steps.
Securely glue together. If coming off during flights, you 'll
lose control of your airplane which leads to accidents!
2x7mm
3mm
Elevator
1mm
Tailing
edge
Make sure they are in
the right position while
installing.
1
1
Screw (2x10mm)
Nut (2mm )
1
Copper ball (2mm )
2x7mm
U-style wire
2mm
Metal arms
Screw (2x10mm)
Nut (2mm )
Copper ball
4mm
4
Wooden dowel (4x30mm)
1
Rib template (3mm ply)
4mm
Trim the shaded section
Drill holes to appropriate position in the stabilizer and
epoxy it to the fuselahe as below.
Glue the elevator to the stabilizer by CA and epoxy.
Drill two holes at the stabilizer root base on rib template
and epexy the metal dowel in them.
Set the U-style wire through the tail of fuselage as
below.
Keep some space about 1mm width between the
elevator and horizontal tail edge.
A ccording to thr rib template drill holes to the tail of
fuselage as below.
7
37
36
33
35
34
38

Rod (2x300mm) Ball joint
Retainer
Metal arms
Rod (2x300mm) Ball joint
Retainer
Metal arms
Install the rudder servo.
Install the elevator servo.
Assemble the rudder servo to appropriate position in
the fuselage.
CC’
DD’
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=C'
D=D'
TP Screw (2.3x12mm)
open a hole on the covering for ensuring assemble and
demount the covering easily.
9
TP Screw (2.3x6mm)
Ply (15x15x3mm) 9
1.5mm
Assembly of the stabilizer.
Epoxy the plies to appropriate position under the tail landing
gear covering and assemble the tail landing gear covering
to the fuselage as below.
Assemble the elevator servo to appropriate position in
the fuselage.
8
43
42
39
41 44
40
2
Steel wire (0.5x1200mm)
1.5mm
4
TP Screw (3x20mm)
Collar (5mm) 2
1
Wheel (75 mm)
1
TP Screw (3x20mm)
Steering fullarm (60x6mm)
2
Steel wire (0.5x1500mm)
TP Screw (3x20mm) 4
8
TP Screw (2.3x12mm)
1
Steering fullarm (60x6mm)
Collar (5mm) 2
1
Wheel (75 mm)
2
Washer(4x8mm)
2
Screw (4x25mm)
1
Aluminum shaft(5x50mm)
2
Washer(4x8mm) 2
Screw (4x25mm)
1
Aluminum shaft(5x50mm)
Brass collar (5mm)
Brass collar (5mm)
Wheel (75 mm)
Aluminum shaft
Screw (4x25mm)
Screw (4x25mm)
Washer(4x8mm)
Washer(4x8mm)
Steering fullarm (60x6mm) 2
2
2
Clevis
Copper joiner
Aluminum tube(3x6mm)
2
2
Screw (2x10mm)
Nut (2mm )
2
Washer(2x5mm)
Steel wire
Copper joiner
Aluminum tube Lock Nut (2mm )
Screw (2x10mm)
Ball joint
Washer(2x5mm)
2
2
2
Clevis
Copper joiner
Aluminum tube(3x6mm)
2
2
Screw (2x10mm)
Nut (2mm )
2
Washer(2x5mm)
Assemble the servo to the relevant position in the fuselage.
Assemble the nose wheel.
Install the nose landing gear to appropriate
position in the fuselage.
Assemble the steeling fullarm around the landing gear.
Install the servo.
9
49
48
47
45
46
Accessory list for the coming installation steps.