THE WORLD MODELS 1/6 PIPER PA-25 PAWNEE User manual

Warning! This model is not a toy.
It is designed for maximum performance. Please seek advice if one is not familiar with this kind
of engine powered precision model. Operating this model without prior preparation may cause
injuries. Remember, safety is the most important thing. Always keep this instruction manual at
hand for quick reference.
PRECISION LASER CUT
EASY BUILT KIT SERIES
MADE IN CHINA
The World Models
Manufacturing Co., Ltd.
www.theworldmodels.com
INSTRUCTION MANUAL
Wing Span : 72 in / 1830 mm
Wing Area : 736 sq in / 47.5 sq dm
Flying Weight : 6.6 lbs / 3000 g
Fuselage Length : 48 in / 1220 mm
Requires :
[A335 Kit ]
[A335 Kit ]
*Specifications are subject to change without notice.*
1/6 PA-25 PAWNEE
1/6 PA-25 PAWNEE
"Glow Power" requires: 6-channel radio w/4 mini servos,
3 standard servos, 2-stroke 0.40-0.46 engine.
"Electric Power" requires: 6-channel radio w/6 mini
servos, Outrunner Motor KM37490750 w/Radial Mount
Adaptor HW2340300, 40A Brushless ESC, 4 cells 14.8V
3200mAh Lipo battery and charger.

The World Models
The World Models
FUSELAGE ASSEMBLY
Lay out the fuselage parts on a flat table top.
Flip the fuselage over with bottom up, take F29 and latch it
between the two side panels. Note that the side with small
plywood sheet should be facing inside of the fuselage.
Use tape to hold F29 in place.
F29 in position.
Flip the fuselage over now with top up, take F10 and latch
it between the panels. Make sure the open slot of F10 is
at the top.
Remove parts from plywood, cut connecting taps when
required.
Use tape to bind the left and right fuselage panel together
at the ends.
Hold the panels by tape.
1.1
1.2
1.3
1.4
1.5
1.6
1.7
P.1

P.2
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1.9
1.8
1.10
1.11
1.12
1.13
1.15
F4
F5B
F10 in position.
Latch in F4 and F5B in the same manner as 1.14 above.
1.14
F27
F20
landing gear housing
F23
F17
F16
F22
F21
Latch in F16, F17, F20, F27 and landing gear housing
perpendicular the the left side panel and apply a few drops
of CA to fix them in place. Make sure F20 and F27 have
the grooved side facing outward. F17 with the small ply-
wood blocks facing inward.
Take F5 and latch between the panels. Make sure the
side with glued plywood block is facing the rear. Apply a
few drop of CA to temporary fix its position perpendicular
to the left side panel.
How it looks when F31 is in position.
Cut open CA glue tip for CA application. Make sure open-
ing is not pointing at anyone.
Latch in F31.
Latch in F21, F22 and F23 and apply glue to from the lan-
ding gear housing.

P.3
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F3
F2
F1
F15
1.19
1.17
1.18
F6
F7
F8
F9
Insert two black and one white pushrod guide sleeve into
the partition panels.
Latch in F6, F7, F8 and F9 between the fuselage panels.
Pay attention to the tenons and cut outs, they may not
be symmetrical and if they don't seem to fit, flip it left to
right will do.
1.16 Press and fit right side fuselage to F4, F5, F5B, F16, F17,
F20, F27 and landing gear housing, use tape to hold them
in position.
Latch in F3, F15, F2 and F1 one after the other from back
to front and secure with tape. It is recommended to glue
in F1 with epoxy glue for additional strength.

P.4
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2.1
2.2
2.3
3.1
1.20 Basic fabrication of fuselage is complete. Check any loo-
se joints and distortion of the frame work. Prepare to ap-
ply glue in the next step.
Expose 5~10mm length section for the pushrod sleeves
outside the plywood partition and apply CA to fix it in po-
sition. Make sure glue does not get inside sleeve.
Apply CA glue to all surfaces in contact. Apply from both
sides in and out and let glue seep into joints. Use exten-
sion tube through side panel holes to get access to inside
of fuselage. Avoid area with tapes at this stage, when
glue is cured at other areas, remove tape and apply glue
to area under the tapes.
If epoxy was not used in Step 1.19, apply adequate CA
to the F1 joints.
Remove tapes after glue is cured, flip over fuselage and
prepare to work on bottom of fuselage. Rest fuselage on
foam blocks or other material to clear the partition plywood
from table, which could be damaged under stress.

P.5
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3.3
3.4
3.2
F28C
F28
F23A
F23A
F26
F28A
Latch in F28, apply glue to inside and outside of the fuse-
lage.
Insert F28C into tail section of fuselage, note that it should
pass through the notch of F10, and share the notch of F7
with F28A, apply glue to fix in position.
With fuselage bottom up, glue in two F23A and then F26A.
Note groove of F26A should match opening of landing gear
housing.

P.6
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3.5
3.7
3.8
3.6 Insert wing tube sleeves into fuselage. Apply glue to fix
them in position. When cured use sand paper to grind
down sleeves to flush with fuselage side panels.
F16B
F14A
F14
F24
F45 F46
F45
F46
F25
F25
F20A
F14B
F19A
F16B
F27B
F27A
Flip over fuselage and glue in reinforcement bars F16B,
F20A, F24, F25, F27A and F27B.
With fuselage bottom up, latch in F19A and F25. After fit-
ting in tenons and cut outs, apply glue to fix it in position.
Flip over fuselage to apply glue from the inside.
Glue in F14A to F14, then glue in bottom of fuselage. Flip
over fuselage, glue in F45 and F46, then F14B.

P.7
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F36 F36
F18A
F18A
F18B
F36
F18
F7A
F35
F36
F38 F38
F39
F40
F39
F40
3.10
3.9 Glue in F35 and F36, when cured, glue in F38, F39 and
F40. Glue in F18, F18A and F18B. Note that F18A should be
flushed with F18, so F18B could be flushed with the fuse-
lage side panel. Use sand paper to grind down uneven
surface before glue in F7A.

P.8
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F42
F41
F41
S1
F32
F42
F43
F5A
F6A
3.11 3.12
Glue in F41 and F42, don't force F5B and F6 to accom-
modate the length of F41 and F42, grind them down with
sand paper after gluing in F43. Glue in F5A and F6A.
Sand down uneven surface of F10, glue in F32. Use S1
as template to align F32. Since you have to remove S1
after gluing, apply tape to S1 to protect it from sticking to
F32.

P.9
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4.1
4.2
BATTERY COVER ASSEMBLY
3.13 Cut and trim plastic sleeves to flush with fuselage.
3.14 Use sand paper to remove rough edges.
Lay out parts for the battery cover.
Apply thin plastic sheet to protect battery cover opening.
Insert F59 into F48, then F48A, align the edges and the
semi-circle cut outs. Apply CA to glue them in position.
When cured, insert the assembly to the fuselage, with F59
through the upper hole of F1.
F59
F48
F48A

P.10
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4.3
4.4
F47
F50
F49
F50A
4.5
4.6
F52
F51
F51
F53
F56
F55
F57
F56
F55
F57
F52
Glue in F47, then F50, F50A and F49.
Glue in F51, F52 and F53. Make sure CA glue do not get
inside F53 latch.
When cured, remove from fuselage and glue in F55, F56
and F57, apply glue on both sides.
When cured, use sand paper to remove rough edges and
insert to fuselage, grind down uneven surface if necessary.

P.11
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W2
W1R
W21
W21
W19
W19
W3R W4 W5 W6 W7 W8
W9
W13
W12A
W9
W1R
5.1
5.2
5.3
5.4
MAIN WING ASSEMBLY
Lay out parts for the wings.
Apply glue to the narrower side of W12A and glue to W13.
Insert and glue in the W12A/W13 assembly perpendicularly
to W1R, make sure it is all the way in. W1R should have
an angle with W12A/W13, which is the dihedral angle of
the wing half and is completely normal.
Glue in W12A/W13 assembly perpendicularly to W9, note
that W9 is the wing tip end and should be perpendicular to
W12A/W13.
Glue in W2, W3R, W4, W5, W6, W7 and W8, note that they
should be perpendicular and flushed with W12A/W13. Latch
in W21 to W2 and W3R, W6 and W7 and apply glue. Glue
in W19 between W7 and W8, make sure blind nuts are
facing inside of wing.

P.12
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5.5
5.7
5.8
5.6
W14
W22
W32
W31
W30
W29
W28
W11
W11
W11
W23
Insert fiber glass sleeves for wing tubes into W1R, W2, and
W3R. Glue them in place and when cure, use sand paper
to remove edges to make it flush with W1R.
Glue in W11 and W14, make sure the ends are flushed
with the ribs W2 ......W8.
Glue in reinforcement plate W23, (15 pcs. ). Glue in W11. Glue in balsa sheets W22, W28, W29, W30, W31 and W32.
Pay attention when gluing W28 and W32, not to allow glue
to get inside blind nuts. Apply glue to outside of balsa
sheets, when cured, apply glue to underside of balsa sheets.

P.13
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5.9
5.10
5.11
5.12
W26
W37
W40
W37A
W40A
W38A
W39A
W27A
W27A
W27
W25
W24
W41 W38
W39
W10
W36
Glue in W24, W25, W26, W27 and W27A.
Glue in W41 to W36, then W38 and W39. When cured
glue in W10.
Glue in W37 and W40, then flip over to the flat side and
glue in W37A and W40A, then W38A and W39A.
Use sand paper to grind down uneven surface of W9,
then glue in W10 wing tip assembly.

Lay out parts for the vertical fin and rudder
VERTICAL STABILIZER AND
RUDDER ASSEMBLY
P.14
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5.13
5.14
6.1
W15R
V3 V2
V1
Place V2 and V3 on flat surface and apply glue to glue them
together. Insert CA hinges to the vertical stabilizer hinge
grooves, install rudder and check alignment of rudder. Do
not apply glue to the CA hinges at this stage. Sand down
rough edges if necessary.
Use sand paper to remove rough edges of the wing
assembly.
Glue in W15R. Dry fit W16 flap and W17 aileron with the
hinges, do not apply glue at this stage.

HORIZONTAL STABILIZER
AND ELEVATOR ASSEMBLY
P.15
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Lay out parts for horizontal stabilizer and elevator
Carefully inspect all the glue joints for
the assembled parts. If you find gaps
between contacting surfaces, add gap
filling CA glue or epoxy to reinforce
the joints.
STABILIZER, RUDDER, MAIN
WING AND FUSELAGE SETTING
S2
S1
S3
7.1
8.1
8.2
8.3
Place S2 and S3 on flat surface and apply glue to glue them
together. Insert CA hinges to the elevator hinge grooves
and fit in the horizontal stabilizer, check alignment of the
elevator. Do not apply glue to the CA hinges at this stage.
Sand down rough edges if necessary.
Dry fit all the main components of the plane. Remove left
elevator from horizontal stabilizer and pass through the
tail slot, align the middle slot of the horizontal stabilizer
and install back the left elevator.
Install the vertical stabilizer, make sure the bottom tenon
pass through the center slot of the horizontal stabilizer.
Install the rudder.
Install wing tube and wings. Check for imperfections and
repair if necessary.

P.16
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The World Models
COVERING
The following ironing procedure is for the World Models Tough-
Lon covering. Please follow the instructions included with the
covering material. Please completely remove dust from the
surface before covering, or the covering will not stick to the sur-
face. The covering adhesive is activated at 58ºC/136ºF, and
shrinking starts at 90ºC/194ºF. Set your iron at about 60ºC/
140ºF to begin.
Lay out the Fuselage coverings.
Cover iron with cotton cloth to eliminate scratch and bet-
ter temperature distribution. A hobby grade sealing iron
with cover sock is recommended for better handling.
Take out the covering piece for the bottom of fuselage,
and peel off backing sheet.
11.3 Place covering on fuselage bottom, completely covering
the surface with 5mm overhang at all sides.
Tack the covering at corners, this will temporarily fix the
position of the covering, and start ironing on the covering.
If position is not right, apply heat and peel off the covering
and rework. Never try to peel off covering when the co-
vering is cold and adhesive has set, you may pull away
wood or separate the color layer. Always heat up the
covering to melt the adhesive before peeling.
9.1
9.3
9.4
9.2
Iron on the overhangs to cover the edges. If you need to
shrink the covering to conform to the shape of edges, you
can do so by raising the iron temperature. Just apply heat
at the required spot only. Since the shrinking temperature
is much higher than the adhesive melting temperature, if
you apply high heat at area near the edge or seams of
covering, the covering will pull away from the edge or
seams. Trim off unwanted material.

P.17
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Lay out the vertical fin and rudder coverings.
9.5
9.9
9.10
9.6
Iron on top partition board.
9.7
9.8 10.1
Cover the battery hatch. Cut a slit on the covering for
the latch knob before ironing.
Iron on covering for the side panels. Always use lower
heat to stick on the covering. Use high heat carefully only
for shrinking covering around corners.
Iron on upper blue covering.
Iron on color trimmings.
Paint the cockpit black.
Cover vertical stabilizer and rudder. You may need to
install the stabilizer and rudder and mark trimming position
for professional result.

P.18
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11.1
12.1
13.1 Cover the aileron servo tray.
14.1
14.2
14.3
14.4
14.5
The plane is now ready for
equipment installation.
Lay out the Wings coverings.
Cover the horizontal stabilizer and elevator.
Cover the wing struts.
Cover the left wing panel with similar procedure.
Cover the right wing panel. Cover the bottom panel, and
then the top panel.
Prepare openings for aileron and flap servo trays.
Cover wing tip, bottom first then the top. Apply higher
heat to shrink covering around the round edges.
Cover the aileron and flap.

The World Models
Manufacturing Co., Ltd.
www.theworldmodels.com
www.theworldmodels.com www.twmrc.com
www.radarrc.com www.radarrc.cn
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