THE WORLD MODELS Groovy 90 User manual

Wing Span
Wing Area
Flying Weight
Fuselage Length
67.5in / 1720mm
997 sq in / 64.3 sq dm
8.9 lbs / 4050g
68.5 in / 1740mm
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.
0.90-1.10 cu.in. displacement 4-cycle
Radio required : 4 channels, 5 servos airplane radio
* Specifications are subject to change without notice.*
Specifications
INSTRUCTION MANUAL
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FACTORY PRE-FABRICATED
ALMOST-READY-TO-FLY (ARF) SERIES
MADE IN CHINA

P. 1
9
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P. 3 - 11
Do not overlook this symbol!
Cut off shaded portion.
Peel off shaded portion
covering film.
Pay close attention here!
Pierce the shaded portion
covering film.
Must be purchased separately!
Drill holes with the specified
diameter (here: 3mm).
3mm
Check all parts. If you find any defective or missing parts contact your local dealer. Please DRY FIT
and check for defects for all parts that will require CA or Epoxy for final assembly. Any parts you
find to be defective after the gluing process may be difficult to remove for warranty replacement. The
manufacturer will replace any defective parts. but will not extend to the parts that are good before
gluing to defective parts during assembly.
I N D E X
BEFORE YOU BEGIN
PARTS LIST
ASSEMBLY
SAFETY PRECAUTIONS
P. 1
P. 2
P. 11
BEFORE YOU BEGIN
Read through the manual before you begin, so you will have an overall idea of what to do.
Symbols used throughout this instruction manual comprise of the following : -
Ensure smooth non-binding
movement while assembling.
Apply instant glue
(C.A.glue, super glue.)
Assemble left and right
sides the same way.
Apply epoxy glue.
1
2
3

Parts List
P. 2
1. FUSELAGE -- 1 pc.
2. MAIN WING -- 1 pair.
3. STABILIZER & ELEVATOR -- 1 set
4.VERTICAL FIN & RUDDER --1 set
5.CANOPY -- 1 pc.
7.PILOT -- 1 pc.
8.SPINNER (w.alu.back plate) Ø70mm -- 1 set
9.ENGINE MOUNT PL5111080 -- 1 set
10.FUEL TANK 380cc -- 1 set
11.SPONGE(For Radio Equipment) -- 1 pc.
12.CARBON FIBER MAIN LANDING GEAR -- 1 pair
13.TAIL LANDING GEAR -- 1 set
14.WHEEL PANTS -- 1 pair
15.MAIN WHEEL Ø55mm -- 2 pcs
16.TAIL WHEEL Ø30mm -- 1 pc.
COPPER TUBE d2.5xD3.2x8mm (For Rudder) -- 4 pcs
17.PUSHROD, PUSHWIRE & PULLWIRE:--
RIGGING Z BEND Ø1.8x27mm (For Rudder) -- 2 pcs
RIGGING COUPLER Ø1.8x27mm w/Threads
(For Rudder ) -- 2pcs
Ø1.8x85mm w/Threads (For Aileron) -- 2 pcs
Ø1.8x900mm w/Threads (For Elevator) -- 2 pcs
WIRE Ø1x1080mm (For Rudder) -- 2 pcs
Ø1.8x105mm (For Elevator) -- 1 pc.
18.THROTTLE PUSH WIRE Ø1.2x270mm
w/Plastic tube d2xD3x130mm-- 1 set
20.PLASTIC PARTS:--
CLEVIS -- 6 pcs
RUBBER BAND -- 2 pcs
6. COWLING --1 set
TRANSPARENT DUMMY COWLING --1pc.
BALSA 10x10x114mm (For Fixing Fuel Tank) -- 1 pc.
19.WOODEN PARTS:--
PLYWOOD 5x61x114mm (For Throttle Servo ) --1 pc.
BALSA 6x6x61mm (For Fueslage Servo Stand) -- 6 pcs
PLYWOOD 5x61x109.7mm (For Elevator Servo ) --1 pc.
PLYWOOD 5x61x112mm (For Rudder Servo ) --1 pc.
STRAPER -- 3 pcs
TRI-HORN M3x14(L) -- 4 sets
TRI-HORN M3x14(L) (w/o-Base For Rudder) -- 2 pcs
SILICON GROMMET d1.5xD6.5mm
-- 14 pcs
21.METAL PARTS:--
LINKAGE CONNECTOR 2.1mm -- 1 pc.
COLLAR 4.1mm w/set screw -- 2 sets
COLLAR 2.6mm w/set screw -- 1 set
STABILIZER TUBE D9.5x254mm -- 1 pc.
WING INCIDENCE ANGLE ADJUSTER -- 4 sets
WING TUBE D22x720 mm -- 1 pc.
WIRE Ø3x115mm -- 1 pc.
M2 NUT -- 3 pcs
M4 NUT -- 2 pcs
SCREW PA3x10mm -- 2 pcs
SCREW PA3x12mm -- 4 pcs
SCREW PA3x25mm -- 1 pc.
SCREW PM2x22mm -- 6 pcs
SCREW PM2x25mm -- 9 pcs
SCREW PM3x15mm -- 6 pcs
SCREW PM3x16mm -- 2 pcs
SCREW PM3x25mm -- 1 pc.
SCREW PM4x25mm -- 4 pcs
SCREW PM4x35mm -- 2 pcs
SCREW PWA2.3x8mm -- 10 pcs
SCREW PWA2.6X12mm -- 4 pcs
WASHER d3xD7mm -- 8 pcs
WASHER d3xD12mm -- 6 pcs
WASHER d4xD9mm -- 2 pcs
23.FUEL TUBE Ø6x5mm -- 9 pcs
24.DECALS -- 1 set
22.ANTI-VIBRATION MOUNT 4C-91 -- 1 set
INCLUDE: SOCKET HEAD SCREW M4x35mm -- 4 pcs
SCREW KM3x20mm -- 8 pcs
WASHER d4xD12mm -- 8 pcs
NYLON INSERT LOCK NUT M3 -- 8 pcs
NYLON INSERT LOCK NUT M4 -- 4 pcs
PUSHROD CONNECTOR -- 1 set
WASHER d4xD12mm -- 4 pcs
ALUMINUM PLATE (For Engine Mount) -- 1 pc.
DOUBLE-SIDED TAPE -- 1 pc.
25.COVERING:--
TOUGHLON STL100 WHITE
TOUGHLON STL 550 PEARL BLUE
TOUGHLON STL 561 PEAR PURPLE
TOUGHLON STL 361 PURPLE
TOUGHLON STL 511 PEARL FERRARI RED
TOUGHLON STL 360 VIOLET
TOUGHLON STL 251 SKY BLUE

Aileron Servo Lead
Bottom View
Main Wing
1
Aileron Servo
2
PM2x25mm Screw
6
P. 3
Ø1mm pilot holes for World Models tri-horn are pre-drilled.
Please look for pin-hole marks at under side of control surfaces.
Apply instant type CA
glue to both sides of
each hinge.
Stabilizer / Elevator
3
AA'
A=A'
PA3 x 12mm Screw
Stabilizer Tube
Bottom View
PA3 x 12mm
50mm
105mm
PA3 x 12mm
M3 x 6mm Set Screw
M3 x 6mm Set Screw
M3 x 6mm Set Screw M3 x 6mm Set Screw
Bottom View
Apply inst ant type CA glu e to both sides of each hin ge.
Bottom View
Bottom View
Ø3x115mm
2mm
2mm
d3 x D7mm Washer
2
d3xD7mm
Washer
d3xD7mm
Washer
2
Pushrod
2mm
Fuel Tube
Ø6x5mm
straper
1.5mm
PM2x25mm
Clevis
Tri-horn
M3x14mm
Ø1.8x85mm

Vertical Fin & Rudder
4
A = A'
A A'
Apply inst ant type CA glu e to both
sides of ea ch hinge.
5Tail Landing Gear
2.5mm
2.6mm Collar
1
PA3 x 12mm Screw
4
M3 x 3mm Set Screw
PA3 x 12mm
Bottom View
2.6mm Collar
1.5mm
COMPLETED
P. 4
Main Landing Gear
6
d3x D12mm Washer
M4 Nut
Wheel Ø55mm
PA3x10mm
4.1mm
Collar
M3 x 3mm Set Screw
PM4x35mm
d3xD7mm
Washer
d4xD9mm
Washer
PM3x15mm Screw6
4.1mm Collar
PA3 x 10mm Screw
2
Bottom View
PM4x35mm Screw
2
2
d3xD12mm Washer
6
2
d4xD9mm Washer
PM3x15mm
Front
M4 Nut
d3xD7mm Washer
2

PM2x25mm
M2 Nut
205mm
50mm
P.5
Rudder Pullwire
7
235mm
102mm
Rigging Coupler
1.8x27mm
Fuel Tube
Ø6x5mm
Clevis
Copper Tube
2mm
PM2x25mm Screw
3
M2 Nut
3
235mm
102mm
Tri-horn
M3x14mm
9Engine Mount
!
Blind nuts are off-centered to keep
the spinner at the fuselage axis.
4
d4 x D12mm Washer
Engine Mount
PL 5111080
Apply thread locker to screws.
PM 4x 25mm Screw
4
d4 x D12mm
Washer
PM 4x 25mm
8Elevator Pushrod
PM 2 x 22 mm Screw
6
Ø1mm pilot holes for World
Models tri-horn are pre-drilled.
Please look for pin-hole marks at
side of control surfaces.
Elevator Pushrod
1.8x 900mm
Fuel Tube
Ø6x5mm
PM 2 x 22mm
Tri-horn
M3 x 14mm(L)
Clevis
2mm
Ø1mm pilot holes for World Models tri-horn are pre-drilled.
Please look for pin-hole marks at under side of control surfaces.
Bottom View

P.6
Fuel Tank
10
Engine
11
M4 Nylon Insert Lock Nut
4
8
4
8
d4 x D12mm Washer
KM3x20mm Washer
M3 Nylon Insert Lock Nut
8
d2xD3x130mm
Plastic tube
Throttle Pushwire
1.2x270mm
5.6in.
Install Engine position
M 4 x 3 5 m m
d4 x D12mm
M4
d4 x D12mm
ANTI-VIBRATION MOUNT INSTALLATION
M3 Nut
KM3x20mm
Make sure the rounded edges
are facing the shock absorbing
SILICON PAD.
P.6
Fuel Tank
10
Engine
11
M 4 x 3 5 m m S O C K E T H E A D S C R E W
M4 Nylon Insert Lock Nut
4
8
4
8
d4 x D12mm Washer
KM3x20mm Washer
M3 Nylon Insert Lock Nut
8
5.39in.
d4 x D12mm Washer
ANTI-VIBRATION MOUNT INSTALLATION
M3 Nut
KM3x20mm
Make sure the rounded edges
are facing the shock absorbing
SILICON PAD.
M4 Nylon Insert Lock Nut
137mm
Rubber Band
Install Plywood 10 x 10 x 114mm
(For fixing fuel tank)
Fuel Tank
380cc
Fuel Tank
380cc
Rubber Band
Install Plywood 10 x 10 x 114mm
(For fixing fuel tank)
M 4 x 3 5 m m
SOCKET HEAD SCREW
d4 x D12mm Washer

P.7
Throttle Pushwire
3mm
Included with the radio Set.
Throttle Servo.
2mm
Servo Set
2mm
3 x 3mm Set Screw
Linkage Connector
M2 Nut
2mm Washer
1
1
1
2
LINKAGE CONNECTOR
12
2mm
Please refer to attached sheet for linkage connector installation.
2mm
Radio Equipment
13
Install and arrange the servo as shown in the diagram.
Throttle Servo
Throttle Pushwire
Ø1.2x270mm
Ø1x1080mm
Straper
Fuel Tube
Ø6x5mm
Ø1.8x900mm
Elevator Servo
Rudder Servo
RIGGING Z BEND
Ø1.8x27mm
PWA2.6x12mm
Inside
Outside
Wing Incidence Angle Adjuster
KM 2x8mm
2mm
Elevator Pushrod
Ø1.8x105mm
M3 Nylon Insert Lock Nut
M3 x30mm
Elevator Pushrod
Rudder Pullwire
Sponge
Plywood 5x61x114mm
Copper Tube
Press down the center
1/3 portion
Balsa
6x6x41mm
Balsa
6x6x41mm
Plywood
5x61x109.7mm
5x61x112mm
Plywood

P.8
Main Wing
14
d3 x D7mm Washer
PM3x25mm Screw
1
2
PA3x25mm Screw
1
Step 1. Insert the aluminum wing tube with the pre-drilled hole end into the right wing. Align
the lines marked at the wing root and wing tube, then apply the PM3 X 25mm machine screw
through the pre-drilled hole on top of the wing. ( please confirm the alignment of the hole by
putting a 2.5mm diameter rod through the pre-drilled wing hole before applying the screw )
The hole on the wing tube is pre-threaded, do not over tighten the PM3 screw, the set up is for
future removal of the wing.
Step 2. Install the right wing to the fuselage by inserting the wing tube (now attached to the right
wing) through the fuselage, then install the left wing.
Step 3 . Make sure t h e wings a r e resting against the fuselage t i g h t l y. Locate the p r e - d r illed 2.5mm h o l e at
top of left w i n g , and drill along with 2.5mm drill b it until it passes through the w i n g t u b e . A p p l y t h e PA 3
X 2 5 m m s e l f - t a p p i n g s c r e w .
Note : It is recommended that the wing tube stays with the left wing. Removal of the wings could be achieved by
removing the right wing machine screw, the right wing then the left wing with wing tube. If removal of wing tube
from left wing is also required, it is recommended that instead of applying self-tapping screw in step 3, you pre-tap
with M3 thread cutter and apply M3 machine screw.
Wing Tube
D22x720mm
PM3x25mm
d3 x D7mm Washer
≈300mmm
Lead to Aileron Servo
PA3x25mm
d3 x D7mm
Washer
2.5mm
Top View
Left Right

P.9
Canopy & Pilot
15
PWA2.3 x 8mm
d1.5 x D6.5 mm
Silicon Grommet
16 Cowling
PWA2.3x8mm Screw
6
10
d1.5 x D6.5 mm
Silicon Grommet
PWA2.3 x 8mm
PWA2.6 x 12mm
d1.5 x D6.5 mm
Silicon Grommet
PWA2.6x12mm Screw
4
PM3x16mm
Pilot 1mm
Spinner
First insert the grommet to the canopy then apply screw.
d1.5 x D6.5 mm
Silicon Grommet
1mm
Apply double-sided tape
First insert the grommet to the
cowling then apply screw.
PWA2.3x8mm Screw
4
4
d1.5 x D6.5 mm
Silicon Grommet
PM3x16mm Screw
2
d3xD7mm
Washer
d3 x D7 mm Washer
2

P.10
A A'
Wing Setting
17
Adjust the wing and fuselage configuration as in the diagrams.
A=A' B=B' C=C'
BB' C'
C

P.11
Adjust the control throws as shown in the diagram.
These throws are good for general flying. You can
adjust according to your personal preference.
Elevator
Rudder
19
Ailerons
35mm
35mm
70mm
70mm
35mm
35mm
160 mm
6.3 in.
Important Safety Precautions
# First time flyer should never fly by himself / herself. Assistance from experienced flyer is
absolutely necessary.
# Pre-flight adjustment must be done before flying, it is very dangerous to fly a badly
pre-adjusted aircraft.
# GROOVY-90 is specially designed to be powered by 4c 0.90-1.10 engine, using a more
powerful engine does not mean better performance. In fact, over powered engine may cause
severe damage and injuries.
# Make sure the air field is spacious, never fly the plane too close to people and never get
too close to a running propeller.
# If you find wrinkles on the covering as a result of weather changes, you can use hot iron
to remove the wrinkles. Please begin with lower temperature setting and gradually raise
the temperature until the wrinkles are gone. Too hot an iron may damage the covering.
# Check and re-tighten up all factory assembled screws, use thread locker if applicable.
The ideal C.G. position is 160mm (6.3 in.) behind
the leading edge measured at where the wing
meets the fuselage. In order to obtain the C.G.
specified, add weight to the fuselage or move
the battery position. Check the C.G. before
flying.
A2090410
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