Nexa YAK-9 User manual

SPECIFICATIONS
Wingspan 59.8 in.
Length 48.7 in.
Electric Motor 800-900Watt
Glow Engine .46 2-T / .70 4-T
Radio 6 Channels / 6-7Servos
TECHNISCHE DATEN
Spannweiter 1520mm
Lange 1237mm
Elektroantrieb 800-900Watt
Verbrennerantrieb 7.5cc 2-T / 11cc 4-T
Fernsteuerung 6 Kanal / 6-7 Servos
WARNING! This radio controlled model is NOT a toy. If modified or flown carelessly it could go out of controll and
cause serious human injury or property damage. Before flying your airplane, ensure the air field is spacious enough.
Always fly it outdoors in safe areas and seek professional advice if you are unexperienced.
ACHTUNG! Dieses ferngesteuerte Modell ist KEIN Spielzeug! Es ist für fortgeschrittene Modellflugpiloten bestimmt,
die ausreichende Erfahrung im Umgang mit derartigen Modellen besitzen Bei unsachgemäßer Verwendung kann
hoher Personen- und/oder Sachschaden entstehen. Fragen Sie in einem Modellbauverein in Ihrer Nähe um
professionelle Unterstützung, wenn Sie Hilfe im Bau und Betrieb benötigen. Der Zusammenbau dieses Modells ist
durch die vielen Abbildungen selbsterklärend und ist für fortgeschrittene, erfahrene Modellbauer bestimmt.
45 Class
70 Class
2-cycle engine
4-cycle engine
All balsa, plywood construction and almost ready to fly
Or Electric equivalent
YAK
INSTRUCTION MANUAL / Montageanleitung

Minimum 6 channel radio
for airplane with 7 servos
.60 ~.70 - 4 cycle
10.5x6 for .40 - 2 cycle engine
11x6 for .46 - 2 cycle engine
12x6 for .60 - 4 cycle engine
12x7 for .70 - 4 cycle engine
11x8 for Brushless Motor
Silicone tube
Extension for aileron
flap and retract servo.
.46 ~ .50 - 2 cycle
TOLLS REQUIRED
Hobby knife
Needle nose Pliers
Phillip screw driver
Awl
Scissors
Wire Cutters
(Purchase separately) Hex Wrench
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Sander
Masking tape - Straight Edged Ruler - Pen or pencil - Rubbing alcohol - Drill and Assorted Drill Bits
.Motor control x1 .Aileron x2
.Flap x2 (mini servo)
.Elevator x1 .Rudder x1
800-900Watt brushless Motor
ESC:60-65A
Li-Po Battery
CONVERSION TABLE
1.0mm = 3/64”
1.5mm = 1/16”
2.0mm = 5/64”
2.5mm = 3/32”
3.0mm = 1/8”
4.0mm = 5/32”
5.0mm = 13/64”
6.0mm = 15/64”
10mm = 13/32”
12mm = 15/32”
15mm = 19/32”
20mm = 51/64”
25mm = 1”
30mm = 1-3/16”
45mm = 1-51/64”
OPTIONAL ACCESSORIES / BENOTIGTES ZUBEHOR
SILICON
EPOXY A
EPOXY B
CA
GLUE
Epoxy Glue (5 minute type)
Silicon sealer
Cyanoacrylate
Glue Epoxy Glue (30 minute type)
(Purchase separately)
Klebstoff
Epoxy-Klebstoff (30min-Typ)
Epoxy-Klebstoff (5min-Typ)
Low setting
If exposed to direct sunlight and/or heat, wrinkels can appear. Storing the
model in a cool place will let the wrinkles disappear. Otherwise, remove
wrinkles in covering film with a hair dryer, starting with
low temperature. You can fix the corners by using a hot iron.
Bei Sonneneinstrahlung und/oder Wärme kann die Folie erschlaffen bzw. Falten
entstehen. Verwenden Sie ein Warumluftgebläse (Haartrockner) um evtl. Falten aus der Folie
zu bekommen. Die Kanten können Sie mit einem Bügeleisen behandeln. Nicht zuviel Hitze anwenden !
1.5mm
AB
!
CA
L/R
Assemble left and right
sides the same way.
X
Drill holes using the stated
size of drill
(in this case 1.5 mm Ø)
Use epoxy glue
Take particular care here
Hatched-in areas:
remove covering
film carefully
Not included.
These parts must be
purchased separately
Check during assembly that these
parts move freely, without binding
Apply cyano glue
www.motionrc.com

X
Aileron servo
extension
cord
X
Flap servo
extension
cord
Using the thread (pre-installed at
factory) to slide the aileron and flap
extension cord into the wing half.
YAK-9 1- MAIN WING: Extension cord & Servo
3
X
X
X
This model is highly pre-fabricated and can be built in a very short time. However, the work which you have to
carry out is important and must be done carefully. The model will only be strong and fly well if you complete
your tasks competently - so please work slowly, accurately and check every joints, maybe apply more glue to
be safe.
SAFETY NOTES BEFORE ASSEMBLING
Read through the manual before you begin, so you will have an overall idea of what to do.

............2
2mm
Connector
Aileron push rod 2x175mm
............2
.....2
Steel clevis Flap push rod 1.2x120mm
............2
Plastic EZ link
............2
Plastic control horn
............2 set
Plastic control horn
............2 set
2x20mm screw
......4
2 mm
connector
Flap push-rod
1.2x120mm
2- MAIN WING: Control horn & Linkages
4
Secure the plastic control horn
in place using the thin CA glue.
CA
2 mm
YAK-9

Without using Epoxy yet, trial fit the wing joiner
into one of the wing panels.
Next, slide the other wing half onto the dihedral
brace until the wing panels meet. If the fit is overly
tight, it may be necessary to lightly sand the
dihedral brace.
Carefully slide the wing halves together, ensuring that
they are accurately aligned.
Firmly press the two halves together, allowing the excess
epoxy to run out. Using a paper towel, clean off the excess
epoxy.
Draw the center line
on the wing joiner
Coat one half of the dihedral brace with epoxy up
to the center line. Install the epoxy-coated side of
the dihedral brace into the wing joiner cavity up to
the center line.
Hold the wing halves together with paper
clamp and rubber band.
Rubber band
(not include)
Paper clamp
(not include)
Nylon wing bolt
(included)
30 min.
Epoxy
3- MAIN WING: Joining the wing halves
5
CA
6x20mm dowel.
Securely glue together. If coming off during flight,
you lose control of your air plane.
YAK-9

Main landing gear
Gear mount
1
3x20mm
Nylon gear
strap
2mm
2
Ply gear
mount flat
Square
plastic
3
CA
4
2mm
2mm
3x20mm
5
Insert the main landing gear into
the slot on the gear mount, if
necessary, use sander to widen
the slot to make this easier.
3x12mm screw
Ply gear mount
plate x 2 Gear mount x 2
3x20mm screw
......16
Nylon gear strap
.......4
Square plastic x 2
.......8
4- MAIN WING: Fixed gear assembly
.........8
3x12mm screw
2mm
2mm
3x12mm
screw
3x12mm screw
6
YAK-9

2x6mm screw
..........4
....2
...2
4mm collar
Wheel well cover
CA
Step 5A
Step 5B
Step 5C
CA
Plastic track
1.5mm
Attach the plastic wheel well cover in
place and secure it with litter
CA glue or 2x8mm screws.
or
5- MAIN WING: Wheel
7
Step 5E
YAK-9

ON
OFF
GEAR
SWITCH
EXTENDED
RETRACTED
6- MAIN WING: E-retract & strut
Note: Eretract and strut must be purchase separately
www.motionrc.com
Step 6A
Step 6B
Step 6C
Step 6D
Fix the adapter in the retract with hexagon socket
screws supplied with scale oleo strut.
Fix the strut on the adapter....
...then tighten the locking bolt.
8
YAK-9

2mm
7- MAIN WING: E-retract & strut
Step 7A
Step 7B
Step 7C
Step 7D
Drill appropriately sized holes for the hardware
you intend to use (not supplied) then attach the
retract in place (we recommend to use self tapping
screws 3x15mm).
Slip the wheel on the axle with the circlip
pointing away from the strut...
...then attach the axle to the gear and tighten the locking bolt
(use LOCTITE threadlocker on every bolt).
9
YAK-9

6x40mm nylon bolt
.........2
Cut away only
the covering
Using the ABS air scoop (part A) as a template, trace around the outside edge of the ABS air-scoop and then remove it.
Apply the plastic air scoop (part B) in place and secure with CA glue.
A
8- Attach the wing to the fuselage
YAK-9
9- Air scoop
YAK-9
10
CA
Thin CA
B