VQ Mega Fly User manual

RADIO CONTROL MODEL
ASSEMBLY INSTRUCTION
Mega fly
.40 ARF LOW WING TRAINER
Wingspan 1510mm
Fuselage length 1070mm
Engine: 40 - 46 2T / 52 - 60 4T
Electric Motor: 600-700W
Radio: 5 channel / 4-5 servo
RC Functions: Rudder - Elevator - Aileron - Throttle
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.

Awl
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SILICON
EPOXY A
EPOXY B
CA
Silicon sealer
Silicone tube
Extension for aileron servo.
Read through the manual before you begin, so you will have an overall idea of what to do.
Brushless Motor
600-720W
or equivalent.
LiPo 4500 mAh (5-6)S
REQUIRED FOR OPERATION (Purchase separetely)
10.5x6 for .40 - 2 cycle engine
11x6 for .46 - 2 cycle engine
11x7 for .52 - 4 cycle engine
12x7 ~13x6 - Electric motor
.40 - .46 - 2T
.52 - .70 4T
Radio a 5 channel (min)
4 servo (Motorx1, Rudderx1
Elevatorx1, Aileronx2: mini
or standard servo.
GLUE
(Purchase)
Cyanoacrylate
Glue
Epoxy glue (5 minute type)
Epoxy glue (30 minute type)
TOOL REQUIRED
Hobby knife
Needle nose Plier
Sander
Phillip screw driver
Scissor
Hex Wrench
Wire Cutters
Masking tape - Straight Edged Ruler - Drill and Assorted Drill Bits
TABELLA DI CONVERSIONE
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”
If exposed to direct sunlight and / or heat, wrinkles can appear. Storing the model in a coll
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.
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

AB
! Make sure to glue
securely, If not properly
glued, a failure in flight
may occur.
1- Joining the wing
AB
20mm
15mm
Draw the center line
on the wing joiner
- Trial fit each part before gluing . Be certain that there are no gaps.
If the parts will join, but with a gaps, sand or trim the parts a little
at a time until the parts meet exactly with no gaps.
- Check for the correct dihedral angle
AB
Glue must go inside
Wing joiner
Glue
Wing half
Rubber band
(not include)
Paper clamp
(not include)
Nylon wing bolt
(included)
Hold the wing halves together with paper clamp
and rubber band
AB
Before gluing:
- Draw the center line on the wing joiner.
Note: The two wing halves roots must fit together perfectly.
IMPORTANT:
Please do not clean off the excess epoxy on the
wing with strong solvent or pure alcohol, only use kerosene to
keep the colour of your model not fade.
Cut through the balsa
wood and the covering
Thread
Thread
Adhesive tape
Pull the thread to out of the wing
through the square hole you make
above and secure it in place with
the adhesive tape.
WING HALF-TOP VIEW

2- Aileron servo installation
Extension cord
Cut away the covering of the wing bottom where the
aileron servo goes.
Pull the thread out of the wing and connecting the aileron
servo extension cord to one end of the thread.
Pull one end of the thread (on the top and near the wing
root) to install the aileron extension cord into the wing.
3- Aileron linkage / Querruderanlenkung
AILERON SERVO
WING BOTTOM-VIEW
WING BOTTOM-VIEW
Attach the control horn on the aileron with 2x15mm screws.
Screw the clevies halfway on the theared end of the aileron
push rod. Attach the push rod to the aileron horn. Mark the
position where the push rod will attach to the servo arm.
Cut off the excess length of the push rod
Plastic control horn
..........2
...................4
..........2
Included with the
radio set.
X
X
3mm set Screw
2 mm
Aileron pushrod
D=5/64”(2mm)
Ensure that the servo is centered. If necessary, adjust the
metal clevis so the aileron is also in the neutral position.
Extension cord
WING BOTTOM-VIEW
3- Aileron servo installation
Cut away only the covering
Connect the aileron extension cord to the
aileron servo and secure with adhesive tape
before install the aileron servo on to the wing.
Adhesive
tape
Do the same way with second aileron
servo.

4- Main wing/installing the main gear
3x12 mm screw
4mm collar
Cut away only the film
BOTTOM VIEW
Nylon strap
Main gear
1- Locate the main landing gear struts and place
them into the landing gear slot as show. Make
sure that the ends of the struts are inserted into
the holes in the landing gear channel.
2- Position the four nylon straps across the landing
gear struts. Using the eight 3x12mm screws
located in the hardware bag, fasten the landing
gear to the bottom of the wing as show.
3- Slide one wheel onto each of the
landing gear axles and secure them
with the supplied wheel collars
* WARNING: When removing any covering from the airframe,
please ensure that you secure the cut edge with CA or similar
cement. This will ensure the covering remain tight.
FUSELAGE - TOP VIEW
1-Insert the Z-bend into the hole on the throttle lever of your engine. Note: It maybe
easier to temporarily remove the carburetor from the engine to insert the Z-bend.
It may also be necessary to slightly enlarge the hole to accept the Z-bend.
THROTTLE
CABURETOR
1/16”
6 -Engine
2
Nose gear
control horn
Nose gear
1
5
6
5- Nose gear
2-Set the engine on the engine mounting beams. Adjust the pacing of the beams
so they are centered in the relation to the mounting plate and so they are almost
touching both sides of the engine crankcase.
3-Position the engine on the engine mount beams so the distance from the prop
hub to the fire wall is 5mm
4-Using a pencil, mark the engine mounting plate where the four holes are to be
drilled
5-Remove the engine and drill a 9/64”(3.5mm) hole through the beam at each of
the four marks made in step 4 above.
6-Reposition the engine on the mounting beam, aligning it with the holes. Secure
it in place with the four 1/8x25/32”(3x20mm) screws.
1-Securely attach the nose gear mount to the fire-
wall using the four 3x15mm screws
2-Insert the white plastic tube into the fuselage,
through the firewall.
3-Insert the Z-bend of the nose gear control pushrod
into the hole on the nose gear control horn.
4-Insert the pushrod into the plastic tube
5-Position the nose gear control horn on the center of
the nose gear mount.
6-With the screw hole facing forward,slide the straight
end of the nose gear on to the nose gear mount.
7-When satisfied with the fit and alignment, secure the
nose gear control horn in place with 1/8x13/32”(3x10mm)
set screw.
TOP-VIEW
...4
3x15mm screw
(1/8x19/32”)
3
Set screw
1/8x25/32”(3x20mm) screw
3 ~ 5mm
! Engine thrust on balk head is already adjust at factory

AB
AB
Cut away only
the film*
2x12mm screw
Hinge Line/Control horn Alignment
8-Vertical / Horizontal Tail
Attach the Vertical Stabilizer and the Horizontal Stabilizer
Incorrect
Correct Incorrect
AA’
A=A’
AA’
A=A’
/
BB’
B=B’
/
Check the alignment of the horizontal stabilizer by measuring from a fixed point along the center line of the fuselage
to the leading edge on each side of the horizontal stabilizer. The distance must be equal on both sides. If not, adjust
the stabilizer until the measurements are the same.
1-Slide the vertical and horizontal stabilizer on the fuselage, use a
pencil to trace around the bottom and the top (horizontal stabilizer)
and the right and the left (vertical stabilizer).
2-Remove the vertical and horizontal stab-
ilizer from the fuselage. Careful cut
away the covering inside the lines which
were marked in steep ..
3-Place the control horns on the side of
the rudder and bottom of the elevator.
Drill two holes through the elevator and
rudder as shown. Attach the control
horns using the 2x15mm screws
4-Slide the horizontal and vertical stabi-
lizer into the fuselage and adjust the ali-
gnment as described. Note: it is impor-
tant
to ensure that the horizontal stabilizer
is also level in regards to the fuselage.
2mm
2mm
BB’
B=B’
Cut away only the film
both the left and right
side*
* WARNING: When removing any covering from
the airframe, please ensure that you secure the
cut edge with CA or similar cement. This will
ensure the covering remain tight.
Cut away only the
film both the top and
bottom*
X
To muffler
Filler tube
To engine
3x35mm screw
Rubber stopper
7-Fuel tank
Ensure that the fuel tank clunk does not touch the rear of the fuel tank.
Checking for leaks - block the vents and blow into the
feed - if in doubt submersing the tank in a blow of
water will show up any problems.
Blow
Water
2
1
3
After confirming the direction . Insert this assembly, clunk end
first, into the fuel tank and tighten and screw the fuel tank cap on
firmly.
Carefully install the fuel tank
to ensure that they will not
shift during flight (secure the
fuel tank in place using foam
padding).

Rudder rod
Elevator rod
Throttle rod
Nose gear rod Rudder servo
Throttle servo
FUSELAGE - BOTTOM VIEW
9-Servo
BATTERY
AREA
Fuel tank
Switch
10- Linkage Rudder - elevator linkages
Rudder push rod
Elevator push rod
To rudder
servo
To elevator
servo
Steel clevis
11- Windshield
AB
AB
Elevator servo

FUSELAGE - BOTTOM VIEW
12-Battery - receiver
1- Secure foam padding with rubber bands or tape as required
2- Shift the location of the receiver and battery pack as needed
to obtain the specified CG.
3- Carefully install the receiver and battery pack to ensure that
they will not shift during flight.
10mm 25mm
AILERON STROKE ELEVATOR STROKE RUDDER STROKE
10mm
12mm
12mm 25mm
13-Control surface
CG
WARNING ! Securely install the receiver and power pack, ensuring
they will not come loose or rattle during flight.
Never fly before checking the Cg’s required position.
In order to obtain the CG specified, reposition the receiver and power pack
89mm
Wing center section
14-Balance
WARNING:
- In the beginning, first time fliers should always be assisted by an experienced flier and never fly alone.
- This model aircraft is designed to be powered by a 2 cycle .40 ~ .46 engine or a 4 cycle .48 ~ .52 engine. Installing
a more powerful engine than specified or flying the MEGA FLY aggressively may lead to serious damages and
accidents.
WARNING: Please do not clean your model with pure alcohol, only use liquid soap with water or use class
cleaner to clean on surface of your model to keep the colour not fade.
ELEVATOR AILERON
RUDDER
16-Pre-Flight check Check that each clevis is securely snapped into position.
Check that all servo horn screws are tight.
Charge the transmitter and receiver battery.
BATTERY
AREA
Switch
RECEIVER AREA