FLYFANS SUKHOI SU-27 FLANKER User manual

SUKHOI SU-27 FLANKER
1
64mm EDF RC JET
KIT TYPE
RECOMMENDED BATTERY
SPECIFICATIONS
Wingspan: 930mm
Length: 1380mm
Dry weight: 800g
Flying weight: 2300g (Full loading)
Wing loading: 72g/dm²
ELECTRONIC
Power System: 2840/2300KV 64EDF x 2
ESC: 40A ESC x 2 + 5V5A BEC
Servos: 9g servos x 7
Battery: 3300-4700mah 6s Lipo
Radio: 6 Channel TX and RX
3300-4700mAh 6S High Discharge Lipo
KIT
40g Retracting
Shock Absorber
Landing Gear
PNP
KIT
9g Metal Servo x 5 (Installed)
9g Servo x 2 (Installed)
40A ESC x 2 (Installed)
6S: 2840-2300KV 64mm EDF x 2 (Installed)
KIT + Servos
KIT
9g Metal Servo x 5 (In-
stalled)
9g Servo x 2 (Installed)

Before assembling this product, please carefully inspect the following parts. If any are missing
or damaged, please contact the dealer as soon as possible. Provide the names and codes of
the missing or damaged parts.
Please note that internal items may vary in di󰀨erent congurations.
1
2
48
9
10
11
12
13
14
3
56
7
15
16
SU-27
2
CONTENTS OF KIT
1. Fuselage*1
2. Left Wing*1
3. Right Wing*1
4. Vertical stabilizer L*1
5. Vertical stabilizer R*1
6. Stabilator L*1
7. Stabilator R*1
8. Tail Boom*1
9. Nosecone *1
10. Main Wing Spar*1
11. Elevator Pushrods*2
12. Aileron Pushrods*2
13. Rudder Pushrods*2
14. Front Wheel Pushrods*2
15. Velcro*1
16. Screws for wings*4 (Silver)
Screws for EDF*4 (Black)
Screws for Stabilator*2 (Black)

Adjust the pushrod length and attach it to
the servo arm.
Set 9g servo to neutral point and screw on
Servo arm. Glue the servo into the slot on
the Rudder.
It is recommended to use servos with
a wire length of 10cm. Both the left
and right rudders should use standard
servos.
1.
2.
Set 9g servos to neutral point and
screw on Servo arm. Glue servo into
the slot.
Adjust the pushrod length and attach
it to the servo arm.
Adjust the pushrod length and se-
cure the pushrod. Ensure that the
control surface is aligned with the
wing’s edge. Install the aileron servo
on the other side following the same
procedure.
Aileron Servo
4.
5.
Install the tail servo on the other side in the
same way.
3.
SU-27
3
Model Assembly
Rudder Servo
HornsServo

Open the battery hatch and power up the landing gear.
Glue 9g servo into slot. Set it to neutral point and screw on Servo arm.
6.
7.
SU-27
Ajust pushrods length then link the Servo
arm and Front Wheel Control Horn. Then
glue the plastic cover to the landing gear
compartment.
8.
Remove the EDF cover and glue stabilator
servos into the slot.
9.
4
Front Wheel Servo
EDF & ESC

Glue the stabilator servo cable into the
preset wire groove.
10.
After connecting the stabilator servo with a Y-cable, thread the wires through the inside of the
fuselage to the battery compartment.
Secure the two EDFSs with screws. Then, attach the EDF covers and secure it with screws.
11.
13.
SU-27
Place the ESC in ESC compartment, then connect the motor and ESC. Test the motor for cor-
rect fan rotation.
12.
5

Use glue to attach the ESC compartment cover.
Plug in the rudder servo connectors. After applying glue to the white area, attach both vertical
tail ns to the fuselage.
14.
15.
SU-27
Vertical stabilizer
Insert the left and right Stabilator and secure them onto the mounts with screws.16.
Power the servos to their neutral positions, adjust the pushrod lengths as needed, then install
the ball links and pushrod retaining clips.
17.
6
Stabilator

Insert carbon spar into fuselage.
Install both wings, connect cables and
secure wings with screws.
18.
Connect the receiver following the plug label indications.
Then, place the receiver and cables in the space at the rear of the battery compartment.
Attach the Nosecone to the fuselage, ensuring that the magnets are properly attached. Glue
the Tail boom to the fuselage. Then the assembly job is done. Enjoy!
19.
20.
Nosecone & Tail Boom
SU-27
7
Main Wing
Install Receiver

Model Setup
Dual Rate
The recommended Center of Gravity (CG) is
145mm from the leading edge of the main wing
with the battery pack installed.
The center of gravity can be adjusted by moving
the battery forward or aft.
Note
Having the correct center of gravity is critical to
achieving proper ight characteristics.
1. Before powering on the aircraft, turn on the transmitter’s power and
ensure the throttle stick is in the zero position.
2. Open the battery hatch and remove the Velcro strap from the battery
tray.
3. Place the battery inside the battery compartment, with the power
supply cable toward the rear end of the plane. Secure the battery
using the Velcro strap.
Flight Setup
Battery installation
145mm
SU-27
Control
Surface High Rate Low Rate
Elevator 100% 75%
Ailerons 100% 65%
Rudder 100% 50%
8
Check the C.G.
We recommand dual rate setting for better ying experience.
When taking o󰀨 and landing, Elevator and Aileron in low rate
will make smooth move;
When taxing on ground, Rudder in high rate will get smaller
turning diameter;
When ying in air, low rate will make ight more stable. High
rate is only for extreme maneuvering.
Bank Right
Bank left
Steer Right
Steer left
Climb
Descend
Ailerons Elevator Rudder

Control Surface Alignment
1. Power on and bind the transmitter with the receiver.
2. Ensure that the transmitter throttle and all trim switches
are in the zero position.
3. From a top-down view, make sure the rudder is aligned
with the vertical tail n. If adjustment is needed, rotate
the ball link on the linkage to change the length between
the servo arm and the control horn for adjustment.
4. Align the trailing edge of the aileron with the trailing edge
of the wing. Adjust the pushrod as needed.
5. The Stabilator should have a slight up elevator when
centered. In the neutral position, the leading edge of the
Stabilator should align 2mm below the panel line in the
fuselage, as shown in the diagram on the right.
Trouble shooting
SU-27
Neutral position of Stabilator
2mm
Problems Probable Causes Solutions
Aircraft will not respond to
the throttle but responds
to other controls.
• ESC is not armed.
• Throttle channel is reversed.
• Lower throttle stick and throttle trim to
lowest settings.
• Reverse throttle channel on transmitter.
EDF noisy or vibrating
excessively.
• Damage or malfunction of spin-
ner, blades, motor, etc.
• Loose motor mount or EDF
installation.
• EDF has high-speed rotating compo-
nents. Damage or malfunction can cause
imbalance. It is not recommended for
users to repair themselves; Factory repair
is recommended.
• Tighten screws and secure motor mount
and EDFs.
Reduced Flight time or
aircraft underpowered.
• Battery not fully charged
• Low discharge rate
• Battery malfunction
• Completely recharge battery.
• Replace with high discharge battery.
• Replace battery.
Control surface does not
move, or is slow to re-
spond to control inputs.
• Control surface, control horn,
linkage or servo damage.
• Wire damaged or connections
loose.
• Replace or repair damaged parts and
adjust controls.
• Do a check of connections for loose
wiring.
Controls reversed. • Channels are reversed in the
transmitter.
• Do the control direction test and adjust
controls for aircraft and transmitter.
Sudden power reduction
during Flight
• ESC enters low-voltage protec-
tion mode.
• Motor or battery malfunction.
• ESC enters overheat protection
mode.
• Immediately land and check battery
voltage.
• Check components such as battery,
transmitter, receiver, ESC, motor for faults
• If the ESC temperature is too high due
to high environment temperature or
prolonged continuous Flight, allow it to
cool down.
Receiver LED blinking
slowly • Power loss to receiver.
• Check connection from ESC to receiver.
• Check servos for damage.
• Check linkages for binding.
9
Neutral position of Aileron and Rudder