First designed in 1 95 3, the MiG-21 is widely renowned as a classic Cold War er a brute and holds the distinction
of being the most produced supersonic jet fighter in the world. More than 11,000 MiG-21s of different variations
have flown for over 6 0 countries over a period of mo re than 60 years. In f ac t, the unmistakable outline of the Mi G21 can still be seen today in the sk ie s of over 15 countries that still oper at e this hi st oric warplane. Th e MiG-21 ha s
earned its place i n av ia ti on h istory as a versatile workhorse and venerable foe.
Overview
Dominate the ski es with Freewing’s 1/9 scale MiG-21! Its impressive 1730mm length makes this MiG-21 one of
Freewing’s longest mod el a ircraft. Its removable wings, horizon ta l stabilizer, and vertical stabilizer ma ke transport
very e as y. Even t he nose c on e and pitot tube are re mo va ble! Freewing has recreated m an y scale details of the
MiG-21 “MF” variant, an d the ai rc ra ft is powered by an 80mm 12-blade EDF and an all-new 3 53 0- 18 00KV outrunner motor and 1 00 A ESC. Newly designed metal ge ar digital servos control the ail er on s, flaps, elevators, and
rudder, and an i nt eg ra ted circuit boa rd simplifies wiring in the la rg e battery bay. M ag ne ti c fuel tanks and the i co ni c
“blisters” throughout the f us el ag e help complete the loo k and feel of the menacin g MiG-21. Although an 80mm
class aircraft, the Freewing MiG-21 features th e retr ac ta bl e landin g gear of a 90mm cl ass ai rc ra ft . Durabl e
aluminum trail in g li nk s tr uts and tall wheels allow operation on short grass fields.
Flight Features
The Freewing MiG-21 is suitable for intermediate and advanced p il ots with EDF flying e xp erience. The model’s
strong th ru st and flaps shortens the takeoff distance to 30 m et ers. Optimized design allows the F re ew in g MiG-21
to fly sta bl y a t both fast and slow speeds. In fact, the ai rc ra ft ca n maintain a slow “high alpha” attitude of up to 40
degrees withou t st al li ng . The delta wing and swe pt t ai l gi ve t he aircraft crisp responsiveness but gentle handling.
Al so , the battery bay w as designed to accommodate an optional Freewing Gyro E51, sold separately, to further
supplement the stable fly in g characteristics of the Freewing MiG-21. Experience the th ri ll of a 4 0 degree pass w it h
ease!
Color Scheme Introduction
Freewing presents it s M iG-21 in two color schemes. The class ic “Soviet Silver” scheme includes d ec al s from
four countries in si de the bo x to allow pilots to customize their m od el aircraft. A “High Vis” sc heme is also available
that features the bl ue /w hi te /grey color scheme of the MiG-21-93 variant for increased visibility in the sky.
1. This is not a toy! Operators should have some basic experience. Beginners should operate only under the guidance
of a professional instructor.
2. Before beginning assembly, please read through the instructions and carefully follow them throughout the build.
3. Freewing and it's vendors will not be held responsible for any losses due to improper assembly and operation.
4. Model airplane operators must be at least 14 years of age.
5. This airplane is made of EPO foam material, covered with surface spray paint. Don't use chemicals to clean as it may
cause damage.
6. You should avoid flying in areas such as public places, areas with high voltage power lines, nearby highways, airports
or in other areas where laws and regulations clearly prohibit flight.
7. Do not fly in bad weather conditions, including thunderstorms, snow, etc.
8. Lipo batteries should be properly stored in a fire proof container and be kept at a minimum of 2M distance away from
flammable or explosive materials.
9. Damaged or scrap batteries must be properly discharged before disposal or recycling to avoid spontaneous
combustion and fire.
10. At the Flying Field, properly dispose of any waste you have created, don't leave or burn your waste.. Ensure that your
throttle is in the low position and that your radio is turned on before connecting the Lipo battery.
11. Ensure that the throttle is in the lowest position and transmitter is turned on, before connecting a Lipo Battery to the
ESC of the aircraft.
12. Do not try to catch the airplane while in flight. Wait for the airplane to come to a complete stop before handling.
Index
1.Introduction
2.Product Basic Information
2. Package list
3.PNP Assembly Instructions
6. Servo installation instruction
7. Landing Gear assembly/installation
8. Control board use introduction
9. 3-Axis Gyro use introduction
1
9.Battery Installation.
10.Servo Introduction.
10.Center of Gravity
11.Power system introduction
11.Motor Parameters
12.Control direction test
13.Dual Rates
MI G- 21MF FIS HB ED
It em No .:F J210
Page 3
比例 1.000
800mm( 31.5")
755mm(29.73 in.)
1730mm
1605mm(63.2in.)
(68.1" )
The parameters stated here are derived from test results using our
accessories. If you use other accessories, the test results will differ. We
c
annot provide technical support if you have a problem when using other accessories.
Package list
Standard Version
Wingl oadin g:123 g/dm
Motor:3 530-1 800 KV outr unner m oto r
Fan:80m m 12-Bl ade f ans
ESC:100 A UBEC 5A
Servo s:9g Digi tal M G
Wei ght:218 0g
Thrus t:3000g
(8pcs )
2
(W/O ba ttery )
Upgrade Version
Wingloa di ng:125g /d m
Motor:365 8-1820K V in runner mo to r
Fan:80mm 12 -Blade fans
ESC:100A UB EC 5A
Servos: 9g Di gital MG
(8pcs)
Weigh t:2215g
Thrust: 32 00g
2
(W/O ba ttery )
Different types of kits will come with certain specific parts. Refer to the list of parts for your type of kit in the chart below.
No.
Spare part name
Nose\Re ar fuselag e
1
Mainwin g
2
Horizon tal tail
3
Vertical ta il
4
Oil-tan k&pylons
5
PNP
Pre -in sta lle d all
electr oni c par ts
Pre -in sta lle d all
electr oni c par ts
Pre -in sta lle d all
electr oni c par ts
ARF Plus
Pre -in sta lle d
servo
Pre -in sta lle d
servo
Pre -in sta lle d
servo
ARF
No elect ron ic
equipm ent
No elect ron ic
equipm ent
No elect ron ic
equipm ent
No.
Spare part name
Carbo n fiber
6
7
Pilot t ube/A nte nna
Ventra l Fins
8
Pushr od/Sc rew s
9
10
Manua l/Dec als
PNP
ARF Plus
MI G- 21MF FIS HB ED
It em No .:F J210
ARF
2
Page 4
PNP AssemblyInstructions
Steel wire use instructions
Our tests show that excessively long servo extension lines increase the risk of poor connections that can lead to servo
brown outs or failure, causing accidents during flight. Instead, this kit contains a steel wire that can be used to pull the
main wing/elevator and rudder servo wires through the airplane to the battery compartment, eliminating the need for
extension wires.
Pre- Installation Preparation
1.Open the hatch and loosen the screws which hold the battery tray in
place. Remove the battery tray.
Screws (KA3x10mm 4pcs)
Battery t ra y
Fuselage Assembly
2. Re mo ve t he i ntake plate.
Intake
1.Use the provided glue to attach front\rear
fuselage parts.
There is EPO glue provided with the kit. Apply the glue to the fuselage parts and allow it to
sit for 2 minutes. Press the two pieces together several times and allow the glue to get 'stringy'.
Push the two parts together a final time and allow the glue to set.
2.Use the steel wire to pull the elevator servo cables to the battery compartment.
B
a
t
t
e
r
y c
o
Steel wire
m
p
a
r
t
m
e
n
t
Back of fus e
l
age
Main Wing Installation
1.Insert the carbon tube A and B into fuselage.
2.insert the main wing servo cables into the fuselage wire trough
and into the ports.
Elevator Servo wires
main wing t ro ugh port
Carbo n tube A
(Ø8x400mm)
3
Carbo n tube B
(Ø6x345mm)
MI G- 21MF FIS HB ED
It em No .:F J210
Page 5
PNP Assembly Instructions
3.Use 4 screws to secure the main wing.
4.Use the steel wire to pull the left and right wing connection wires to the battery compartment.
Battery c o
Screws (PM3x6 4pcs)
mpar
tme
nt
Main wing s er vos wire
Landing g ea r wire
E
SC
5.Use pla st ic cover to c lose the main w ing connect ion cable
trough on t he i nner wall .
Elevator and Rudder Installation
Elevator Installation
A-Tail fuselage
B-
Screws (KA2.6x84pcs)
1. Place the elevator onto the tail of the fuselage
2. Use 2 screws to
secure the elevator
3. Repeat the above steps to install the other
elevator.
6.Use glue and screw to secure the intake plate.
Screw
A
B
(FA3x8mm)
MI G- 21MF FIS HB ED
It em No .:F J210
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Page 6
PNP Assembly Instructions
Rudder Installation
1.Use the steel wire to pull the rudder servo cable through to the
battery compartment.
2. Use 4screws to secure the rudder.
A. Vertical tail
fuselage
B. Tail
C. Servo wire
D. Screws (FA3x8 4pcs)
D
Nose cone, pitot tube, wing fence and drop tank pylons Installation
A -
Nose cone
B -
Antenna
C-
Pitot tub e pa rt 1
D-
Carbon tu be
E -
Pitot tub e pa rt 2
F -
Plastic p ar t 1
G-
Plastic p ar t 2
H-
Wing fenc e
I -
Fin
J -
Pylon
Drop tank
K -
(left /righ t)
Carbon tube
D
C
5x180 mm
(Ø
A
B
)
A
B
E
C
H
F
K
I
G
J
Note:
1.
After finishing the above steps, depending on the model of the control board, insert all servo cables to the control board.
2.
Finally use 4 screws to secure the battery tray . (all servo cables run under the battery tray)
5
MI G- 21MF FIS HB ED
It em No .:F J210
Page 7
Servo Installation Instructions
Flap and Aileron Servo Installation
1.
Use a servo tester or radio to center the
servo.
2.
Use glue to install the servos and control
hornsto the main wing.
3.Feed the servo cables through the trough,
after all the cables are in place, apply the
decal over the trough.
4.
Feed one end of the pushrod into the
aileron servoarm and adjust its length.
Snap the clevis to the aileron control
horn's ball link.
5.
Feed one end of the pushrod into the
flap servo arm and adjust its length.
Snap the clevis to the flap control
horn's ball link.
6.
Repeat the above four steps for the
other aileron and flap servo.
Elevator Servo Installation
1.
Use a servo tester or radio to center
the servo arm.
2.
Use glue to intall the servos on the
elevator servo mounts.
3.Feed one end of the pushrod into the
servo arm and adjust its length. Snap
the clevis to the elevator control horn's
ball link.
4.Repeat the above steps to install
the servo on the opposite side.
A - 9g servo
B - Main wing pushrod
C - Aileron horn
D - Main wing servo tro ug h
D
wire
os
v
Ser
A - 9g servo
B - Elevator horn
C - Elevator pushro d
B
B
A
C
C
A
Rudder Servo Installation
1. Use a servo tester or radio to center
the servo arm.
2. Use glue to install the servo to the
Horizontal Stabilizer and the control horn
to the rudder.
3. Feed the servo cables into the trough.
4. Feed one end of the pushrod into the
servo arm and adjust its length. Snap
the clevis to the rudder control horn's ball
link.
Aileron p us hrod size
90mm
(3- 1/2")
Flap push ro d size
80mm
(3- 1/8")
Elevato r pu shrod siz e
Pushro d dia met er Ø1 . 5m m
158mm
(6- 1/4")
Rudder pu sh rod size
58mm
(2- 5/16" )
MI G- 21MF FIS HB ED
It em No .:F J210
Pushro d dia met er Ø1 . 5m m
A - 9g servo
B - Rudder ho rn
C - Rudder pu sh rod
Pushro d dia met er Ø1 . 5m m
Pushro d dia met er Ø1 . 5m m
A
Aileron p us hrod moun ting hole
1
2
3
Flap push ro d mountin g hole
1
2
3
Elevato r pu shrod mou nting hole
1
2
3
Rudder pu sh rod mount ing hole
1
2
3
C
B
1
2
3
1
2
3
1
2
3
1
2
3
6
Page 8
Landing Gear
Nose Landing Gear Assembly
Assemble and disassemble the nose landing gear according to the following photos.
Screw
A -
Nose wheel
Nose gear axle
B -
U-shape slant supporting rod
CD-
E-clip
Pin
E -
E-Clip
F -
Nose gear shock absorber active rod
G-
Spring
HI -
8-shape connecting arm
J -
Screw (PM2x3 1pc)
A
B
E
(Ø2.0pcs)
(Ø3.5X9.2mm 2pcs)
(Ø1.5mm 2pcs)
C
F
D
K L MN OP QR S T -
H
E1
J
(PM2x4 1pc)
Nose gear main supporting rod
E-clip (Ø1.5mm)
(Ø3.5x9.2mm)
Pin
Nose gear steering arm
Screw
(M3x3mm)
Nose gear main rod
Nose gear steering control ring
Nose gear steering rod
E-clip
(Ø2mm)
I
F1
M
Retract controller
U-
Nose landing gear set
V-
W-
Screws
Nose landing gear mount
X-
Nose steering pushrod
AB-
9g servo
AC-
Screws (PWA2x8mm 2pcs)
AD-
Nose landing gear cover
AE-
N
(FA3x8 4pcs)
O
P
Q
T
U
R
S
Step
G
Step
1234
V
K
7
L
StepStepStep
StepStep
5
W
X
AE
6
65mm
( 2- 9/1 6")
AD
AB
AC
7
MI G- 21MF FIS HB ED
It em No .:F J210
Page 9
Landing Gear Installation
Rear Landing Gear Assembly
Assemble and disassemble the rear landing gear according to the following photo.
Main gear axle
A -
Main wheel
B C -
Screw
D -
Rear gear slant supporting rod
E -
Pin
(Ø3.5X9.2mm 1pc)
F -
E clip
G-
Main gear trunion A
H -
Screw
I -
Spring
J -
Screw
K -
Main gear main supporting rod
L -
Main gear main rod
M-
Grub screws (M4x4mm)
N -
Retract controller
O-
Nose gear door
R -
Screws (PM2x5 2pcs)
(M3x3mm)
(Ø1.5mm 1pc)
(M4x3mm)
(PM3x4 1pc)
S-
Main landing gear set
T -
Screws (FA3x8 4pcs)
Main landing gear mount
U-
A
B
B
C
D
E
F
G
Step
1
O
Step
5
S
T
U
H
L
I
J
Step
K
2
N
M
Step
M
3
Control Board Introduction and Use
Landing G ea r
Rudder/Nose steering
Elevator
Aileron
Flap
(power to the receiver)
Step
4
Landing G ea r
Rudder/Nose steering
Elevator
Aileron
Flap
Landing gear
Rudder
Elevator
Aileron
R
Flap
Refer to the model of the control board, insert all
the connection cables to the control board.
( Not including throttle, the throttle cablegoes directly to
the receiver .)
When you use a gyro,
Elevator \ Aileron \ Rudder channels
from the Control Board connect directly
to the gyrooutputs, then from the gyro
inputs to the receiver. All the other
channels will connect directly to the
receiver from the Control Board.
Contr ol boar d
MI G- 21MF FIS HB ED
It em No .:F J210
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Page 10
3-Axis Gyro Introduction and Use
Use 4 screws to secure the gyro onto the board at the front of the
battery compartment. Make sure the gyro decal is facing the nose cone
when installing.
Screws (PA2.3x8mm)
The gyro was factory tested and set up at default sensitivity. You can
fine tune it according to your preference and flight conditions. Refer to
the photo to reset factory default settings.
Battery Installation
Hatch
Battery
Pus
h b
a
ck the le v
to open t he co c
er
kp
it
Battery t ra y
Ve
lcro
Before connecting the battery to the ESC, please
switch on the transmitter power and make sure the
throttle stick is in the lowest position. Engage the kill
switch if you have one assigned.
9
Install the batteryto the front of fuselage,
and use the velcro strap to
secure it.
Battery Hatch size : L=280 , W=66 , H=70 (mm)
The recommended battery size and
discharge rate is:
6S 22.2V 4000mAh~6S 22.2 5500mAh
Dischar ge r ate of C 35C>
MI G- 21MF FIS HB ED
It em No .:F J210
Page 11
Servo Introduction
A servo or reversed servo is defined as
follows:
When the servo input signal changes from
1000ųs to 2000ųs, if the servo arm rotates
clockwise, it's a positive servo. If it rotates
counter clockwise, it's a reversed servo.
Positiv e
Positiv e
Positiv e
Positiv e
Reverse
Positiv e
Reverse
Positiv e
of servo
Servo Cable Length
100mm
950mm
950mm
800mm
800mm
1050mm
1050mm
1050mm
If you choose to use another brand
to the following list to ensure it is the correct size .
refer
Installing position
Nose gear steering
Aileron(L)
Aileron(R)
Flap(L)
Flap(R)
Elevator(L)
Elevator(R)
Rudder
No.
Pos./ Rev.
1
2
3
4
5
6
7
8
Center of Gravity
, please
2
4
6
1
5
7
3
8
Correct center of gravity is directly related to the success of the initial flights.Refer to the following CG diagram to adjust
your plane's center of gravity.
- You can move the battery forward or backward to
adjust the center of gravity.
- If you can not adjust the CG by moving the battery,
you can also use some other suitable material weight
to counterweight, to achieve the correct CG .
比例 1.000
265mm
(10-1/2")
MI G- 21MF FIS HB ED
It em No .:F J210
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Page 12
Power System Assembly
Motor spinner
-
A
-
Screws
B
80mm ducted fan metal
-
C
frame for outrunner motor
-
D
3553-1800KV motor
-
E
90mm 12-blade ducted fan
-
F
Spinner
-
G
-
H
Screw
Screws
(PM3×10mm 1pc)
( 3×3mm 2pcs)M
G
F
E
Refer to the following photo to install power system and ESC.
A-
Screws (
B-
ESC fixed wood piec e1
ESC
C-
ESC fixed wood piec e2
D-
Screws (
E-
80mm EDF power syst em
F -
PM3x25mm 2pcs)
PWA 3x 8mm 4pcs)
B
A
G-
Ducted fan cover
H-
Screws
I -
Ventral Fins
Ventral Fins mount
J -
Screw
K -
C
(FA3x8mm 2pcs)
(KA2.6x8mm 1pc)
C
D
B
A
H
Note: When you have a battery connected to
the ESC , do not touch either by hand to avoid
accidental injury. When testing EDF, use a safety
test stand.
E
F
D
G
Motor parameters
MO035302
1
Step
H
Step
3
I
J
K
Step
Step
2
4
Unit: mm
MO035 302
11
1800R PM /V
86
3000
100A
MI G- 21MF FIS HB ED
It em No .:F J210
Page 13
Control direction test
After the build is complete, power up the radio and connect a fully charged battery to the ESC. Use the
radio to ensure correct control direction.
Aileron
Stick Lef t
Elevator
Stick Back
Rudder
Stick Rig ht
Stick Forward
Stick Lef t
Optional Flaps
Flaps dow n
Stick Rig ht
MI G- 21MF FIS HB ED
It em No .:F J210
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Page 14
Dual Rates
According to our test results, the following rates proved to be a good starting point. Low rates are
good for initial flights or less experienced pilots. High Rates will be more sensitive to control
inputs After initial flights, adjust the rates to suit your own style.