Freewing MiG-21 User Manual page 4

PNP Install instruction
Traction steel wire use instruction
Through investigation, excessive servo extension line will increase the risk of poor contact joints, and lead to the
servo outages caused flight accidents. Because of MIG-21 large and flat trough interior space, we don't use the
servo extension wire in this jet. As the below photo shown, package includes a traction steel wire, we can use it to
pull the main wing/elevator/rudder servo cables to the battery compartment.
Prepare work before install
1.Open the cockpit, loosen the screws which fixed on the battery
tray, and remove the battery tray.
Screw
Install fuselage
Install main wing
1.Insert the carbon tube A and B into fuselage.
Carbon tube A
(Ø8x400mm)
3
(KA3x10mm 4pcs)
Battery tray
2.Use traction steel wire to pull the elevator servo cable to battery compartment.
Carbon tube B
(Ø6x345mm)
2.Remove the intake plate.
1.Use glue to attach front\rear fuselage.
2.Along the fuselage wire trough port, insert the main wing servo
cable to the fuselage.
Intake
Elevator Servos wire
main wing trough port
MIG-21MF FISHBED
Item No.:FJ210