Servo Introduction - Freewing MIG-21 FISHBED User Manual

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.
If you choose to use another brand of servo, please
refer to the following list to ensure it is the correct size .
Installing position No. Pos./Rev.
Nose gear steering Positive
1
Aileron(L) Positive
2
Aileron(R) Positive
3
Flap(L) 4 Positive
Flap(R) 5 Reverse
Elevator(L) 6 Positive
Elevator(R) 7 Reverse
Rudder 8 Positive
Center of Gravity
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 .
MIG-21MF FISHBED
Item No.:FJ210
1
Servo Cable Length
100mm
950mm
950mm
800mm
800mm
1050mm
1050mm
1050mm
265mm
(10-1/2")
8
1.000 比例
2
6
4
5
7
3
10