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ELEVATOR SERVO INSTALLATION
Note: The G202 using dual elevator servos requires the use of
a servo reverser Y-harness, which reverses the signal to 1 servo
and not two, allowing them to work together. There are several
servo reverser Y-harnesses on the market (Jomar, Maxx
Products, etc). We are using the Jomar SR2YJR.
Repeat steps from "III. Elevator Servo Linkage and Control Horns"
for other side.
Connect the 12" extension lead to the second elevator servo, and
attach the server reverser Y-harness to both elevator servo pigtails.
Tape all servo extension connectors to prevent them from coming
loose during flight.
IV. Rudder Servo and Linkage Installation
Install the rudder servo as pictured.
Place the aluminum rudder control horn plate onto the exposed
space on the bottom of the rudder and mark the holes with a pen or
marker. Using a 1/16" bit, predrill the holes 1/2" deep. You can keep
from drilling too deep by running a piece of masking tape around your
drill bit at the desired depth.
Install the aluminum rudder control horn plate onto the bottom of
the rudder using the 2.3mm self-tapping screws provided.
Place a control horn on right hand side of the rudder and mark the
holes, remove the control horn and drill the holes through the rudder.
Attach the control horn using 2x22mm bolts. On the other side of the
rudder, use a second control horn in place of a backing plate.
Thread the nuts and tighten down bolts.
Use a pen or marker to mark the exit hole for the pull-pull cable
below the stabilizer, and use an Xacto to remove balsa and covering.
1
Locate the Z-bend end for the pull-pull rudder. There will be two
Z-bend ends and two straight threaded ends. The threaded ends go to
the control horns on the rudder and the Z-bends go to the servo in the
airplane. You will also have two pieces of pull-pull cable and four small
brass tubes which you will use to crimp on the cable after it is knotted.
Slide one of the brass tubes onto one end of the cable, then slide
the Z-bend end onto the same end as Fig. 1. Route the cable and slide
the cable end to the brass tube as Fig. 2. Slide the Cable end to brass
tube again as Fig.3.Adjust the length of cable shorter than 1/2" at the
Z-bend end and and brass tube. Now crimp the tube tight with a pair
of pliers.
Drop the Z-bend end through the exit hole in the tail and through
the fuselage. Next attach the Z-bend end to the control horn on the
rudder servo. Then use a piece of masking tape to hold the cable to
the fuselage to keep it from sliding all the way through.
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3
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