Connect The Control Linkages - GREAT PLANES Sukhoi SU-31 Instruction Manual

8. Glue a brace to the bottom of the stab, one on each side
of the fuselage. The narrow end faces the front of the model.
9. Glue the vertical fin and balsa rudder post to the model
with 6-minute epoxy. Be sure the vertical fin is perpendicular
to the stab.

Connect the Control Linkages

The smaller micro and mini servos this model requires
usually do not include the long servo arms needed for
high rate throws on this model. Depending on the servo
you are mounting the extended servo arm on it my be
necessary to sand the face of the servo arm flat to make
a good gluing surface.
1. Attach the servo arm extender to the servo arm with
the servo screw. With the radio on position the servo arm
extender in the correct position. Glue the extender to the
servo arm with thin CA.
Caution: In the following steps you will be using screw-
lock connectors to connect the pushrods from the control
horns to the servo arms. Before installing the Push-On
Retainer Ring on the screw-lock connector, you should
first turn on your radio system and check which hole the
screw-lock connector should be installed in to get the
desired control throw. Once the push-on retainer ring has
been installed, it can't be removed without damaging it.
2. Temporarily install the servo arm and screw-lock
connector on the elevator servo. Do not install a push-on
retainer ring on the screw-lock connector. Insert the short
elevator pushrod in the hole in the screw-lock connector and
sight down the pushrod to determine where the elevator
control horn should be mounted. Cut a slot in the elevator
for the control horn and glue it into place with 6-minute epoxy.
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