Install The Wing - GREAT PLANES Sukhoi SU-31 Instruction Manual

3. Remove the servo arm from the servo. Insert the
elevator pushrod into the elevator control horn. Re-install
the servo arm and screw-lock connector on the servo. Do
not install a push-on retainer ring on the screw-lock
connector. Use your radio system and determine which hole
in the servo arm will give the desired control throw.
4. Install the push-on retainer ring onto the screw-lock
connector. Secure the pushrod to the screw-lock connector
with the 2mm x 5mm screw. Cut off the excess pushrod,
leaving about 5mm protruding.
5. In the same manner, install the long rudder pushrod.

Install the Wing

Before proceeding, iron the covering on the wing so that
it is firmly glued to the center ribs and the servo openings.
1. Cut a 9/16" [14mm] wide strip of covering material from
the center of the top and bottom of the wing. Use the two center
ribs as a guide to mark the wing prior to cutting the covering. Be
careful not to cut into the wood under the covering.
2. Cut the covering from over the servo bays on the wing.
Hinge Material
3. Hinge the right aileron to the wing with the included
9/16" x 20-1/2" [14mm x 520mm] hinge material. Attach the
hinge material to the trailing edge of the wing first, then
carefully place the aileron in position. Try to leave a slight
gap of about 1/32" [0.8mm] between the wing and aileron.
Once the aileron is in the proper position, press the hinge
material firmly onto the wing and aileron. Note: It is fairly
easy to reposition the aileron if the hinge material has not
been firmly pressed into place.
When you install the aileron servos in the following steps you
will need to install a short servo extension wire or a Y-harness.
If you have a computer radio and intend to program the
ailerons as "flaperons", you will need to install a 6" [152mm]
extension wire on each servo and plug each aileron servo
into a separate channel on a five (or more) channel receiver.
Otherwise, a Y-harness can be used on a four channel
receiver. The installation shown in the photos used Futaba
S3107 servos and a Futaba "dual extension cord"
(or Y-harness) (FUTM4130). This resulted in a very neat
installation with little excess wire, but did require some careful
planning to get the servo wires plugged into the extension
cord. A standard Y-harness could also be used, but there
would be a considerable amount of excess wire to deal with.
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