GREAT PLANES SU-31 Instrukcja obsługi - Strona 11

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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.