Great Planes Douglas DC-3 EP ARF - GPMA1155 - Manual (Page 8)

For the following steps start with the left wing panel
so your progress will match the photos.
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6. Test fit the assembled wing joiner into the wing
panel, then the center section. Be certain the joiner is
installed upright with the arrow pointed up. The tapered end
with the horizontal arrow points toward the wing tip. Also
make sure that the joiner slides in all the way, allowing a
flush fit of the wing panel and the center section with no
gaps. If necessary, sand the joiner for a good fit.
❏ ❏
7. Securely tie the strings for the aileron extensions
together as indicated in the above photo.
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8. Remove the joiner. Using 30-minute epoxy,
thoroughly coat the inside of both pockets where the joiner
fits. Coat the joiner half that goes into the left wing panel. Then
insert the joiner into the left wing panel. Coat the protruding
end of the joiner, the root rib on the wing panel and the root
rib of the center section with epoxy. Join the left wing panel
and the center section together. Be sure to pull the strings
through as you slide the wing panel together with the center
section. Be careful not to get any epoxy on the strings.
❏ ❏
9. Wipe away excess epoxy that squeezes out from
between the joint with paper towels saturated with alcohol.
Use masking tape on the top and bottom to hold the joint
tight as shown. Be certain the root ribs align accurately. Do
not disturb the wing until the epoxy has fully cured.
❏
10. Repeat this process to glue the right wing panel in
place in the same manner.
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1. Install the two motors onto the motor mount face
plates using the four supplied 2.5mm x 7.5mm screws and
2.5mm washers.
❏
2. . This is a good time to test the motors. Do this before
installing the propellers. First make sure the transmitter and
ESC switches are turned OFF. Using the above picture,
connect the wires from the ESC to all of the labeled
components (motors, receiver, etc.). Switch on the
transmitter and make sure the throttle stick is at idle. Turn on
the ESC switch. Slowly advance the throttle stick to full
throttle. Move the throttle stick back to the idle position. The
system is now engaged and operational. Advance the
throttle stick and verify that both motors are working.
❏
3. Tie the strings already installed in the wing onto the
connectors. Then place the wires into the center section
Mount the Motors
8