Install The Aileron Servos & Pushrods - GREAT PLANES Super Chipmunk Instruction Manual

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7. Test fit the right flap to the wing with three hinges.
Using the same procedure used for the ailerons, join the
flaps to the wing.
8. Repeat steps 1- 7 for the left wing panel.
Install the Aileron Servos & Pushrods
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1. Install a 12" [305mm] servo extension onto the
aileron servo lead. Secure the extension to the lead with
tape, a piece of shrink tube or some other method to keep
them from coming unplugged.
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2. Cut the covering away from the aileron and flap
servo openings in the bottom of the wing.
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3. Taped inside the aileron servo opening is a string.
Taped inside the flap opening is the other end of the string.
Tie the aileron servo extension to the string in the aileron
servo opening. Tie the flap servo lead to the string in the flap
opening. Pull the two servo leads through the wing with the
string that is taped to the root rib. Untie the string from the
leads and tape the leads to the wing root to prevent them
from falling back into the wing.
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4. Install the aileron servo into the aileron servo
opening. Drill through the servo mounting holes with a 1/16"
[1.6mm] drill bit. Remove the servo from the servo opening.
Install and then remove a servo mounting screw into each of
the holes you have drilled. Apply a drop of thin CA into the
holes to harden the threads. Once the glue has hardened
install the servo into the servo opening using the hardware
included with your servo. Center the servo, then install a
servo arm as shown. The arm should be pointing towards
the wing tip.
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5. Install the flap servo into the flap servo opening,
mounting it using the same procedure for the aileron servo.
Install the servo arm onto the flap servo with the arm
pointing towards the root rib. Important! When instructed to
do the left wing, the arm on the flap servo must point
towards the left wing tip, not the root rib as was done on the
right wing panel.
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6. Place a nylon control horn in line with the last hole
in the servo arm. When positioned properly the control horn
will rest on a hardwood plate in the aileron. Mark the
location of the mounting holes onto the aileron. Drill a 1/16"
[1.6mm] hole on the marks, drilling through the plywood
plate but not through the top of the aileron. Insert and
remove a #2 x3/8" [10mm] screw into each of the holes.
Apply a couple drops of thin CA into the holes to harden the
threads. Once the glue has hardened attach the control
horn to the aileron with two #2 x 3/8" [10mm] screws.
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7. Screw a 4-40 nut onto a 4-40 x 5-3/4" [146mm]
threaded rod approximately twenty turns. Slide a silicone
8