Hangar 9 RV-8 Assembly Manual page 34

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Step 9
Use a drill and 1/16-inch (1.5mm) drill bit to drill the four holes
on the blocks for the servo mounting screws. Place 2 to 3 drops
of thin CA in each hole to harden the surrounding wood.
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Step 10
Use a #1 Phillips screwdriver and the screws provided with
the servo to secure the servo to the mounting blocks.
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Step 11
Secure a 6-inch (152mm) servo extension to the aileron
servo lead. Use string or a commercially available connector
to keep the connection from unplugging accidentally inside
the wing.
note: The flap servos will not require the installation of
the servo extension. Skip Step 11 when preparing the
flap servos.
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Step 12
Remove the tape that secures the string inside the opening
for the aileron servo. Tie the string around the end of the
extension. Remove the cover for the flap servo. Note the
location of the servo horn exit on the cover and how it aligns
with the control horn.
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Step 13
Use the string to pull the aileron servo extension into the
opening for the flap servo.
Hangar 9 RV-8 Assembly Manual