Hook Up The Ailerons - GREAT PLANES Piper J-3 Cub Instruction Manual

❏ 5. Cut a paper towel into approximately 2" [50mm]
squares. Add six drops of thin CA to the center of the hinges
on both sides. Use the paper towel squares to absorb
excess CA from the hinge gap before it cures. Do not use
CA accelerator; allow the CA to cure slowly.
❏ 6. Pack the tail gear wire hole and the groove in the LE of
the Rudder with epoxy. If you work quickly, you may use 5-
minute epoxy, but we recommend 30-minute epoxy. Join the
rudder to the fin using two hinges. Use a tissue dampened
with alcohol to wipe away excess epoxy before it cures.
Make sure there is approximately a 1/32" [.8mm] gap
between the rudder and the fin. Place the fuselage on its
side so the fin and rudder are horizontal. Add six drops of
thin CA to the center of the hinges on both sides. Use the
paper towel squares to absorb excess CA from the hinge
gap before it cures. Do not use CA accelerator; allow the CA
to cure slowly.
❏ ❏ 7. Use the same hinging method to join the ailerons to
the wing.
❏ 8. After all control surfaces are securely hinged and the
CA has thoroughly cured, move the control surfaces back
and forth to loosen them up a little so it will be easier for
your servos to move them.

Hook Up the Ailerons

❏ ❏ 1. If you haven't already done so, install the rubber
grommets and eyelets in your aileron servos. Attach a servo
extension to the aileron servo. Use heat-shrink tubing or
electrical tape to secure the servo cord to the extension so
they don't unplug in flight. Pull the string part-way out of one
of the aileron servo compartments in the wing. Tie the string
to the servo cord on one of the aileron servos.
❏ ❏ 2. Fit one of the aileron servos in the wing. Hold the servo
to the wing so the sides don't contact the wing and drill 1/16"
[1.6mm] holes for the servo mounting screws. Mount the servo
to the wing with the screws included with your servos.
❏ ❏ 3. Mount your other aileron servo in the opposite wing
panel using the same procedures as above.
❏ ❏ 4. Cut the unused arms from one of the servo horns
and mount it on one of the aileron servos in the wing. When
installing the arms onto the servos, position the arms as
shown in the sketch so the ailerons will move opposite each
other when using a "Y" harness.
❏ ❏ 5. Refer to the following photo. Use alcohol or other
solvent to clean the film of oil from the two 2-56 x 6" Wire
Pushrods. Screw a Nylon Clevis about fourteen turns onto
one of the pushrods. Connect the clevis to the outer hole of
a nylon control horn.
❏ ❏ 6. Hold the control horn on the aileron, making sure the
holes align with the hinge line. Use the control horn as a
template to drill 1/16" [1.6mm] holes through the aileron for
the mounting screws.
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