WATT AGE P-47 Thunderbolt EP ARF Assembly Instruction Manual - page 17
17
PRO TIP
❑ Install the rubber grommets and brass collets onto one aileron servo, making sure to install the collets with the flanges toward the
bottom of the servo, then plug a 12" servo extension lead to the servo lead.
STEP 1: INSTALLING THE AILERON SERVOS
❑ Pull the servo lead through the wing and out the hole in the top of the
wing, using the piece of string that's installed in the wing.
❑ Set the servo into place, making sure that the servo output shaft is
toward the leading edge of the wing.
❑ Install the servo, making sure to drill 1/16" diameter pilot holes for
the mounting screws.
❑ Repeat the previous procedures to install the second aileron servo into the wing.
STEP 2: INSTALLING THE PUSHRODS, CONTROL HORNS AND CLEVISES
❑ Enlarge the hole in a servo arm that is 1/2" out from the center of the
servo arm, using a 5/64" diameter drill bit.
❑ Install the Z-Bend in one threaded pushrod wire into the hole that
you enlarged.
❑ Connect your radio system and plug one aileron servo into the receiver. Center the servo by double-checking that the aileron
trim lever on your transmitter is centered, then use a couple of pieces of masking tape, taped between the aileron and the wing, to
hold the aileron centered.
❑ Install the servo horn onto the servo, making sure that the servo
horn is centered and points toward the wing tip.
❑ Install the servo horn retaining screw to secure the servo horn to
the servo.
❑ Position one nylon control horn onto the bottom of the aileron, then
mark the locations of the mounting holes. When aligned properly, the
centerline of the control horn should be approximately 1-1/2" out from
the inside edge of the aileron (at the hinge line) and the clevis attachment
holes should be lined up over the hinge line. The base of the control
horn should be angled slightly, too, so that the control horn will line up
with the pushrod wire.
❑ Drill 5/64" diameter pilot holes through the aileron for the control
horn mounting screws.
Before installing the control horn in the next procedure,
drip several drops of thin C/A into the pilot holes and allow the C/A to
fully cure. The C/A will harden the surrounding balsa, making the
mounting area stronger.
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