Model Tech Magic Formula 3D ARF Manual page 35

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.
Install the servo horn retaining screw to secure the servo horn to the servo.
Repeat the previous procedure to install the servo horn and pushrod wire onto the aileron servo in the other half of the wing.
STEP 2: INSTALLING THE CONTROL HORNS AND CLEVISES
When satisfied with the alignment, mark the locations of the two mounting holes, then drill 5/64" diameter pilot holes through the
aileron for the control horn mounting screws.
PRO TIP
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.
Install the control horn and backplate, using two M2 x 16mm machine screws, being careful not to overtighten them.
After installing the control horn, carefully cut off the top of the machine screws flush with the control horn backplate, using a pair
of wire cutters.
Use a piece of masking tape, taped between the aileron and the wing, to hold the aileron centered.
Install the 90º bend in one 3-1/8" long pushrod wire into the hole that
you enlarged, using the nylon snap keeper provided. When installing
the snap keeper, make sure it "snaps" firmly into place over the
pushrod wire.
The pushrod wire should be orientated on top of the servo arm,
as shown.
Install the servo horn onto the servo, making sure that the servo
horn is centered and pointing toward the wing tip.
Position one nylon control horn onto the bottom of one aileron. When
aligned properly, the centerline of the control horn should be 12-1/4" 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 front of
the control horn should be angled slightly to line up better with the
pushrod wire, too.
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