Great Planes MiGLET Ducted Fan ARF - GPMA1866 - Manual (Page 9)

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2. Drill a 3/8" [9.5 mm] hole in the forward inside corner of
each servo bay for the servo leads to pass through. The holes
should be approximately 1-1/2" [38 mm] deep and at an angle
of about 20° in relation to the underside of the wing. Finish the
holes for the servo leads by cutting downward at the marks you
made from the top side of the duct channel top. Make sure these
holes are close to the center of the duct channel top as shown
but not entering the duct channel.
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3. Cut off three arms from the four-arm servo horns
included with the servo and enlarge the outer hole with a
3/64" [1.2 mm] drill bit. Center the elevon servos with your
radio system and install the arms at a right angle to the
servo case as shown. Cut the mounting tabs from the servos
and feed the servo leads through the holes you made.
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4. Glue the elevon servos into the servo bays.
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5. Use a straightedge in line with the servo horns to mark
the locations for the elevon control horns.
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