Great Planes Matt Chapman Eagle 580 46/EP ARF - GPMA1281 - Manual (Page 10)

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3. Slide the carbon fi ber horizontal stabilizer tubes
into the fuselage with the shorter tube in the forward
position. Fit the stab halves onto the tubes and slide them
against the fuselage. Secure the stabs in place using two
4-40 x 1/2" [13mm] SHCS, two #4 fl
at washers and
threadlocking compound.
Install the Tail Servos and Pushrods
A servo bay is provided in the tail of the plane for an aft
mounted rudder servo. An aft mounted rudder servo will
reduce or eliminate any tail weight needed to balance the
airplane with a heavier engine installed. An additional 16"
[406mm] servo extension is needed for an aft mounted
rudder servo. See the “Expert Tip” in this section detailing
the aft rudder servo installation.
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1. Trim the covering from the elevator and rudder pushrod
exit slots in the fuselage. Temporarily insert a 2-56 x 36"
[914mm] pushrod into each elevator pushrod exit slot. Use
the position of the pushrod to align the elevator control horns
onto the undersides of the elevator halves. Mark the locations
of the control horn mounting holes onto the elevator halves
and drill 1/16" [1.6mm] holes at the marks. Do not drill all the
way through the elevator halves! Thread a #2 x 3/8" [9.5mm]
self-tapping screw into each hole and back it out. Apply a
couple drops of thin CA glue to each hole and let it harden.
Attach the elevator control horns to the elevators using four
#2 x 3/8" [9.5mm] self-tapping screws.
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2. Attach a control horn onto the left side of the rudder in
the same fashion.