Great Planes F4 Phantom - GPMA0440 - Manual (Page 42)

4. If you have not yet installed and connected the
elevators, rudder, throttle, steering and aileron pushrods,
return to "Radio Installation" on page 38 for instructions.
Drill a 3/32" hole, 1/2" deep, in the center of the hinge
slot. If you use a Dremel" MultiPro'" for this task, it will
result in a cleaner hole than if you use a slower speed
drill. Drilling the hole will twist some of the wood fibers
into the slot, making it difficult to insert the hinge, so you
should reinsert the knife blade, working it back and forth
a few times to clean out the slot.
TEMPORARY PIN
TO KEEP HINGE
CENTERED
It is best to leave a very slight hinge gap, rather than
closing it up tight, to help prevent the CA from wicking
along the hinge line. Make sure the control surfaces will
deflect to the recommended throws without binding. If you
have cut your hinge slots too deep, the hinges may slide
in too far, leaving only a small portion of the hinge in the
control surface. To avoid this, you may insert a small pin
through the center of each hinge before installing. This pin
will keep the hinge centered while you install the control
surfaces. Remove the pins before proceeding.
Perform steps 1 through 6 if using mechanical retracts.
Skip to the next section, Attaching The Wing Tips, if
using fixed landing gear.
1. Reassemble the main retracts and retract pushrods
that were removed from the wing during wing completion.
Install the main gear retract servo.
ASSEMBLE, THEN APPLY 6 DROPS
OF THIN CA TO CENTER
OF HINGE, ON BOTH SIDES
2. Install the elevators on the stab and apply 6 drops of
thin CA adhesive to both sides of each hinge. Allow a few
seconds between drops for the CA to wick into the slot.
Repeat the process to install the rudder.
2. A large, round servo horn with holes drilled 1/2"
(12.7mm) from the center will work for most mechanical
retracts. Install Screw-Lock Pushrod Connectors (not
included, GPMQ3870) onto the horn as shown and install
the servo horn on the servo.
3. Pack each of the torque rod holes in the ailerons with
30-minute epoxy (a toothpick works well for this). Install the
ailerons with their hinges. Repeat the gluing technique
described previously and allow the epoxy to cure. 3. With the retract pushrods attached to the retracts,
insert the pushrods through the clearance holes toward the
servo. Mount the retracts to the retract blocks.
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