Great Planes ESP6 Easy Sport 60 - GPMA0152 - Manual (Page 11)

power or hand 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.
INSTALLING CA HINGES
The hinge material supplied in this kit consists of a 3-layer
lamination of mylar and polyester It is specially made for
the purpose of hinging model airplane control surfaces
Properly installed, this type of hinge provides the best
combination of strength, durability and ease of installation
We trust even our best show models to these hinges, but
it is essential to install them correctly Please read the
following instructions and follow them carefully to obtain
the best results These instructions may be used to
effectively install any of the various brands of CA hinges.
The most common mistake made by modelers when
installing this type of hinge is not applying a sufficient
amount of glue to fully secure the hinge over its entire
surface area, or, the hinge slots are very tight, restricting
the flow of CA to the back of the hinges This results in
hinges that are only "tack glued" approximately 1/8" to 1/4"
into the hinge slots. The following technique has been
developed to help ensure thorough and secure gluing.
Note: When hinging the rudder and elevator which use
torque rods, use a toothpick to force epoxy down the hole
drilled for the torque rod In the case of the rudder, be
sure not to let glue get into the bearing tube.
C Insert the hinges and install the control surface Verify
the left-right positioning of the control surface and close
up the hinge gap to 1/32" or less 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 surface 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 installing the control surface Remove the
pins before proceeding
A. Cut the hinge slot using a #11 blade in a standard #1
knife handle The CA hinges provided have a thickness
that fits this type of slot very well Trial fit the hinge into the
slot If the hinge does not slide in easily, work the knife
blade back and forth in the slot a few times to provide
more clearance (it is really the back edge of the blade
that does the work here in widening the slot)
B. 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
ASSEMBLE THEN APPLY 6 DROPS
OF THIN CA TO CENTER
OF HINGE, ON BOTH SIDES
D 4 Apply 6 drops of thin CA adhesive to both sides of
each hinge on the elevators and rudder only - not the
ailerons yet. Allow a few seconds between drops for ihe
CA to wick into the slot Note that the small "tunnels you
created by drilling the 3/32" holes allow the CA to freely
travel in to the entire surface of the hinge, producing an
extremely secure bond
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