.
REINFORCE WING CENTER JOINT
67.
A 1" wide x 24" long piece of fiberglass cloth tape is supplied to reinforce the joint between the Right & Left Wing Panels.
Cut the 24" long tape into one 18" long piece and one 6" long piece.
68.
Lay the 18" long piece of fiberglass tape over the center joint on top of the wing. Using a small amount of Thin CA, tack
glue the end of the tape to the balsa Center Section Trailing Edge, right in front of the 1/16" plywood Trailing Edge
Stiffeners. Make sure the width of the tape is overlapping 1/2" onto the Right Wing Panel and 1/2" onto the Left Wing
Panel.
69.
After the Thin CA dries, pull the other end of the tape completely around the Leading Edge and down onto the bottom
surface of the wing. The tape should lay nice and flat, tight against the top surface of the wing. Again make sure the tape is
centered over the joint - half on the Right Wing Panel and half on the Left Wing Panel. Then tack glue the tape to the
Leading Edge.
70.
Now carefully flow Thin CA glue onto the tape on top of the wing. Use just enough glue to saturate the tape - too much
glue will run outside the tape and get all over the place. If you do get too much glue on the tape, take a clean rag and
quickly wipe off the excess before it dries (don’t rub too hard and disturb the positioning of the tape). By working slowly
and gluing small (3" long) sections of tape at a time, you should be able to glue the entire length of tape in place without
any major wrinkles or bumps.
CAUTION: Do the gluing in a well ventilated area to avoid breathing the fumes from the Thin CA glue!
71.
After you’ve finished gluing the fiberglass tape on the top of the wing, turn the wing over and glue the remainder of the
original 18" long piece to the bottom front of the wing. Cut it off right in front of the plywood ASM part.
72.
Using the same techniques, glue the 6" long piece of fiberglass tape to the
bottom of the wing. It goes from the back of plywood part ASM, all the way off the
end of the wing. When dry, cut it off flush with the end of the wing.
NOTE: Be very careful when gluing the tape in the area of the Torque Rods! If
you get too much Thin CA in that area, the excess could seep into the Torque
Rods, binding them up permanently.
73.
After all the glue is dry, lightly sand the fiberglass cloth with a piece of 220 grit
sandpaper to remove any lumps or high spots. Be careful not to sand through the
fiberglass cloth.
The basic wing construction is now complete! Set the wing aside until "COVERING THE KADET LT-40"
INSTALLING SIG EASY HINGES
WARNING:
SIG EASY HINGES are designed to be used in conjunction with Thin CA glue. Thin CA (any brand) is
the ONLY type of glue that can be used on EASY HINGES - do not use epoxy or any other type of
glue on EASY HINGES!
Each ultra-thin EASY HINGE is actually a 3-part laminate - a tough plastic inner core sandwiched between 2 layers of
absorbent wicking material. They have been chemically treated to slow down the drying time of Thin CA (which is normally
instant), to allow the glue time to soak all the way to the ends of the hinge and into the wood surrounding it. Once the glue
has dried, the hinge cannot be pulled from the structure without tearing wood out with it.
1.
Begin by carefully cutting a very shallow slit at the hinge location using a fresh, sharp #11 blade in your modeling knife.
This first slit should be very shallow so you can better control the direction of the knife. It's main purpose is to establish
your hinge slot in the right place, so concentrate on staying on the hinge line and don't try to cut too deep.
NOTE: Make the slit slightly wider than the actual hinge.
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