SIG KADET LT-40, Instruction Manual, Page: 15 / 49

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42. On the LEFT (BOTTOM) Center Section Trailing Edge piece, draw a box 1/4" wide x1/2" deep, exactly 7/16" from the end.
43.
Continue the lines down the front of the piece, until you reach the bottom of the pre-cut groove in the front.
44.
Using a razor saw, carefully cut along the side lines of the box, stopping when the blade is deep enough to reach across to
both end lines.
45.
Use a modeling knife to "chip" the wood out between the saw cuts until you have a notch the full depth of the box you drew
originally.
46.
Repeat steps 42 through 45 to make the RIGHT (BOTTOM) Center Section Trailing Edge a mirror image of the Left one.
47.
Familiarize yourself with the pre-bent Aileron Torque Rods w/Brass Bearings. Note that there is a Left and a Right Torque
Rod. Study their positions on the full-size plans to help you identify which one is Left and which is Right. Notice that when
the Torque Rods are in position in the wing, the threaded end of the torque rod will come out the bottom of the wing and the
shorter unthreaded end will face back into the aileron.
NOTE: The threaded portion of the Torque Rods should lean back slightly towards the rear of the airplane when the
ailerons are in neutral position. That rearward lean provides the KADET LT-40 with a small amount of "differential"
movement in the ailerons (more up than down), which makes for smoother turning.
48.
Use a small amount of Slow CA to glue the Brass Bearing portion of the Left
Aileron Torque Rod into the groove in the front of the Left Center Section Trailing
Edge piece. GLUE ONLY THE BRASS BEARING, NOT THE WIRE PORTION OF
THE TORQUE ROD! The wire portion of the Torque Rod must be completely free
to rotate inside the Brass Bearing.
TIP: It’s not necessary to apply glue along the full length of the Brass Bearing.
Keep all glue 1/8" away from the ends of the Brass Bearing to minimize any
chance of glue seeping inside the bearing and causing a bind in the
movement of the Torque Rod.
49.
Repeat step 48 to glue the Right Aileron Torque Rod into the groove in the front of the Right Center Section Trailing Edge.
50.
Apply a bead of Slow CA to the leading edges of the Left Center Section Trailing Edge piece. Keep the glue on the balsa -
do not get any glue on the Torque Rod or the Brass Bearing! Hold the Center Section Trailing Edge assembly in position on
the trailing edge of the wing until the glue dries. Use a straight edge to confirm that the bottom surface of the part is flush
with the bottom surface of the wing. Let dry.