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Building the Wing
Center Section:
32.
Cut the lower 3/16" sq. main spar from one of the 36" pieces and pin it to the plan.
33.
Cut a piece of trailing edge to length and pin it into position on the plan.
34.
Position ribs W-1, W-2 and W-3 on the plan. Hold them 90 degrees to the building board and glue them to the lower spar
and the trailing edge.
35.
Cut a piece of 1/4" sq. balsa strip for the leading edge and glue into position on the ribs.
36.
Cut the top 3/16" sq. main spar from the other 36" piece and glue into position.
37.
Cut the two 3/32" sq. leading edge strips (one from each of the 36" pieces provided) to length and glue into position. Add
the 1/16" sheet on top of ribs W-1 from the main spar to the trailing edge.
Outer Wing Panels:
38.
Cut the 3/16" sq. main spar to length and pin it to the plan. Do not glue this piece to the wing center section at this time.
39.
Cut the trailing edge to length and pin it to the plan. Do not glue this piece to the wing center section at this time.
40.
Place ribs W-5, W-6, W-7, W-8, W-9 and W-10 into position on the plan. Hold these ribs 90 degrees to the building board
and glue to the main spar and the trailing edge.
41.
Cut the 1/4" sq. leading edge to length and glue it to the ribs. Do not glue this piece to the wing center section at this time.
42.
Remove the pins from the left panel and remove it from the plan. Now re-position the left wing panel against the wing
center section. Raise the wing tip from the plan by placing a 1 1/4" spacer under rib W-10.
43.
Glue the lower spar, the trailing edge and the leading edge to the wing center section.
44.
Place rib W-4 into position and glue it to the trailing edge, the main spar, the leading edge and to rib W-3.
45.
Cut the top 3/16" sq. spar and the two 3/32" sq. leading edge strips to length and glue into position.
46.
There are 4 thin plywood dihedral braces that are laminated together at each upper and lower joint between the the spars
on the center section and the outer panels. They must be installed one at a time to allow them to bend to the angle formed
by the spars. Working with one piece at a time, glue the 4 dihedral braces to the front of the top joint between the center
section and the outer panel. Add the first piece with thick C/A or 5 minute epoxy and hold it securely into position on the
front of the spars with several clothes pins until the glue is dry. Now add the second, third and fourth piece as you did the
first.
47.
Remove the wing from the plan and add the four dihedral braces to the joint between the two lower main spars.
48.
Trim the spars, leading edges and trailing edges flush with rib W-10.
49.
Drill a 3/32" hole in one of the main landing gear blocks as shown on the plan. Glue the main landing gear block into slots
in ribs W-2 and W-3 with 5 minute epoxy. The 3/32" hole should be on the inboard end.
50.
Pin the wing center section into position on the plan and build the right outer panel as you did the left.
51.
Cut or sand the wing tip blocks to the shape shown on the plan as seen from the top.
52.
Glue the wing tips to the wing and sand them to the airfoil shape of the wing ribs. Finally sand them to the rounded section
shown on the plan.