.
6.
Epoxy together two die-cut 5/32"
plywood IW-1 inner webs and use a
weight to hold them flat while drying.
7.
Glue the 3/16"x1"x4" plywood landing
gear block doublers to the tops of the
front landing gear blocks.
Wing Construction
The wing is built in two halves, each consisting of an outer panel and half of the center section. After construction, the outer
panels are cut free and the center section halves are joined to complete the three
8.
a. Pin down one of the laminated spruce main spars over the plans.
b. Glue and pin all of the 1/8" lite-ply wing ribs into position except for the W-1/W-1A subassembly at the wing center.
Be sure to use the wing rib subassemblies that you prepared earlier in steps 3 and 4.
NOTE: The large lite-ply ribs may have a tendency to warp, making it difficult to align them on the plans at this time. To
counteract this, be sure to pin each rib accurately at the rib alignment tabs. Then, as each spar or leading edge piece is
added, gently pull each rib into position while gluing. By the time you have added the front spars, the rear spars, and the
leading edges, the ribs should all be perfectly straight.
9.
Glue another laminated spruce main spar assembly to the tops of the ribs. Use a builder's triangle to make certain each rib
10.
Locate the die-cut 1/16" plywood dihedral gauge. Position the W-1/W-1A wing rib subassembly in its position on the plans
using the dihedral gauge to insure that it is at the proper dihedral angle. Glue the rib assembly to the spars.
BUILDER'S TIP:
Glue scrap pieces
of 1/4" sq. balsa to
the sides of the rib
alignment tabs to
accept pins. It's a lot easier to pin
through balsa than lite-ply!
11.
a. Cut a 1/4" sq. x12" balsa forward spar from one of the 36" lengths provided. Glue this spar to the top of the center
section ribs. The outboard end of this spar should be positioned about halfway between the two W-
joint.
b. Glue a 1/4" sq. x 36" balsa forward spar into position on top of the outer panel wing ribs with its inboard end butted
against, but not glued, to the center section forward spar.
12.
a. Cut a 1/8"x3/4"x12" balsa leading edge for the center section and glue it in place at the front of the ribs, again
placing the outboard end between the two W-2 ribs at the wing joint.
Add the 1/8"x3/4"x36" balsa leading edge to the outer panel.
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