Great Planes Corsair 40 Kit - GPMA0177 - Manual (Page 15)

D D 6. Glue the LE, centered vertically, on ribs T-2 and T7.
Glue the remaining sub TE flush to the top and bottom of
ribs T-2 and T-7.
D D 7. Glue ribs T-3 through T-6 to the LE and sub TE so that
they are perpendicular to the building board and their jig tabs
are against the building board. Start with the outside ribs and
work toward the center. Make sure each rib is pressed
against the lower spar and aligned with the plans.
D D 8. Glue the ribs to the lower spar. Next, install and glue
the upper 3/8" x 3/8" x 24" balsa spar in position. Be sure
to keep the ribs perpendicular to the building board as you
perform this step.
D D 9. Align rib T-1 (W06) over the plans. Hold the dihedral
gauge against T-1 with the line meeting the gauge on the
reference line on the plans. The angle of the rib should
match the angle of the gauge. When satisfied with the fit,
use medium CA to glue the rib to the LE, sub TE and spars.
D D 10. Install 1/16" x 3" x 1-5/8" balsa shear webs (W11)
on the aft side of the spars from T-1 to the wing tip. Install
one extra shear web on the forward side of the spars
between ribs T-1 and T-2. Use medium CA and be sure to
get a secure bond. It's not necessary for the shear webs to
be glued to the ribs.
Sheet The Bottom Leading And Trailing Edge
D l-t 1. Sight down the sub TE to check for straightness -
shim the ribs as necessary. Lightly sand the sub TE to
remove any bumps. Use medium CA to glue a remaining
3/32" x 7/8" x 20" balsa TE sheet to the sub TE. Refer to the
cross-section on the plans. Hold a straightedge across the
sheeting while the CA cures to keep the TE flat and straight.
D D 2. Cut a 20" long piece of sheeting from each of the
four remaining 3/32" x 4" x 25-1/2" balsa LE sheets. Bevel
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