Great Planes Corsair 40 Kit - GPMA0177 - Manual (Page 16)

the front edge of the 3/32" x 4" x 20" balsa sheet. Press a
balsa sheet tightly against the lip of the LE. Roll the sheet
down against the spar. Trim the sheet 1/8" forward of the
spar's aft edge. This will provide a lip on the spar to glue the
cap strips to later. When satisfied with the fit, press the
sheet tightly against the LE and the ribs, then wick thin CA
along the forward seam. Wipe off any excess CA before it
cures. Roll the sheet into contact with the spar. Working
from the center toward the tip, wick thin CA between the
sheet and the spar.
D D 3. Lift the wing off the building board. Then, while
holding it flat on your work surface, wick thin CA between
the ribs and the sheet from the inside of the wing. Add a
fillet of medium or thick CA along the inside of the LE.
each rib. Press the sheet into contact with the ribs and hold
it there until the CA cures. Wick thin CA along the joint
between the spar and the sheet.
D D 4. Remove the remaining jig tabs and sand the rib
edges smooth.
D D 5. From the 3/32" x 1/4" x 24" balsa cap strip, cut and
install cap strips on the top and bottom of ribs T-3 through
T-7 cap only the top of T-2 between the LE and TE
sheeting. The cap strip on rib T-7 is flush with the side of
the rib. Glue a 3/32" x 1/2" balsa cap strip onto the top of
rib T-1 flush with the side of the rib.
Sheet The Top Leading And Trailing Edge
D D 6. Sand the sheeting, spar, sub TE and LE flush with
ribs T-1 and T-7.
D D 1. Pin the wing to the building board with the sheeted
side facing down and the jig tabs against the building
board. Trim and sand the jig tabs from the top of the ribs
(the unsheeted side). Sight down the sub TE to make sure
it's straight. Shim any low ribs.
D D 2. Glue a remaining 3/32" x 7/8" x 20" balsa TE sheet to
the TE and ribs as you did with the bottom of the wing panel.
D D 3. Bevel the forward edge of a 3/32" x 4" x 20" balsa
LE sheet. Press the balsa LE sheet tightly against the lip of
the LE. Roll the sheet down against the spar. Trim the sheet
1/8" forward of the spar's aft edge. This will provide a lip on
the spar to glue the cap strips to later. When satisfied with
the fit, press the sheet tightly against the LE and the ribs,
then wick thin CA along the forward seam. Wipe off any
excess CA before it cures. Gently lift the aft edge of the
sheet and quickly apply a bead of medium CA to the top of
D LI 7. Center and glue the 1-1/2" shaped balsa wing tip
(W09) centered on rib T-7. The forward edge must be
centered on the LE.
D D 8 Using a razor plane or hobby knife, rough out the
wing tip as shown on the plan. Use progressively finer
grades of sandpaper to finish off the shape.
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