Great Planes Corsair 40 Kit - GPMA0177 - Manual (Page 11)

D 6. Use 30-minute epoxy to glue the rails in position. Glue
(and clamp for a secure bond) the 7/16" x 5/8" x 3/4"
grooved hardwood landing gear blocks (HRDWD022) to
the inside of the landing gear rails and also to the ply
doubler on R-3 with 30-minute epoxy. It is essential that the
landing gear blocks be accurately aligned with the landing
gear rail.
D 4. Lightly sand the sub TE to remove any bumps. Cut two
4-1/2" long pieces from a new 3/32" x 4" x 30" balsa LE
sheet to fit between ribs R-2. Refer to the cross-section on
the plans. Edge glue the two pieces together to make a
center skin. Trim the center skin so that it overlaps the
1/4" x 1/2" x 4-1/4" balsa hatch block by 1/4". Glue the
sheet to the ribs and sub TE with medium CA.
D 7. After the epoxy has fully cured, drill a 5/32" hole
through the landing gear rail working from the top of the
landing gear block, as shown. By drilling in this manner, the
block acts as a guide for drill bit.
D 8. Carve a slight radius in the groove of the landing gear
rails at the location of the hole. This radius will permit the
landing gear wire to fully seat in the groove.
D 5. Remove the center section from the building board
and test fit the 7/16" x 5/8" x 4" grooved basswood landing
gear rails (HRDWD013) into the notches in ribs R-3, R-4
and R-5. If necessary, carefully sand the notches to allow a
snug fit. The landing gear rails should protrude above the
ribs by 3/32".
D 9. Pin the wing center section back on the building board.
Cut four 6-1/2" long pieces from a new 3/32" x 4" x 30"
balsa LE sheet. Test fit one LE sheet between ribs R-2 and
R-5. Trim the aft edge of the sheet to the center of the
center spar. When satisfied with the fit, press the forward
edge of 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. Apply a bead of thick CA on the top of
ribs R-3, R-4 and R-5 and roll the sheet into contact with
the ribs and the center spar. Wick thin CA between the
sheet and the center spar.
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