14. Cut a piece of 3/8 x 1 balsa stock to fit between W1
and W2 for the leading edge. Glue in place. Sand
the leading edge flush with W2.
15. Cut another piece of 3/8 x 1 balsa to fit between the
leading edge at W2 and W4. Sand to fit and glue in
place.
16. Fit the remaining 3/8 x 1 balsa to the leading edge
and glue in place. See Figure 17.
17. Glue the top ¼ x ¼ balsa spar in place.
18. Cut shear webs to fit from W6 to W14 from scrap
3/32” balsa. Sand as needed for a tight fit between
the ribs. Glue between the top and bottm 1/4”
spars as indicated on the plans. The grain in the
shear webs should run vertical.
19. Sand the aileron spar flush with the ribs. Lightly
sand the spar to remove any high spots.
20. Cut two 1/16 x 4 x 36 and two 1/16 x 3 x 36 balsa
sheets to 29”. Edge glue these sheets. Trim the
sheet to match the leading edge.
21. Sheet the top of the wing. Start at the leading edge
and glue except at W1, W2 and W3 - leave this free
until you’ve glued to the spar, then glue.
22. Trim the trailing edge to 0.7 aft of W16 and W17.
Trim and sand the sheeting at W14, W1, and the
aileron.
23. Epoxy the Maple Gear Block to ribs W3, W4, W5,
and W6.
24. Epoxy the Maple Gear Block Anchor to the Gear
Block and W3A. Align so that the Gear Block
Anchor is flush with W3A and perpendicular to the
Gear Block.
25. Add balsa tri-stock to the sides of the Gear Block
Anchor for added support.
26. Carefully drill the Gear Block using a 3/16” bit to
open up the hole for the gear wire. Use caution to
prevent drilling through the top sheeting!
27. Remove the tabs from the bottom of the ribs.
Remove the tab on the bottom aft of W1 and W2
and glue W20 Ply Holddown Plate in place. Trial fit
W18 Servo Tray in place in the slots in W1 and W2,
centering the hole with W1.
Do not glue at this
time.
28. Sand the aileron spar flush with the ribs. Bevel the
trailing edge sheeting to match the rib contours.
Sand off the tabs on the ply spar, and lightly sand
any high spots on the bottom of the wing.
29. Bend and install the pushrod onto the bellcrank.
Make alignment marks on the aileron spar and the
leading edge for the opening in the bottom sheet-
ing.
6
