Top Flite TOPA0405 - Manual (Page 16)

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16. Sight down the wing TE to make sure it
is still straight. Shim any low jig tabs if required.
From the 3/32" x 3" x 30" balsa sheets, make aft
shear webs to fit on the front of the TE spars from
rib W-2 to W-8. The shear webs must be glued
securely to the TE spars.
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17. From the 1/4" x 1/2" x 32" basswood,
make hatch blocks to fit in the notches from ribs
W-2 to W-3 and W-8 to W- 9. Use 6-minute epoxy
to glue the hatch blocks to the ribs.
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18. Use the die-cut 1/8" plywood 93Þ tool (93)
as shown to mark the ends of the spars and TE’s.
NOTE: When marking the spars, the corner of the
tool is on the wing centerline. When marking the
TE spars and flap LE’s, the corner of the tool is
positioned where the TE spars end on the plan.
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19. Glue together two of the die-cut 1/8"
plywood flap horn bases (FH). Glue the flap horn
base in place between ribs W-2 and W-3. The
base should be flush with the upward facing edge
of the ribs and flap LE.
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20. Glue the die-cut 1/8" balsa flap root rib
(FL1) flush to the flap LE and flap horn base.
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21. Cut a spacer from the leftover 3/32" and
1/16" die sheets. Place the spacers between the
flap root rib (FL1) and the die-cut 1/8" balsa flap
root rib (FL2). Glue the flap root rib (FL2) to the
flap LE making sure that the upward facing edge of
FL2 is flush with the upward facing edges of FL1
and rib W-2. Glue a piece of leftover balsa
between rib W-2 and FL2. This will keep FL2
properly spaced from rib W-2.
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