Top Flite TOPA0110 - Manual (Page 16)

21. If you are going to use flaps, trim the
1/4" x 3/8" balsa stock left over from the wing
Spars to the length shown on the plans for the
flap servo bay rails. Glue the rails into the
notches in W-2 and W-3 with CA. If you do not
plan to use flaps, you may fill the notches with
scrap wood or put the rails in anyway.
22. Glue the aileron bellcrank assembly
into the slots in ribs W-8 and W-9. The bellcrank
should face upwards as shown in the photo.
23. Fit, then glue, in the die-cut 3/32" balsa
Flap Tip Rib at the location shown on the plans.
24. If you plan to use flaps, fit and glue in
the two die-cut 3/32" balsa Flap Root Ribs. Use
a scrap piece of 1/16" balsa to space the root ribs
apart. If you are not using flaps, these parts may
be glued in anyway, or discarded.
25. Custom fit 1/16" balsa Shear Webs to
fit behind the spar between ribs W-3 to W-12.
Glue them to the spars with medium CA. Wick
thin CA into all the joints of the shear webs and
the spars to make sure they are well bonded. It is
not important to glue the shear webs to the ribs.
26. Fit and glue a shear web to the front
of the spars between ribs W-3 and W-4 for extra
strength.
27. Sight down the wing trailing edge to
make sure it is still straight. Shim any low jig tabs
if required. Trim each of the 1/16" x 3" x 3/4"
balsa Aft Shear Webs to fit between ribs W-2
through W-8 in front of the TE Spar. Glue them in
place with the structure held firmly on your flat
work surface.
28. Cut a 16-1/2" long piece of Outer
Pushrod Tube. Roughen the outside of the tube
with 220-grit sandpaper. Feed the tube through
the holes in the ribs as shown on the plans. Use
CA to glue the tube to the ribs.
29. Cut five lengths of Inner Pushrod
Tube about 5/16" long. Slide them onto an .074"
x 3 4 " T h r e a d e d E n d P u s h r o d W i r e a t t h e
intervals shown on the plans. Carefully apply a
small drop of CA to the short tubes if they are not
very snug on the wire.
30. Enlarge the pushrod hole in W-8 to
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