Top Flite TOPA0310 - Manual (Page 19)

❏ ❏ 2. Position the assembly over the wing plan
covered with Great Planes Plan Protector. Use 1/4" x
1/4" balsa jig sticks leftover from building the stab and
fin to securely hold the bottom outer main spar and the
outer TE spar over their positions on the plan.
❏ ❏ 3. Still without using any glue, add the inner TE
spar and ribs 2, 3 and 4 to the assembly. Tack glue
the die-cut 1/8" balsa
spar wedge to the bottom
inner main spar and slip the assembly into position
under ribs 2 thru 5. Use additional leftover 1/4" x 1/4"
balsa rib jigs to hold the inner TE spar in position.
❏ ❏ 4. Slide the joiner box bottom through ribs 2 thru
7, then fit the joiner box top the same way.
❏ ❏ 5. Glue the die-cut 1/8" plywood root rib W1D to
W1. From now on these ribs will be referred to as W1.
Add W1 to the wing panel making certain the end of
the joiner box rails key into W1. Align the die-cut 1/8"
plywood
dihedral gauge with the line indicated on the
plan. Position the joiner box top and bottom so that W1
is fully contacting the dihedral gauge.
❏ ❏
6. Cut the top inner main spar to the
dimensions shown in the sketch from the remainder
of the basswood stick you used for the bottom inner
main spar (or use an additional 1/4" x 3/8" x 36"
basswood stick if this is your second (right) wing
panel). Still without using any glue, join the top inner
spar to the wing (you can take a peek at how the spar
fits the assembly in the following photo).
❏ ❏
7. Cut a 6-5/8" piece from the cardboard wing
joiner tube . True the ends of the 6-5/8" tube with a bar
sander. Apply a small amount of thin CA to one end
of the tube, allow to cure, then sand smooth. Trim the
1-1/8" diameter 3/32"
plug you saved from rib 10, to fit
in the other end of the tube. Glue it in place.
❏ ❏ 8. Use a metal file or sandpaper to remove any
burrs you find on both ends of the aluminum wing
joiner tube. Test fit the aluminum joiner tube into the
cardboard tube you just prepared to make sure it fits.
If necessary, remove glue bumps from the end of the
cardboard tube so the aluminum joiner slides
through without resistance.
❏ ❏ 9. Test fit the cardboard wing joiner tube
through ribs 1, 2 and 3.
Time to get out the CA. Make sure it’s fresh and you
have plenty of spare tips because it’s finally time to
start gluing! As you proceed, be certain the bottom
outer main spar and the jig tabs of the TE spars are
fully contacting your building board and be certain all
the ribs are fully seated into the notches of the spar
web and TE spars.
❏ ❏ 10. Glue the spar web to the bottom spar, then
to ribs 4 through 15. Glue all ribs except rib 1 to the
TE spars and glue the outer TE spar to the inner TE
spar. Glue the outer and inner top main spars to each
other with epoxy and to all the ribs and the spar web
with CA.
Do not glue the inner top spar to the joiner
box top until instructed to do so.
❏ ❏ 11. Glue rib W16 in place.
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