Top Flite TOPA0150 User Manual
Page 30
Frame the wing panel
Refer to this photo for the following two steps.
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1.
Without using any glue until instructed to
do so, join ribs W-2 through W-9 to the die-cut 1/8"
balsa
spar web. Join the 1/4" x 3/8" x 30" basswood
top and bottom main spars, followed by the die-cut
1/8" balsa
outer TE spar and the die-cut 1/8" balsa
aileron spar.
❏ ❏
2. Join ribs W-10 and W-1 to the assembly. Make
certain the ends of the top and bottom spars extend
beyond W-1, so they can be trimmed flush later.
❏ ❏
3. Place the assembly over the plan. Making
certain the parts are accurately aligned over the plan,
insert T-pins through the spar web to hold the bottom
spar and the spar web flat on the building board. Insert
T-pins through the TE spar (or use leftover rib jigs) to
hold the TE spar to the building board.
❏ ❏
4. Join the die-cut 1/8" balsa
inner TE spar to
the assembly and hold it down with jig sticks pinned
to the building board.
Now it’s time to glue!
❏ ❏
5. Be sure that all the parts align with their
location on the plan, that the ribs are fully seated into
the notches of the outer TE spar and that the TE spar
is fully contacting the plan. Glue the spar web to the
top and bottom spars and to all ribs
except W-1.
Glue the ribs to the outer TE spar and to the aileron
spar. Use a small builder’s square to make certain tip
rib W-10 is perpendicular to the building board (this
will align the wing tip blocks with the wing when it’s
time to glue them on).
Refer to this photo for the following two steps.
❏ ❏
6. Insert strips of leftover 1/8" x 1/4" balsa
between the top and bottom main spars and rib W-1.
These will help support W-1 when a portion of it is
removed to accommodate the spar joiners.
❏ ❏
7. Use the die-cut 1/8" plywood
dihedral gauge
to hold W-1 at the correct angle, then glue it into
position. Don’t glue W-1 to the spar web. Just glue it
to the leftovers you glued in, in the above step and to
the inner TE spar.
Refer to this photo for the following three steps.
❏ ❏
8. Cut the shaped 30" balsa
leading edge to
the correct length to fit the wing from W-3 to W-10 as
shown on the plan. Glue the LE, centered height-
wise, to the fronts of the ribs.
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