Top Flite TOPA0500 - Manual (Page 48)

SHEET THE TOP OF THE WING
❏ 1. Build the wing jigs from die-cut 1/8" balsa. Place
the wing on the wing jigs. You can see the wing jigs in
following photos. Note that the wing jig (J11) is in two
halves and must be glued together.
❏ 2. If you haven’t done so already, make the top
wing skins.
❏ 3. Sheet one outer panel, then sheet the other outer
panel. Use aliphatic resin to glue the sheeting to the ribs
and spar but use thin CA for the LE. Position your
weights and do not disturb the wing until the glue dries.
❏ 4. Trim the largest center section sheet you made
earlier to fit the aft center section. The TE of the sheet
should align with the middle of the center TE spar. Coil
your fuel lines in the wing so you will be able to retrieve
them after you glue the sheeting in place. Cut holes in the
sheeting for your fuel lines and glue the sheet in position.
❏ 5. Sheet the forward center section and the small
space on the outside of the nacelles with the rest of your
3/32" balsa.
❏ 6. Trim the top wing sheeting even with the LE, the
tips and the outer TE spars. Trim the sheeting so it ends
in the middle of the inner and center TE spars to form a
ledge to accommodate the top flap skins.
❏ 7. Perform steps 1 and 2 on page 44 and taper the
trailing edges. Make the center and outer top flap skins
the same way you made the bottom flap skins, but make
the outer top flap skins from 1/16" balsa—not 3/32" balsa.
Also, make the flap skins slightly oversize to allow for
positioning, trimming and alignment with the flaps (or
bottom flap skins if you have not built working flaps). Glue
the top flap skins to the wing so the aft edges align with the
flaps (or flap skins). After you glue the top flap skins in
place, temporarily hold the flaps closed with masking tape.
❏ 8. Cut the sheeting from the top of the center section
for the fuel tank compartment and receiver compartment
leaving the corners round for a finished appearance. Use
caution to avoid cutting the servo cords and fuel lines.
BUILD THE AILERONS
Build left aileron first...
❏ ❏ 1. Cut the 1/4" x 3/4" x 24" balsa aileron LE to the
length shown on the plan and draw a straight line down
the center.
❏ ❏ 2. Use T-pins or medium CA to temporarily tack
glue the aileron LE to the TE spar. The root of the
aileron LE should be centered between the top and
bottom of the wing but the tip of the aileron LE should
be positioned so the line is approximately 1/16" below
the top of tip rib W13.
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