Top Flite TOPA0130 - Manual (Page 11)

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5. Put ribs V-2 and V-3 into their places and
glue them to the LE and TE. Remember, all jig
tabs should contact the work surface.
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6. Glue the die-cut 3/32" balsa Fin Gusset
into the corner of V-4 and the Trailing Edge.
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7. Apply extra CA+ glue to any joints that do
not appear to be well glued.
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8. Blend the LE to match the ribs on the
upward facing (left) fin side. Sand the TE, if
necessary, to blend smoothly with the ribs.
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9. Make a skin for each side of the fin using
the 1/16" balsa sheet left over from the stab
skins. Make the skin so it overhangs past V-1
about 5/8"; this will allow fitting to the stab later.
With the structure flat on the table, glue on the
left skin.
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10. Remove the fin from the building board
and trim off the jig tabs. Blend the LE and TE to
the ribs on the right side of the fin.
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11. Use medium or thick CA to glue on the
right skin. Be sure to get a good bond between
the ribs and the skin.
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12. True up the edges of the fin sheeting with
a sanding block. Shape the LE to match the
cross section on the plans.
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13. Glue the shaped 3/4" balsa fin tip to the
top of the fin. Use a razor plane and a sanding
block to do the initial shaping of the tip. Final
shaping should be done later, with the fin taped
to the rudder.
BUILD THE ELEVATORS
NOTE: Build both elevators using
the following steps
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1. Place the die-cut 3/32" balsa Elevator
Bases (EB) on the plans and mark "Rib"
locations on both sides using the "tick" marks on
the plans.
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2. Draw a centerline on both sides of the
die-cut 1/4" balsa Elevator LE. Draw two
parallel lines 1/16" away from the centerline on
the aft side.
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3. Hold the Elevator Base centered
between the lines on the Elevator LE. The
narrow end of the LE is positioned at the
elevator tip . Use CA to glue the Base to the LE.
❏ ❏
4. Cut "ribs" from the 3/32" x 3/8" x 36"
balsa sticks and glue them onto both sides of
the elevators at the locations you previ-
ously marked.
❏ ❏
5. Glue a 5/16" x 7/16" x 1-3/4" balsa
Elevator Root Block to each side of both
Elevator Bases.
❏ ❏
6. Glue a 5/16" x 1/2" x 1-1/2" balsa
Elevator Tip Block to each side of both
Elevator Bases.
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