Top Flite TOPA0150 - Manual (Page 23)

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9. Cut ten 3/16" x 3/16" x 36" balsa stringers to the
correct length, then glue them into the notches in the
formers on the bottom of the fuse. Carefully view the
formers and remove any twist as you glue the
stringers to them. The stringers nearest the main
stringer will have to be spliced together at F-5. Trim
the ends of the stringers even with F-1, F-4, F-8 and
F-12.
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10. Sand the formers and stringers, blending them
together.
Sheet the bottom of the fuse
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1. Sheet the right side of the fuse from F-1 to F-9
with a 1/16" x 3" x 36" balsa sheet. The aft end of the
sheet must align with the middle of F-9. The same as
you did when you glued the first piece of sheeting to
the top half of the fuse, we recommend you first glue
the sheet to the main stringer, allow the glue to dry,
then wet the sheet and glue it to the rest of the
stringers and formers. Trim the sheeting even with
the lower fuse crutches.
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2. If you notice that, after it has been glued into
place, the sheeting bows noticeably outward in the
wing saddle area between F-4 and F-7 (it most likely
will), first allow the water you applied for bending to
fully dry. This may take a few hours or even
overnight. If the sheeting is still bowed outward, cut
that part of sheeting from the fuse and replace it with
a separate piece of leftover 1/16" sheeting.
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3. Sheet the left side of the fuse the same way.
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4. Sheet both sides of the fuse from F-9 to F-11
with one 1/16" x 3" x 30" balsa sheet.
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5. Glue the pushrod guide tubes to F-9 & F-10.
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6. Sheet the bottom of the fuse from F-8 to F-11
with two 1/16" x 3" x 30" balsa sheets.
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