Top Flite TOPA0101 - Manual (Page 32)

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5. Cut off a 5" piece of tapered aileron/flap
stock . This is the inner flap. Angle the inboard end
to match the fuse fairing. Trim its length so it fits
just inside of
(A) .
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6. Tack glue the inboard flap section in place.
(Glue it solidly for fixed flaps.)
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7. Put a mark 11-1/2" inboard of the wing’s tip
rib T-7. This is the outer flap/aileron junction.
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8. Cut off a 7-1/4" length of flap/aileron stock.
This is the outer flap . Trim the inboard end of the
outer flap to match angle on the plan. (100 deg.)
Place the outer flap in position against
(A) . Trim the
length of the outer flap until it extends just to the
outer flap/aileron junction mark. The cut-off angle at
the outboard end of this flap is 90 degrees.
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9. Tack glue the outer flap in place. (Glue it
solidly for fixed flaps.)
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10. Glue the die-cut balsa flap ribs to A as
shown the photos. (These parts are found in die-
cut sheets CRS6S03 and CRS6S05. Use the 3/32"
parts at the ends of the middle flaps and the 1/16"
parts in the middle.) Notice that waxed paper is
used to separate the flap ribs from the other flaps if
you are making operational flaps. (Omit the waxed
paper for fixed flaps).
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11. Make the bottom middle flap skins from
1/16" balsa. Note the fore and aft grain direction.
Taper the very aft edge of the skin slightly. This will
yield a thinner and stronger TE. Glue the bottom
skin to the flap frame.
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12. If you are making operational flaps, cut four
3/4" lengths from 3/8" x 1/2" balsa stock. Glue
these “hinge anchors” to the TE next to the bottom
skin as shown.
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13. Fit a piece of 1/16" sheeting for the top skin.
Taper the aft edge of the skin as you did on the
bottom skin. Glue the top skin in place (if you are
building operating flaps, do not glue the flaps
solidly to the wing). Apply thin CA to the TE to
harden it.
Skip to WING TIPS if you use fixed flaps
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14. Mark hinge locations clearly on the wings
and the flaps. Mark lines 1/16" from the seam on
both sides of the junctions where the middle flaps
meet the other flaps (see photo). This material will
be removed to allow the die-cut 1/16" plywood
flap
ends to be glued to concerned flap ends.
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15. Pop loose all flap sections. Glue the 3/16" x
7/8" pieces cut from the stick provided to the front
edge of the inner and outer flaps. The die-cut 3/16"
balsa
flap LE (F) is glued to the front edge of the
middle flap. Use a bar sander to true the ends of
the added wood.
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