Top Flite TOPA0145 - Manual (Page 34)

❏ ❏ 5. Test fit the flaps into position. Sand as needed
to fit the flaps between the ribs with 1/16" [1.6mm]
clearance at each end.
❏ ❏ 6. Make a skin to cover the flap area from
another of the 1/16" x 3" x 30" [1.6 x 76 x 762mm]
balsa sheets and the portion of the skin that was cut
away when you sheeted the top of the wing in step
1. Glue the two sheets together.
❏ ❏ 7. Cut a 1/32" x 3/4" x 14-1/2" [0.8 x 19.1 x
369mm] plywood strip like your did for the bottom of
the flap.
❏ ❏ 8. Lay the plywood strip on the trailing edge of
the wing sheeting and cut a 3/4" [19.1mm] strip of the
balsa skin away as shown in the photograph. Glue
the balsa strip to the 1/32"x 3/4"x 14-1/2 [0.8 x 19.1
x 369mm] ply. Sand the balsa side of this assembly
so that the total thickness of the two pieces is
1/16"[1.6mm], the same thickness as the rest of the
wing skin. Edge glue the balsa and ply strip back into
the wing skin with the ply strip on the top.
.
❏ ❏ 9. Sand a taper on the balsa / plywood trailing
edge the same way as was done with the bottom of
the flap. Refer to the sketch in step 5 of "Building
the Flap".
Perform step 10 only if you are
building working flaps.
❏ ❏ 10. Glue the final portion of the wing skin into
position on the ribs.
Perform step 11 only if you are
not building working flaps.
❏ ❏ 11. Glue the final portion of the wing skin into
position on the ribs and to the bottom wing skin at the
wing TE.
❏ 12. Do the same for the other side of the wing.
❏ ❏ 13. Insert a leftover piece of 1/8” balsa between
the wing mounting block and the wing skin. Use a
1/8" [3.2mm] drill to drill a hole through the wing
mounting block and through the skin sheeting on the
top of the wing. This will provide a pilot hole to help
locate where to drill once the center gets sheeted.
❏ ❏ 14. Use pieces of the remaining 1/16" [1.6mm]
sheeting to sheet the remaining center section of the
bottom of the wing.
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