Dynaflite GPMA0525 - Manual (Page 13)

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8. Label both sets of die-cut 3/32" wing ribs
as shown in the sketch and carefully remove them
from their die sheets. If any of the ribs are difficult to
remove, cut around them first. Remove any die-
cutting irregularities or slivers with a hobby knife or
sandpaper.
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9. Place ribs 3 through 9 on the bottom spar.
If necessary, trim the notch in rib 9 so it will fit the
bottom spar at the angle on the plan.
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10. Cut the bottom center section sheeting
from a 1/16" x 3" x 24" balsa sheet (if you’re
building your second wing panel—the left one—
use the remainder of the same 1/16" x 3" x 24"
piece you used when you built the right wing
panel). Accurately align the edge of the sheet with
the end of the wing where shown on the plan and
pin it in position. Place ribs 1 & 2 over the sheeting
where shown on the plan.
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11. Place the 1/8" x 3/8" x 24" balsa sub trailing
edge (TE) up against the ribs over its location on
the plan. Pin a straightedge to the plan tightly up
against the sub TE to hold it in position. Trim any ribs
as necessary to make sure the sub TE will remain
straight.
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12. One at a time, glue ribs 3 through 9 to
the sub trailing edge and the bottom spar. As you
proceed, make certain the sub TE and the ribs
are contacting your building board.
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13. Use a straightedge to align ribs 1 & 2
with the tick marks on the plan. Then glue them to
the bottom center section sheeting, the bottom
spar and the sub trailing edge. Glue the center
section sheeting to the leading edge skin and the
sub trailing edge.
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14. Using the same 1/16" sheet you used for
the bottom center section sheeting, cut four
shear webs to fit between ribs 2 through 6. Test
fit, then glue the shear webs between the ribs.
Make certain that the shear webs are the correct
height so they will contact the top spar, yet allow
the top spar to fully seat in the notches of the ribs.
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15. Test fit, then glue a 1/18" x 1/4" x 24" top
spar to the ribs and the shear webs. Note that the
top of the spar should be even with the tops of
ribs 1 and 2 to accommodate the top center
section sheeting.
1 2 3
4 5 6
9 8 7
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