Dynaflite DYFA1009 - Manual (Page 13)

Q Ql 14. Remove the T-pins from the bottom TE
sheeting. Then replace them in the aft end of the ribs
to hold the rear of the wing panel securely to your
building board.
1/4" BEVEL
Q Q 15. Test fit the other half of the 1/16" x
15/16" x 36" trailing edge sheet that you cut to a
length of 18" in step 5. If necessary, adjust the
notches in the ribs so the aft edge of the upper TE
will align with the aft edge of the lower TE.
BEVEL THE UPPER TE TO FIT
THE LOWER TE.
LJ LJ 18. Glue the upper TE to the bottom TE and
ribs with medium CA.
LJ U 16. Use a 1/8" x 1/4" x 18-1/4" basswood
spar as a guide to make a line 1 /4" from one edge
of the upper TE sheet with a ballpoint pen. See the
sketch at step 18.
LJ LJ 19. Use a builder's triangle or square and a
ballpoint pen to mark, then cut, six 3/4" vertical-grain
shear webs from the 3/32" x 3" x 15" balsa sheet.
Q [-I 20. Test fit but do not glue the shear webs
between the ribs. If necessary, trim each shear web
so the top spar will fully seat in the notches of the
ribs and contact the tops of the webs.
LJ U 17. Use the line as a guide to bevel the aft
edge of the sheet with your bar sander and 220-grit
sandpaper.
LJ U 21. Use medium CA to glue five of the shear
webs in the center of the bottom spar between all
the ribs. You will have to temporarily remove the
T-pins, then reinsert them through the shear webs to
hold the wing to your building board.
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