Dynaflite DYFA1009 - Manual (Page 16)

BUILD THE OUTER
WING PANELS
Start with the right outer wing panel so your
progress matches the photos.
Ui l—l 1. Cover the outer panel of the right wing
plan with wax paper. Use the "crossed T-pin"
method to pin a 1/8" x 1/4" x 18-1/4" basswood
bottom spar in position so the root end aligns with
the centerline at W-3.
l-l Q 2. Accurately cut a 1/16" x 15/16" x 36"
balsa sheet to a length of 18". Pin it in position over
the plan so both ends extend past the ends of the TE
on the plan. You will sand the ends of the TE
sheeting flush with the end ribs later.
Q Ul 3. Use a straightedge and a hobby knife to cut
halfway through one W3-T rib to accommodate the
1/16" dihedral brace the same way as you did at
step 6 on page 11. Make the slot on the side of the
rib that will be visible when the rib is in position.
Q Q 6. Position a 1/4" x 1/2" x 18" balsa
leading edge over its location on the plan so the
root aligns with the centerline at W3-T. Securely pin
the LE to the building board so it tightly contacts the
wing ribs. Then glue it in position with thin CA.
Ul LJ 7. Remove the T-pins from the bottom TE
sheeting. Replace them in the aft end of the ribs to
hold the rear of the wing panel securely to your
building board.
Q Q 8. Test fit the other half of the 1 /16" x 15/16"
x 36" trailing edge sheet. 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.
Q Q 9. Use a 1 /8" x 1 /4" basswood spar to mark
the guide line, then bevel the edge of the upper
TE sheet.
Q Q 10. Glue the upper TE to the bottom TE and
ribs with medium CA.
Q Q 4. Test fit ribs W3-T through W9 to the bottom
spar and bottom TE over their locations on the plan.
If necessary, adjust the notches in the ribs so they fit
the spar and bottom TE.
Q Q 11. Test fit, then glue, the 1 /8" x 1 /4" x 18-1 /4"
basswood top spar to the ribs with medium CA.
C.] Ql 5. Set rib W3-T aside and glue all the ribs
except W3-T in position with thin or medium CA.
Use a builder's triangle to make sure the ribs are
perpendicular to the work surface as you glue them. LJ LI 12. Cut a 1/8" x 1/8" x 36" balsa stick into
two 18" long pieces. Test fit, then glue, the two 18"
outer turbulator spars in the notches of ribs W4
through W9 so the ends align with W9.
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