Dynaflite DYFA1009 - Manual (Page 12)

Q Q 11. Trim the 2-1/8" x 6" sheet you just made
so it fits between the bottom main spar and the
bottom trailing edge sheet. Accurately trim the root
edge of the sheet (the left edge if you are building
the right wing panel, the right edge of the sheet if
you are building the left wing panel) so it aligns with
the centerline of the wing. It's okay if the other edge
of the sheet extends past rib W2. Pin the sheet in
position but do not glue it to the wing yet.
Q Q 8. 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 of the wing. Securely
pin the LE to the building board so it tightly contacts
the wing ribs. Then glue it in position with thin CA.
U U 9. Mark the location of rib W2 on the leading
edge and trailing edge.
Q Q 12. Trim the third 1/16" x 2-1/8" x 3" sheet to
fit between the leading edge and the bottom spar so the
root end accurately aligns with the wing centerline.
Note: It is important that the root edges of the
bottom sheeting accurately align with the wing
centerline because those edges will be used as a
guide to determine the position of rib W-1.
Q Q 10. Cut three 2-1/8" wide strips from the
1/16" x 3" x 30" balsa sheet. Glue two of the strips
together to make the 2-1/8" x 6" aft bottom
sheeting that fits behind the bottom spar.
Q Q 1 3. Use the lines you marked as a guide to
glue rib W-2 in position with medium CA. Then glue
the forward and aft 1/16" bottom center section
sheeting to the spar, LE, TE and rib W-2.
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