in the first three rib "bays". NOTE: if you are installing
spoilers in the wing or may add them in the future, install
the web between the two W2S ribs on the FRONT of the
spars to make room for the spoiler horn.
IF YOU ARE BUILDING A ONE-PIECE
WING, SKIP AHEAD TO "BUILD THE
OUTER WING PANEL" ON PAGE 12. STEPS
15 THROUGH 22 ARE FOR A 2-PIECE WING
ONLY.
DD 15. Locate the 1/8" die-cut sheet (SPRTW04) that
contains the Dihedral Braces, the Leading Edge Brace and
the Wing Joiner Lamination. Line a ruler up with the two
embossed cut marks and draw a line across both of the
dihedral braces.
DD 16. Punch out the two dihedral braces and cut them in
half with a razor saw along the lines you just drew. Note:
these braces are supplied in one piece for the bolt on wing
option. Also punch out the wing joiner lamination from that
sheet and set it aside for the next step. The leading edge brace
is not used in a two-piece wing.
DD 17. Punch out the three C1 clamps from the 1/8" die-
cut plywood sheet (SPRTW08). Test fit two of the dihedral
brace "halves" to the "root" (inner) end of the inner panel
spars. One brace should be installed on the front of the spars
and the other on the back. The edge that you cut with the razor
saw should be near the end of the spars and it should be placed
so that it slants in at the top (towards the middle of the wing).
Use the C1 clamps to hold the braces in place and test fit the
wing joiner lamination into the box formed. This "box" will
be referred to as the "joiner box". The wing joiner lamina-
tion is used to make sure the spars remain the correct distance
apart. (See photo at the top of the next column.)
DD 18. Remove the clamps and apply a bead of epoxy
along the spar edges (thick CA will also work but be very
careful to get things aligned properly before the glue cures).
Install the braces and hold in place with the C1 clamps. A
good glue joint is important here but be careful not to get any
excess glue inside the box formed by these braces or the wing
joiner will not fit inside. Also test the size of the joiner box
with the joiner lamination while the glue is curing.
DD 19. Tightly wrap the joiner box with a strong thin
thread and then soak it with thin C/A. This will add a lot of
strength to the joiner box. Do not overlap the thread or allow
it to build up too thick.
DD 20. Locate one of the 1/16" x 3" x 30" Balsa Sheets
(SPRTW 17) and cut it into 6 pieces 2-3/8" long. Slide one of
the sheets in place in front of the joiner box and trim to fit. Use
another sheet to shim up the frontedge (See sketch nextpage).
Glue it in place with thick CA.
11
