RANS S-20 RAVEN
TEXT MANUAL
05C-07
05/01
/2017
LEADING EDGE WRAP
51.
LORD brand FUSOR 108B/109B adhesive is recommended for bonding
the sheet metal wraps to the FWD & AFT wing spars. Three smaller
tubes should be sufficient. A plunger and 3 or 4 mixer tubes will also be
required.
52.
LORD 703 Prep/Cleaner should also be used. Both products are
available online, if not available locally.
53.
Unroll Leading Edge Wrap and lay it carefully on the Wing Ribs
positioned as illustrated in
FIGURE 05C-53
. Rivet the Leading Edge
Wrap Stringer to the underside of the Leading Edge Wrap.
NOTE: The
flange will be forward on the right Wing and aft on the left Wing.
Cleco
Wrap to Ribs. Stringer will set into cut-outs in the ribs.
NOTE: 1-inch
wide thin double-stick Acrylic foam tape is recommended on the Rib to
Wrap contact area. Leave the protective paper on the wrap side of the
tape until ready to final install the wrap.
54.
Using the Leading Edge Wrap as a guide, mark a line along the length of
the Spar. Remove the Wrap.
55.
Cleco the Leading Edge Wrap in place on the Wing. See to
FIGURE
05C-55
. If satisfied, rivet the Leading Edge Wrap to each Rib. Bond the
Wrap to the Spar.
IMPORTANT: The Wrap is retained to the Spar with
ONLY the adhesive.
It is important that you make a good bond between
the Wrap and the Spar.
CAUTION: Do NOT drill or install any rivets into
the Spar.
HINT: Masking tape on the Spar, just forward of the bond area,
will help prevent excess glue from bonding in unwanted areas.
56.
Bond the Leading Edge Wrap and Upper Root Wrap to the Leading
Edge Spar. Refer to
FIGURE 05C-56
Use a long straight board
(1x2x144") and several (6 minimum) “C” clamps (or similar devices,
RANS uses Stanley brand cushioned quick clamps) to retain the Wrap in
position until the adhesive cures. A piece of wax paper between the
board and the Wraps will prevent bonding the board to the Wraps.
Placement of the board and clamps on the Wraps when clamping is
critical so as not to deform the Wraps. Clamp only to the bonded area.
See
FIGURE 05C-56
.
57.
Bond the AFT end of the Upper Root Wrap to the Trailing Edge Spar.
Clamping is not necessary as 2-inch wide masking tape works well to
hold the Upper Root Wrap to the Trailing Edge Spar during bonding.
58.
After the epoxy has cured, remove the clamps, tape, and board. Clean
off any excess epoxy from the Wraps and Spars. If not already
previously done, rivet the Leading Edge Wrap to the Ribs and Upper
Root Wrap. Use a small amount of body putty to form a smooth
transition from the Wrap to the Spar. See
FIGURE 05C-58
. Carefully
sand excess body putty to profile.
