RANS S-20 RAVEN
TEXT MANUAL
06/09/2015
05-01
WING – MAIN STRUCTURE ASSEMBLY
NOTE: LORD brand FUSOR 108B/109B Adhesive is recommended for bonding
the sheet metal wraps to the FWD & AFT wing spars. Leading Edge, Root, and
Tip Wraps are riveted with 1/8” Stainless Steel Flush rivets. A suitable 1/8”
Dimpling Tool and Counter Sink will be required. Aircraft Spruce has an
inexpensive 1/8” Pop Grip Dimpler.
IMPORTANT: Wings are mirror assemblies, repeat the procedures described for
one to both, unless otherwise specified.
It is
NOT
necessary to trial fit the wings to the fuselage after building the wing
frames. We recommend having all assemblies and installations related to the
wing completed, before the wings are final installed to the fuselage.
WING SPAR ASSEMBLY
1.
Prior to the assembly of the Spars, it is important to familiarize yourself
with the orientation of the Spars. When working with long tubes such as
Leading and Trailing Edge Spars, padded sawhorses provide an ideal
workbench.
2.
Locate the root and tip end of both the Leading and Trailing Spars, refer to
FIGURE 05-02 and 05-02A
. You must also determine the forward and aft
side to each spar span wise.
3.
IMPORTANT: Double check that you have the spars correctly orientated
to a
ssemble a right and left hand
of each spar. Mark all four spars with
“left, right, forward, and aft”. Lengths of masking tape work well for
marking on.
NOTE: The left hand Leading Edge Spar is also identified by
the pitot/static mounting hole.
Refer back to
FIGURE 05-02
for location.
Be sure to build a left and right hand set of spars. Be sure the Lift Strut
Attach Plates are orientated correctly on each spar. Refer to
FIGURE 05-
03
.
4.
Locate the root end of both Leading Edge Spars and the 2 slotted Leading
Edge Spar Root Doublers.
5.
Squeeze the slotted Root Doubler together and slide it in the root end of
each Leading Edge Spars, with the slot facing down. Push the doubler in
with a block of wood until flush with the Spar root end. Refer to
FIGURE
05-05
.
HINT: A large hose clamp may be used to squeeze the Root
Doubler together to allow easier insertion.
6.
Transfer drill the root doubler # 30 using the pre-drilled holes in the spar
as a guide and cleco to the spar as shown in
FIGURE 05-05
.
