3.11 Using contact cement,
carefully position the hinges and
glue the completed aileron
assemblies to the trailing edges
of each wing. Glue the aileron
assemblies to the inside bottom
of the wings. BE SURE TO ALLOW
FOR HINGE ACTION WHEN GLUING THE
HINGE STRIP TO THE WING BOTTOM.
ALLOW YOUR COMPLETE HINGE FLUTE
TO BE EXPOSED BEYOND THE
TRAILING EDGE OF THE WING. Trim
any excess hinge strip flush with
the root of the wing.
HINGE FLUTE ON BOTTOM
FIGURE SO - PREPARING THE WINGS
LEAVE CLEARANCE FOR
HINGE TO FUNCTION!
4-MIL SPAR ALIGNMENT
STRIPS INSTALLED ALONG
LINES DRA WN WITH PEN
BETWEEN ALIGNMENT HOLES
RIGHT WING TOP INSIDE
GLUE AND SEAT BOTTOM
OF SPAR BETWEEN
ALIGNMENT STRIPS
RIGHT WING BOTTOM INSIDE
RIGHT HINGE STRIP
AILERON
EXERCISE THE WING LEADING EDGE
3.12 Using a hair dryer or heat gun at a very low setting, "warm" the scores on the inside leading edge of the winqs
to make them easier to work with. Using a good straight edge, carefully "exercise" (bend 90 degrees) each score from one
end to the other, to make sure they will bend properly when the wing is being folded up. Do this one score at a time Work
from one end of the wing to the other before working the next score.
MARK & INSTALL THE SPAR
3.13 Locate the pin-holes in the top and bottom of each wing which identify the mounting location of the spar Using
a good straight edge and ball-point pen, draw lines connecting the pin holes on the top and bottom of each wing to mark
the spar location. Place the spar on the wing and mark the locations of the dihedral braces on the wing top & bottom.
3.14 Locate the "grid" (1/2" wide X 28" long X 4-mil thick) of alignment strips and prepare them for gluing to the inside of the
wing. These strips support the spar from each side and help locate it for you when doing your final fold-up. Go ahead and coat
the inside of the wing between and about 3/8" outside of the lines you have drawn. Also coat one side of the grid of alignment
strips with contact cement. When ready, separate the strips from the grid with a hobby knife and carefully place them just outside
the lines connecting the pin-holes. THE ALIGNMENT STRIPS SHOULD ALLOW THE SPAR TO BE PLACED BETWEEN THEM AND SHOULD EXTEND
FROM THE DIHEDRAL BRACE TO 1/4" FROM THE END OF THE WING'S TOP AND BOTTOM (see illustration).
3.15 Apply contact cement to the bottom of the spar. When ready, seat the spar in between the alignment strips on
the bottom of the wings, gluing it in place. The center of the spar should rest where the wings join at the center.
CONSTRUCT THE WING CENTER RIBS
3.16 Locate the wing center rib pieces (B pieces) and construct the four rib sections using contact cement Each rib
section consists of identically shaped 6-mil AirCore pieces with the flutes "cross grained" for strength. Construct two forward
ribs and two rear ribs.
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