Wing Assembly; Install The Dihedral Brace - Model Tech SUKHOI 40 Instructions Manual

If you should find a part missing or have questions about assembly, please call or write to the address below:
**SUGGESTION** To avoid scratching your new airplane, do not unwrap the pieces until they are
needed for assembly. Cover your workbench with an old towel or brown paper, both to protect the aircraft
and to protect the table. Keep a couple of jars or bowls handy to hold the small parts after you open the
bags.
**NOTE** Please trial fit all the parts. Make sure you have the correct parts and that they fit and are
aligned properly before gluing! This will assure proper assembly. Since the Sukhoi is hand made from
natural materials, every plane is unique and minor adjustments may have to be made. However, you
should find the fit superior and assembly simple.
PARTS REQUIRED
{2} Wing Halves w/Ailerons and Hinges
{1} Plywood Wing Dihedral Brace (W-36)

INSTALL THE DIHEDRAL BRACE

1) Look at the face of each root rib on both
wing halves. Notice how the excess covering ma-
terial overlaps onto them. Using a modeling knife,
carefully cut away the covering from both of the
root ribs. Leave about 1/16" of covering over-
lapping so it does not pull away.
It is important that the covering be removed
from the root ribs. This will ensure an ad-
equate wood-to-wood glue joint and prevent
wing failure during flight.
2) Using a ruler and a pen, locate and
mark the centerline of the wing dihedral brace
(W-36). Draw a vertical line at this location
on each side. See photo # 1 below.
Photo # 1
DIHEDRAL BRACE
Customer Service Center
18480 Bandilier Circle
Fountain Valley, CA. 92728
Phone: (714) 963-0329
Fax: (714) 964-6236
E-Mail: globalhobby@earthlink.net
DRAW CENTERLINE
3) Test fit the dihedral brace into the ply-
wood box in each wing half. The brace should
slide into each wing half up to the centerline. If it
does not, remove the brace and lightly sand the
edges and tips until the proper fit is obtained. See
photo # 2 below.
Photo # 2
DIHEDRAL
BRACE
The dihedral brace is cut in the shape of a
"V" on the bottom and is flat on the top. It
should be installed with the flat side facing the top
of the wing to form the proper dihedral angle when
the wing halves are joined.
4) Test fit both of the wing halves together
with the dihedral brace temporarily installed. Do
not glue it in at this time! The wing halves should
fit together tightly with little or no gaps in the center
section joint. If the center section joint is not tight,
remove the wing halves and lightly sand the edges
and tips of the dihedral brace. Reinstall the wing
halves and brace and test the fit until you are satis-
fied with the fit of the wing halves.
5) When satisfied with the fit of the wing
halves, remove the halves and the dihedral brace.
5