Installing The Blind Nuts; Installing The Wing Bolt Doubler; Installing The Wing; Belly Pan Installation - Model Tech SUKHOI 40 Instructions Manual

4) Remove the ailerons from the wing. To
double check that the wing is square to the fuse-
lage, use a ruler and measure from each wing tip
to the rear edge of the fuselage. Both measure-
ments should be equal. See figure # 1 below.
Figure # 1
A

INSTALLING THE BLIND NUTS

5) When satisfied with the alignment of the
wing to the fuselage, hold the wing firmly in place
and use a 7/64" drill bit and drill two holes through
the wing and on through the plywood wing hold
down block inside the fuselage. The two holes are
located 1" in from the outside edge of each side of
the fuselage and 5/8" forward of the trailing edge.
6) Remove the wing from the wing saddle.
Drill out only the holes in the plywood wing hold
down block using a 1/4" drill bit.
Drilling out only these holes will allow easier
installation of the blind nuts in the next step.
7) Install the two 5mm blind nuts from un-
derneath the plywood wing hold down block. The
blind nuts can be installed using pliers by first re-
moving the portion of the balsa filler block di-
rectly above where the blind nuts are installed.
See photo # 6 below.
Photo # 6
BLIND NUT
A1
REMOVE BALSA
7

INSTALLING THE WING BOLT DOUBLER

8) Place the wing back into the wing
saddle, aligning the centerline marks. While
holding the wing firmly in place, set the wing
bolt doubler in place. The rear edge of the
doubler should be 1/8" forward of the trailing
edge of the wing and the sides of the doubler
should be centered over the centerline of the
wing. See photo # 7 below.
Photo # 7
CENTERLINE
9) While holding the doubler in place, use a
pen and draw around the doubler to outline it onto
the wing surface.
10) Remove the doubler. Using a modeling
knife, carefully remove the covering from just in-
side the outline.
11) Mix up a small amount of Kwik Bond 5
Minute Epoxy and use it to glue the wing doubler
to the wing. Allow the epoxy to fully cure.
12) Remove the wing and drill out the holes
through the doubler using a 7/64" drill bit. Use
the holes already drilled through the wing as a
guide.

INSTALLING THE WING

13) Place the wing back into the wing
saddle. Secure the wing in place using the two
5mm x 30mm machine screws and two 5mm
flat washers.
PARTS REQUIRED
{1} Molded Fiberglass Belly Pan
{2} Balsa Triangle Supports (D-33)
{4} Belly Pan Mounting Blocks (D-32)

INSTALLING THE MOUNTING BLOCKS

1) Trial fit one belly pan mounting block into
each corner of the belly pan. Use 220 grit sand-
paper with a sanding block to shape the blocks
WING BOLT
DOUBLER