Mounting The Engine To Firewall; Fuel Tank; Fuel Tank Assembly - Model Tech SUKHOI 40 Instructions Manual

8) On the two horizontal lines you just
drew, measure and place marks 1/2" to the
left and 13/16" to the right of the vertical cen-
terline (looking at the firewall). See photo #
29 below.
Photo # 29
9) Hold the motor mount assembly up to the
firewall and double check that the four intersect-
ing lines line up with the four predrilled holes in
the motor mount.

MOUNTING THE ENGINE TO FIREWALL

10) Using a 1/8" drill bit, drill the four mount-
ing holes through the firewall for the motor mount.
11) Mount the motor mount assembly to the
firewall using the four 3mm x 20mm machine
screws, four 3mm flat washers and four 3mm blind
nuts. Tighten the screws completely until the blind
nuts have been completely seated in the back of
the firewall. See photo # 30 below.
Photo # 30
PARTS REQUIRED
{1} Molded Fuel Tank
{1} Rubber Stopper
{1} 20mm Diameter Front Squash Plate
{1} 18mm Diameter Rear Squash Plate
{1} 3mm x 20mm Machine Screw
{1} Weighted Metal Pick-Up
{3} Aluminum Tubes
{1} 90mm Silicon Fuel Tube

FUEL TANK ASSEMBLY

1) The fuel tank assembly incudes 3 differ-
ent length aluminum tubes. Discard the shortest
of the three. It will not be used.
The 50mm length tube is used for the fuel
line pickup and the 80mm tube is used for
the vent/pressure line.
2) Using 220 grit sandpaper carefully
smooth each end of the two tubes. This will pre-
vent the fuel line from being cut.
3) Push the two aluminum tubes through the
rubber stopper until 1/2" protrudes from the front
of the stopper. Slide the 20mm diameter front
squash plate over the tubes at the front of the
stopper and slide the 18mm diameter rear squash
plate over the tubes at the rear of the stopper.
Insert the 3mm x 20mm machine screw into the
center hole in the front squash plate, then screw it
through the stopper and into the rear squash plate.
Do not completely tighten the screw at this time.
4) Carefully bend the longer of the two tubes
up at a 45º angle. This tube is the vent tube.
When the stopper assembly is installed in the tank,
the top of the vent tube should rest just inside the
bubble in the top of the tank.
5) Slide the silicon fuel tubing, with the
weighted pickup attached to one end, onto the
fuel pickup tube. See photo # 31 below.
Photo # 31
RUBBER
FRONT
STOPPER
SQUASH
PLATE
FUEL
REAR
PICKUP
SQUASH
TUBE
PLATE
6) Test fit the stopper assembly into the
tank. It may be necessary to remove some of
the flashing around the tank opening using a
modeling knife. If flashing is present, make sure
none falls into the tank.
16
VENT TUBE
WEIGHTED
PICKUP
FUEL TUBING