Top Flite TOPA0155 - Manual (Page 53)

❏
7. Cut the rest of the holes in the cowl the same way.
❏
8. Assemble the fuel tank. Study the following
photos and examine your particular engine mounting
setup to determine the positioning of the fuel tank,
servo tray and throttle pushrod. Take a few moments
to plan the installation. Be certain the throttle
pushrod and fuel tank will not interfere with each
other. The servo tray can be used to hold the tank in
position. If you intend to duplicate the setup depicted
in this manual, most of the work has already been
done for you!
❏
9. Drill a 3/16" [4.8mm] hole through the firewall
for the throttle pushrod guide tube. Cut a piece of
3/16" [4.8mm] guide tube leftover from the elevator
or rudder to a length of 2" [50mm]. Roughen the
outside so glue will adhere, then insert the guide
tube into the hole you drilled in the firewall.
❏
10. Bend the 18" [457mm] wire pushrod as
required to align with the arm on the carburetor.
Temporarily connect the pushrod to the carb with a
nylon ball link and a 0-80 ball and 0-80 nut.
❏
11. Glue both of the larger pieces of the die-cut 1/8"
[3.2mm] plywood engine baffle (EB) together. Test fit
the engine baffle inside the cowl. Rotate the baffle so
the opening will be centered over the head of the
engine. Trim the baffle as necessary so it can be
positioned inside the cowl halfway over the engine as
shown on the plan. (Although the cowl in the photos is
already painted, yours should not yet be).
❏
12. Use medium CA to tack-glue the baffle into
position. Test fit the cowl to the fuse and trim the
baffle as necessary to clear the engine.
❏
13. Trim the remaining two smaller portions of the
engine baffle as necessary to fit close to the cylinder
and head of the engine. Glue them into position.
❏
14. Use 30-minute epoxy and microballoons to
make a small fillet all the way around both sides of
the baffle securely gluing it to the inside of the cowl.
Complete radio installation
❏
R1. If installing retracts, connect about 12" [300mm]
of air line to the air tank. Glue the tank into position
where shown on the plan with RTV silicone or epoxy.
Hint: If using epoxy, roughen the tank where it will
contact the formers with coarse sandpaper.
❏
2. Test fit the throttle servo and retract air valve
servo (if using retracts) in the die-cut 1/8" [3.2mm]
plywood servo tray (ST). If necessary, enlarge the
openings in the tray to accommodate the servos.
Glue strips of leftover 1/8" [3.2mm] plywood to one
side of the tray to reinforce the servo mounting
screws. Mount the servos to the servo tray with the
screws that came with the servos.
❏
3. Wrap the fuel tank with 1/2" [13mm] R/C foam
rubber. Place the fuel tank and the servo tray in the
fuse. Hold the servo tray up to the rear of the tank to
determine exactly how the tray and the tank will be
positioned. The servo tray may be positioned against
the aft edge of the tank to hold it in position.
-53-