Top Flite TOPA0405 - Manual (Page 38)

a leftover piece of outer pushrod tube. Drill a 3/16"
hole through former F-3 so that the outer pushrod
tube is aligned with the throttle servo arm. Glue the
outer pushrod tube to the firewall and F-3.
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6. On our prototypes we mounted the air retract
fill valves to the firewall below the engine. Now is a
good time to drill a hole for the air line to pass
through the firewall.
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7. Fit a piece of foam rubber on the tank floor.
Assemble the fuel tank per the manufacturer's
instructions. Slide the fuel tank into the fuel tank
compartment and check its fit. You may want to glue
braces made from leftover balsa in the tank
compartment to prevent the tank from moving
around. Remember to use foam rubber around the
tank to prevent the fuel from foaming due to vibration.
❏
8. Drill two 1/4" holes in the firewall, one for the
fuel line to the carburetor and the other for the
overflow line, on gas engines, or pressure line on
glow fuel engines.
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9. Remove the engine and fuel tank.
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10. Glue the die-cut 1/8" plywood former tops
B8E, B9B, and B10B to the top of the corresponding
formers. Use a small square to make sure B8E is
perpendicular to the forward crutch.
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11. Finish cutting out the cockpit if you will be
installing the optional cockpit kit. If not, glue along
the partially die-cut cockpit floor to reinforce it.
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12. Glue in the die-cut 1/8" plywood formers
F-2, F-4, F-6 and the instrument panel (IP)
perpendicular to the crutch.
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13. Fit and glue the 1/4" x 1/4" x 30" balsa
stringers in the notches of the formers from the
firewall to the instrument panel.
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14. Fit and glue the 1/4" x 1/4" x 30" balsa
stringers in the notches of the former tops from
B8E to the stab. Trim the aft end of the stringers
where they join the stab and make certain the
bottom stringers are inset from the edge of the
fuse side to accommodate the aft deck side sheeting.
NOTE: If you prefer to run your receiver antenna
through the fuse, now is a good time to install an
outer pushrod tube (not included) in the fuse.
Make sure the tube does not interfere with the
operation of the tail wheel retract and elevator
torque rods.
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15. From the four 1/8" x 3" x 24" balsa sheets,
glue two of them together to make forward deck
sheets 1/8" x 6" x 24". Use the pattern on the fuse
plan as a guide to cut two forward deck sheets.
Save the leftover sheeting cut from the pattern.
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