T-27 Tucano 20cc 1.2 2022
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Fuel tank installation
To install the fuel tank, first fix the front plywood tray supplied with the model airplane with 30 to 40 minutes
epoxy glue on the wooden rails inside the fuselage. The tray has openings for fixing the tank and batteries with
nylon or Velcro clamps. Assemble the tank connections according to the manufacturer's instructions,
considering the chosen fueling system (read below), checking that it is free of leaks and with the clunk(s) free
in all possible positions. Main fueling options:
Filling valve:
we recommend Kwik Fill DUBRO (DUB 335)
connected between the fuel tank and the fuel inlet of the engine. In this case, the tank needs only 2 entry and
exit routes: a clunk that fills/empty the tank and sends fuel to the engine and vent line for air and excess fuel
indicating a full tank;
“T” connector:
we recommend Hangar 9 (HAN 116) connected between the fuel tank and
the engine's fuel inlet. In this case the tank needs only 2 ways of entry and exit: clunk that fills/empty the tank
and sends fuel to the engine and vent line for air and excess fuel indicating full tank and
Third way of the tank:
we recommend DUBRO (DUB 840) connected directly to the fuel tank via a third way, with an independent
clunk. In this case the tank needs 3 ways of entry and exit: clunk 1 that fills/empty the tank, clunk 2 that sends
fuel to the engine and vent line for the exit of air and excess fuel indicating full tank. The fuel valve or the
support of the fueler cap must be fixed to the firewall in plywood glued with 30 to 40 minutes epoxy or in the
engine cowling, with easy access.
We recommend the 16oz DUBRO (DUB 416) tank (480cc) for 8 to 10 minute flights. It is necessary to change
the original sealing rubber of the 16oz tank to use gasoline. Use the DUBRO DUB 400 rubber. If a longer flight
time is desired, the 20oz DUBRO tank (DUB 420) (600cc), also changing the original sealing rubber to use
gasoline. For tank fuel connections, we recommend
3/32”
tygon tubes (DUB 800) and safety clips (DUB 677).
Position the tank and batteries as far forward as possible and check that they are securely attached. Use a fuel
filter (DUB 340).
When using glow fuel, we recommend
3/32”
silicone tubes (2.3mm) (DUB 222). Other fuel tanks from other
manufacturers can be used since they meet the required capacities and dimensions. Transparent tanks are very
suitable to facilitate the inspection of the internal connections, clunks and tubes, as well as the amount of fuel.
Above: fuel tank with tygon tubes fixed to the fuel tank tray with nylon ties (left) and positioned on rails inside
the front of the fuselage (right).
