RIGGING YOUR ENGINE
FUEL SYSTEM:
To rig your R9 engine for fuel, first you will need a
32 to 50 ounce fuel tank. The fuel tank must be adapted to use
gasoline. Your local hobby dealer can sell you the necessary parts
to accomplish this. All fuel lines need to be Tygon flexible fuel
tubing or gasoline compatible equivalent. When rigging the fuel
lines, run a line from the pickup port on the fuel tank to the electric
fuel pump (end with hex). Next run a line from the fuel pump (flat
end) to the port on the side of the carburetor. The top port (on the
carburetor) is a vent that allows the diaphragm in the carburetor to
work. If using a fuel filter, make sure it is gasoline compatible and
install it between the fuel tank and the fuel pump. The vent line on
the fuel tank needs a large loop of line affixed to the top of the fuel
tank and then exit on the outside of the airplane. The large loop (on
top of the fuel tank) insures that the vent line will not leak fuel. No
pressure line is required. Ad a third line to the fuel tank with a
stopper on the end. This line is used to fill the tank with fuel.
The fuel pump should be powered by a 6 to 12 volt battery. 2000 to
5000 mAh NiCad, NMH or LiPo is recommended. If using the larger
mAh battery, the one battery can be used for both the fuel pump and
the CDI ignition system. It is recommended to have a separate
on/off switch for the fuel pump. This allows you to prime the engine
without the ignition being on.
IGNITION SYSTEM:
When rigging the CDI ignition box to your
engine, start by determining which cylinder is #1 cylinder. Hold the
engine with the scale magneto facing straight up. The scale
magneto is the black part between the two scale distributors (round,
silver canisters) on the nose cone housing of the engine. With the
engine in this position, look at the bottom most cylinder of the 9
cylinders. This is #1 cylinder. The spark plug wires starts at #1
cylinder and progresses in a counter clockwise direction (when
looking at the front of the engine, propeller end).
