Also, note that the correct position for the fuel tank, mounted inside
of the fuselage, is with the off-center stopper hole toward the top.
Gently bend the aluminum overflow tube upward to just reach, (but
not touch), the top of the tank on the inside. Adjust the length of
the internal silicon tubing to allow free movement of the fuel pick-
up weight inside the tank, at its rear. Insert the stopper assembly
into the neck of the tank, firmly seating the stopper. Slip short
lengths of silicon fuel tubing over the two exposed aluminum fuel
lines and identify each of them as "vent" and "carb" with small
pieces of tape. This helps later when connecting the fuel lines to
the proper locations.
Secure the stopper assembly in the tank by tightening the
compression bolt in the center of the stopper assembly. Tighten
this bolt firmly, causing the rubber stopper to expand in the tank's
hole, creating a secure seal around the neck of the tank.
FUEL TANK FOR GASOLINE ENGINES:
If you plan to use a gasoline engine in your Rascal 110, then you
must assemble your fuel tank, using gas compatible parts.
Because gasoline attacks and destroys the typical silicon fuel
tubing used for glow engines, as well as the rubber stoppers used
in most R/C fuel tanks, these items must be replaced with
gasoline-compatible parts.
Sullivan Products makes a neat
"Gasoline/Diesel" Fuel Tank Conversion Kit (P/N #484) for this
very purpose.
This little package includes a gas compatible
stopper, Tygon fuel pick-up tubing and molded nylon front and rear
compression plates. Du-Bro Products, also, makes a replacement
tank stopper for gasoline use (P/N #400) and Tygon fuel line (P/N
#799). Note that the Rascal 110 fuel tank is usable with either the
Sullivan or Du-Bro replacement stoppers. Remember to use only
gas-compatible fuel tubing for gasoline engines, such as Tygon -
sold by both Du-Bro and Sullivan.
The fuel tank body itself is gas compatible and can be assembled
in the same way as described earlier, using a replacement gas
stopper and Tygon fuel lines.
ENGINE AND FUEL TANK INSTALLATION:
This assembly phase requires some custom installation work,
based on the particular engine size and type that you've chosen
for your Rascal 110. Note that the fuselage has been built with the
correct right and down thrust adjustments already incorporated
into the firewall. These are:
2
O
Right Thrust
2.5
O
Down Thrust
In addition, true vertical and horizontal centerlines, for placement
of the engine motor mounts, are marked on the firewall. Centering
your engine, using these locators, allows the cowl to fit almost
perfectly at the front. Note that the vertical centerline is off-center
to the left, allowing for the built-in right thrust. Of course, some
"fudging" with the center lines can be done to fit your engine, as
long as it's not excessive.
The following engine installation instructions will cover both
4-stroke and gasoline engines. Installing a 2-stroke glow engine in
this model is similar in concept to the installation of 4-strokes, with
the only real differences being the location of the throttle pushrod
and the many choices for mufflers. Because it's impossible to
cover every engine that might fit into these three groups, you will
have to decide for yourself if your particular engine is suitable for
this model and if it can be made to fit.
Mufflers must also be considered for any engine installation. The
different types, sizes, and configurations of commercially available
mufflers is huge. In the Rascal 110, the most ideal choice for an
engine/muffler set-up would be an inverted engine with a Pitts-
style muffler system. This keeps the nose "clean" with only the
bottom of the cowl having to be opened for cooling.
Some
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