10
FUEL
The FL-70 should be operated on a methanol based
fuel containing not less than 20% (volumetric) castor
oil, or a top quality synthetic lubricant (or a mixture of
both), plus a small percentage (5-15%) of
nitromethane for improved flexibility and power. (The
carburetor is adjusted at the factory for a fuel
containing 20% lubricant and 15% nitromethane.)
Some commercial fuels also contain coloring
additives as an aid to fuel level visibility. In some
cases, these additives have indicated slightly
negative effects on the performance. We would
suggest that you use such fuels only if you are
satisfied that they do not adversely affect running
qualities when compared with familiar standard
fuels. When changing to a fuel brand or formula that
is different from the one to which you
are accustomed, it is a wise precaution
to temporarily revert to in-flight
running-in procedures, until you are
sure that the engine is running entirely
satisfactorily.
Items necessary for starting
Tools, accessories, etc.The following items are
necessary for operating the engine.
BEFORE STARTING
GLOWPLUG IGNITER
Commercialy available handy
glowplug heater in which the
glowplug battery and battery
leads are integrated.
GLOW PLUG
O.S. Type F glowplug is installed in the
engine.
Alternatively, one of the
purpose-made manual or
electric fuel pumps may be used
to transfer fuel directly from your
fuel container to the fuel tank.
FUEL PUMP
Manual
Electric
11
Install a filter on the outlet tube of your
refueling container to prevent entry of
foreign matter into fuel tank. O.S.
‘Super Filters’ (large and small) are
available as optional extras.
To prevent the pickup from adhering to
the tank wall under suction and
restricting fuel flow, slots may be filed
I the end of the weight. Alternatively,
O.S. Non-Bubble Weight is available
as an optional extra.
A fuel tank of approximately
300cc capacity is suggested.
This allows around 10 minutes
flying time, dependent upon the
type of fuel used, the size of propeller and on
the amount of full-throttle to part-throttle
operation throughout the flight.
It is recommended to install a good
in-line filter between the fuel tank
and carburetor to prevent entry of
foreign matter into the carburetor.
Model engine fuel is poisonous. Do not
allow it to come into contact with the eyes or
mouth. Always store it in a clearly marked
container and out of the reach of children.
Model engine fuel is also highly flammable.
Keep it away from open flame, excessive
heat, sources of sparks, or anything else
which might ignite it. Do not smoke, or allow
anyone else to smoke, near to it.
Reminder!
Electric Starter and
Starter Battery
Required when starting
the engine.
12-Volt lead-acid battery
Electric Starter
O.S. Non-Bubble Weight
O.S. Super Filter (Fuel Can Filter)
Fuel Tank
Fuel Filter
