Fuel / Fuel Care
The
JetCat
engine can use deodorized kerosene, 1-K kerosene or Jet-A1 for fuel. Fuel
must be mixed with 5% synthetic turbine oil.
Example formula:
1 quart of oil in 5 gallons of fuel.
JetCat recommends Aeroshell 500 turbine oil.
Fuel System
The input and output fuel tubing must be connected to the electronic shut-off valve as per
the drawing. The tube from the pump, fuel in, is towards the heat shrink tubing covered coil.
The tube to the engine, fuel out, is towards the edge of the valve.
It will not shut off if
connected incorrectly!
When installing the fuel lines on components with nipples, slightly warm the tubing before
connecting. This will soften the tube, making it easier to install. When installing tubing on a
metal tube, secure the tubing by placing a tie-wrap around the connection. To remove
tubing from nipples, you must cut the tubing off. Be careful not to damage the nipple when
cutting off tubing. To insert tubing into Festo quick release fittings, use firm pressure until
you feel the tube snap in. To release, press in on the front ring, while pulling the tubing out.
ALWAYS
use a gasoline-compatible stopper. Silicon stoppers swell and leak.
Check your fuel filters every ten (10) flights. You may be surprised how rapidly they can
clog up! The filter is installed with the
O-ring located toward the fuel pump
.
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Extremely Important:
Use caution not to pinch o-ring when assembling filters.
Clean any aluminum dust off and
lubricate threads before assembling.
We recommend mounting the fuel filter vertically. This will limit the possibility of air
being trapped inside and then coming out at an inopportune time. It is also better not
to affix it but to leave it free to slightly move.
When running the engine at full power, check the fuel line from the pump to the engine. If
there is a large quantity of air bubbles flowing with the fuel, there is probably a restriction in
the fuel system or an air leak in a fitting.
Be careful not to over-pressurize the kerosene tanks and the kerosene shut off valve during
refueling operations. You might pump a bit of raw fuel past the valve and into the turbine,
and subsequently have a wet (hot!) start. We are now requiring a manual
shutoff valve downstream of the automatic kerosene shutoff valve, as an additional
precaution.
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