Page 31
Failsafe
Never fly with the failsafe set to “hold”
. It is strongly recommended that you setup your ra-
dio system with the correct failsafe settings. In many countries it is mandatory that the engine
stops in 2 seconds in the case of a failure of the radio link.
To program correctly the failsafe on your radio:
1) Adjust the travel of the throttle channel from -100% (stop position) to +100% (full power)
2) Adjust the ECU to your radio as described above.
3) Adjust the failsafe position of the throttle channel in your radio to -125%.
If all is correctly adjusted, the ECU will stop the engine immediately when receive the “STOP” sig-
nal (-100%), but if the signal received is Failsafe (-125%) the ECU will set Idle power during 2
seconds, and, if after these 2 seconds the Failsafe condition persists, will shut down the engine.
Once you have the radio programmed, check it by setting the throttle to any position, then switch-
ing off the transmitter; after two seconds the “failsafe” reading should be displayed.
There are many more parameters that can be modified in the ECU, but we have specifically pro-
grammed your ECU with the optimum settings and only made available those needed.
Further adjustment should not be required and can only be carried out by Xicoy Electronica SL or
your authorized dealer or service agent.
Preparing the engine for running
A suitable test stand should be made to hold the engine. A pair of sturdy timber rails securely fixed
to a base board will suffice. Use screws to hold together, don´t rely on a nailed assembly. The
engine can be secured to the rails using good quality woodscrews. Use at least 20mm/3/4” long
for the X45 and 25mm/1” for X90 and X120, to be sure the engine is properly secure.
A platform/table/workbench is required to clamp or fix the test stand onto. Make sure this can be
easily transported outside and weight enough to ensure it cannot be blown over by the thrust of
the engine. Set up the fuel tank, fuel pump, battery and display onto the baseboard, ideally se-
cured. Nothing should be fixed downstream of the engine.
Select a clear area for running – keep clear of areas with loose leaves, sand or other debris that
could be picked up or drawn towards the intake. Ensure the fuel tank is position well clear of the
exhaust area and secured. You and your helper and any spectators should stand at the front of
the engine, not to the side.
Important notes for kerostart engines.
PLEASE READ
The kerostart system used on this engine is a reliable and well tested system that produces very
smooth and trouble free starts. However, extra care and attention must be paid when starting a
kerostart engine.
Kerosene (or diesel) is liquid and if unburned, can pool inside the engine and stay there forever.
The engine can hold a big quantity of kerosene inside. This kerosene will be ignited on next suc-
cessful start-up and will be pushed to the exhaust as soon as the airflow inside the engine is suffi-
