Quick Test?
If your intention was just to functional test the engine you can shut off now, lower the throttle to idle and
lower the trim to off, or switch your Throttle Cut switch to “off” to turn off the engine. The engine should
now go into cooldown mode. You may see a puff of smoke from the exhaust, this is normal (good) and
shows lubrication is reaching the gearbox. Same goes if you pick up your heli and tilt it nose down, lube
can run into the hot power turbine area and there is another puff of smoke. Again, normal don´t panic.
Flight power on ground
If you have enabled the rotor speed governor by setting a preset rotor speed governor rpm and you have
set the heli gear ratio and you plan to bring the heli rotor blades up to normal flight rpm WITHOUT
ADDING ANY ROTOR BLADE PITCH, you can gradually increase the power until the rotors reach the
governor preset rpm. The governor should then lock onto the preset rpm with a small surge of power and
the throttle stick will no longer have effect up or down until you reduce it back to the position equivalent
to about 130k.
TurboProp engine running
The power is enough to spin the prop up to its idle rpm of around 1000rpm. If exposed, you should see
the gearbox light flashing to indicate shaft rpm and if you have telemetry fitted it will show on the screen.
If there is no signal you will not be able to increase the throttle. If you have telemetry fitted you will see
gearbox rpm reading and if no gearbox rpm reading there will be a flashing error message.
If the gearbox rpm reading is working correctly it will be possible to gently increase the throttle and the
propeller speed will increase.
Control of engine power/rpm is now handed back to the transmitter and controlled by the position of the
throttle stick. Initially Increase/decrease the throttle slowly, verifying that the engine
accelerates/decelerates following the throttle command. Take special care and maintain a safe distance
from the rotating propeller.
Engine shut down procedure
To shut down the engine lower the trim and the stick. It is recommendable that before shutting down, let
the engine idle for around 20 seconds before carrying out the shutdown procedure.
After the shutdown the ECU will keep the starting motor running to cool the engine under 100ºc.
The receiver can be switched off before the cooling procedure is complete. ECU will keep going until
finished. The ECU will shutdown itself when the procedure is complete.
WHAT TO DO IN THE CASE OF AN EMERGENCY
During the start sequence the ECU will be in charge of everything, controlling temperature and RPM.
The only thing the user can do is to abort the sequence by lowering the trim in the case that something
abnormal (scraping noise, excessive flames in the exhaust, etc).
If a problem is detected, first: move the trim to the low position to abort the sequence.
If there is a fire in the engine and the problem is because the starter has failed or the engine is seized
(not turning),
IMMEDIATELY APPLY THE FIRE EXTINGUISHER
through the intake side of the engine,
never through the exhaust as it can blow any flame to inside the airframe.
If there is a fire, but the rotor remains free to spin and the starter is OK, raise the trim and stick to the full
power position for 3 seconds, this will connect the starter manually to ventilate the engine and extinguish
the fire.
The throttle channel acts as a starter switch as long as the engine has not reached idle.
If the engine had reached idle and stopped, lower the trim and the engine will go into cooldown mode.
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