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Operation
If you are inexperienced with turbojet engines, it is recommended to install the engine on a
stable test platform, and perform a number of start-up operations to get used to and check
the equipment, turbojet engine, fuel circuit, fuel filter, anti-bubble tank. When happy, then
transfer to the model aircraft. This allows you to perform operations in a secure environment
and become familiar with the engine’s performance.
For the first start or any time the fuel tube to the engine is empty, use the “TEST PUMP”
function within the “TEST” menu on the GSU to prime the fuel lines up to the engine (see
part 6.1 of GSU section).
Warning: disconnect the fuel line from the engine and collect the fuel in a container.
Do not flood fuel into the engine or a “hot start” can occur with flames coming from
the exhaust.
Use the GSU to “teach” the ECU the radio signal from your system (See part 2 of the GSU
section).
Futaba remote control must be set to reverse throttle signal, JR & Spektrum throttle normal.
To start the engine:
1. Set trim to low, throttle to low.
2. Power up Tx then Rx.
3. Set trim to high.
4. Push throttle to high, then return to idle.
When the throttle is high, the starter motor will turn, then return the throttle to the minimum.
At this time, the engine will automatically enter the ignition starting procedure.
Once the engine has stabilised, the GSU will display “Running” and you will have throttle
control over the engine.
To Stop the engine, place throttle stick to low and trim to low. The engine will stop, and the
starter motor will turn the engine to cool it down below 80 C. This is to protect the bearings
from excessive heat soak. The cooldown sequence will stop automatically and may take a
couple minutes. Do not switch off the Rx until the cooldown sequence is finished.
If the trim is in the minimum position and the throttle stick is pushed the maximum, the motor
will also rotate, but the throttle will not enter the start sequence when the throttle is at
minimum. This feature can be used to manually cool the engine or clear excess fuel from
the engine if it becomes flooded.
