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Engine Installation: Electrical connections
The “X” Series engines are very simple to install but main thing to be very careful of is any cable
or battery connector which is not standard or has been modified in some way, as this can risk re-
verse connection of power supply which will easily destroy ECU and other components, so please
be extra vigilant before using junkbox cables and/or adapters.
It´s always best to use those supplied in the engine package which have been used in setting the
engine up for its factory tests.
Please don´t give in to temptation.
If you don´t have the recommended type battery, please
obtain one of the recommended types (2S LiPo or 3S LiFe, others are not supported). Do not risk
ruining your engine by trying to get it going by using a mains type power supply. Such a power
supply needs to be very smooth (regulated) and capable of very high peak current at the exact
recommended output voltage and such units are rare. A battery charger or similar will almost cer-
tainly be unregulated and have high voltage peaks which will destroy the components of the en-
gine, and such use invalidates your warranty.
Just order yourself a good, high quality battery of the recommended type and use the wait for it to
arrive by checking through your installation and these notes.
When it does arrive
please double check the polarity of the connector supplied before
plugging in.
A reverse polarity battery connection WILL destroy the ECU, Pump and engine compo-
nents.
The very briefest of puffs of smoke is all the notice you will get you have expensively
killed the ECU
Shared ECU battery
With small and light installations there may be the temptation to dispense with the receiver battery
and run the receiver using a regulator from the ECU battery.
This is an absolute No-No, strongly discouraged and is surely an incident/accident waiting to hap-
pen sooner than later.
The receiver needs to be able to power many servos at once and its supply voltage will vary con-
siderably as the servos are driven. It would be so easy for the varying supply to subsequently
cause what is known as a “brown-out”, a short dip in supply voltage that causes the ECU to sus-
pend operation or reset itself.
In either case it will shut off the engine, which is very bad news so please don´t do sharing the
battery, keep receiver and ECU powered securely and separately.
