Evolution Engines 62GXI - Manual (Page 9)

9
Connecting the System Wiring Harness Assembly
The battery voltage required is 8.4V (2S Li-Po battery). Do not use a voltage regulator.
We recommend a 2S Li-Po battery (such as the Spektrum Li-Po Receiver Pack 2000mAh
(SPMB2000LP)) as we have done extensive testing with this pack. The maximum current draw at
full throttle is 650mA, and our more typical average has been between 300–350mA.
The assembly consists of:
• Ignition module with battery connector, ignition sensor connector, tachometer readout
connector and spark plug connector
• Ignition sensor (already attached to your engine)
• Sensor magnet (already installed in the prop drive hub of your engine)
• EFI (Electronic Fuel Injection) module, wiring harness with power and RPM pickup connectors
• Switch to power EFI and ignition module (not included)
• 2S Li-Po battery (not included)
Mounting Your Electronic Ignition
• You can mount the unit in any orientation
and place that is convenient for your
installation. You can also mount it to
the firewall or under the engine firewall
extension if your airplane is so equipped.
Keep in mind that it should be mounted
away from the heat of the muffler.
• Secure the ignition module to your chosen
location with foam padding to provide
vibration isolation. We typically mount it
conveniently with tie wraps after wrapping
the ignition in lightweight 1/4-inch foam
rubber. You can also use the mounting ears
on the ignition to secure it to your aircraft
using screws.
• You may need to route both the spark plug
connector wire and the ignition sensor wire
through the firewall, so be sure to plan
ahead and provide adequately sized holes
that will allow you to pull either the ignition
sensor connector or the spark plug cap
connector through the holes for later ignition
removal.
• Mount a good quality radio receiver type
switch (EVOA112) between the EFI/ignition
unit and the battery. Mount this switch in a
convenient place on the outer fuselage close
to the front of the airplane to make it easy
to turn the system on and off. Being able to
easily shut off the engine power supply is an
important safety consideration.
• The input side of this switch should be
connected to your battery used for the
engine power system. The output side of
this switch should connect directly to the EFI
wiring harness labeled “Power”.
• Connect the ignition sensor wire to the
ignition module. The sensor wire will only
fit into one of the connectors so you cannot
connect it wrong.
• Connect the ignition module tachometer
output to the EFI wiring harness connector
labeled “Tach in”.
• Connect the red power lead from the ignition
module into the wiring harness lead labeled
“Ign Power”.
• For added security and controllability, add
an additional radio-operated kill switch
(such as the Optical Ignition Kill Switch
EVOA100) between the engine system
battery and the input side of the ON/OFF
switch.
• If desired, you can connect either the
separately available tachometer readout or
the included Evolution/Spektrum Telemetry
Adapter Cable (EVOA107) to the connector
labeled “Telemetry” on the EFI wiring
harness. Plug the other end of the adapter
cable into the Spektrum telemetry module’s
rpm input port.
• Connect the spark plug connector to the
spark plug. This spark plug connector
utilizes a locking snap ring to ensure a solid
connection. Push it straight onto the spark
plug to secure.
• Make sure you charge your ignition battery.
You are now ready to operate your electronic
fuel injection equipped engine.