Engiro motorRear cellsRear Battery BoxesChargers
OwnerDavid Iredale
LocationAugusta-Margaret River, Western Australia Australia map
Email email image
Vehicle2005 Mazda RX8
The original car was purchased in 2012 for the
conversion that was commenced in July 2014 and
was driveable in April 2016.
Motor ENGIRO 205 W 16023 3-Phase AC
3ph PMAC
MAX 119KW, 380nm, 8000rpm.
Water cooled
DrivetrainMotor drives through new flywheel & HD clutch to
the manual 6sp gearbox and std diff.
ControllerSevcon G4 S8
A Sevcon Gen4 Size8 controller to handle the
higher max voltage (398VDC) from
the 96 NCM cells.
Adjustable regeneration
Batteries96 NCM from Shenzhen Westart, 3.70 Volt,
Lithium Nickle Cobalt Manganese Cells
150Ah / 53KWh battery pack.
Cell 3.0V to 4.15V
24 cells under the bonnet, 24 over the rear
axle and 48 forward of the rear axle.
Battery boxes made by EV Power
Rod at EV Power designed the 'BatMon' BMS that
interfaces with the individual cell modules.
System Voltage355 Volts
Via a Type 2 socket, 3ph charging connection
supplying 3 X water cooled 6.6KW AC Ovartech
AODI chargers.
19.8KW AC, 18KW @ 60A DC @ 20A DC / charger.
DC amps are adjustable from 1A to 60A
Uses an AVC2.CE from Modular EV Power to
communicate with T2 charging stations
HeaterThe controller and motor heat the water that
goes through the cabin heater core, this is
sufficient to demist the windscreen in winter
in the SW of Australia.
DC/DC Converter Unknown
The electric power steering (EPS) is connected
directly to the DC/DC.
InstrumentationEV Power battery monitor 'BatMon' so I can view
the voltage of each cell.
Brake vacuum gauge.
Top SpeedThe Sevcon G4 S8 controller had tables loaded by
Tully at Electric Drive Engineering
https://electricdriveengineering.com.au/ so
performance is greatly improved.
Range175 Miles (281 Kilometers)
~280km at the maximum speed limit.
Watt Hours/Mile288 Wh/Mile
~185Wh/km at 100 ~ 110kph
EV Miles
Start:68,000 Miles (109,412 Kilometers)
Current:100,000 Miles (160,900 Kilometers)
Total:32,000 Miles (51,488 Kilometers)
Seating Capacity2 adults
The rear seats were removed to install 48
battery cells.
Curb Weight3,521 Pounds (1,600 Kilograms)
200kg heavier than the original ICE, it's now
about 1600kg and the balance is still around
Tires225/45 R18
Conversion TimeManhours??
From ICE to EV about 32 months.
The mechanical plus some of the electrical work
was carried out by myself and most of the
electrics by EV Power.
Conversion Cost>AUS$25,000
Additional FeaturesCVR rotary vacuum pump and a vacuum reservoir.
The original oil cooler is used as a radiator.
The original engine speed sensor has been fitted to line up on the
edge of the clutch to give a tacho signal to the ECU to energise the
SW Machining in Busselton made the flywheel and fitted the CanEV
gearbox adapter plate to the motor.
Rotomotion in Maddington WA manufactured then modified the motor
frame to fit the original 'Wankel' mountings and modified the
flywheel hub.
96 New NCM cells (150ah / 53kWh) fitted after 37,000km, the cells are
slightly smaller and lighter almost doubling the range.
New Engiro 16023 motor fitted at 146,786km, it's capable of 8000rpm -
that's closer to the original Wankel speed.
The Original motor was a 80KW Shenzhen Greatland
MP25L1 with controller CP7024L11 only did 5000rpm.

code by jerry