Engine BayMain Battery Box
OwnerChristopher Walkden
LocationSelbourne, Tasmania Australia map
Web/EmailWebPage email image
Vehicle1992 Subaru Brumby
4WD Subaru Brumby utility. The Brumby was sold as a "Brat" in some countries.
MotorKostov K10 Series Wound DC
Has an over temperature switch which I have wired into a handy warning light in the dash.
My estimate is that I should be able to get about 70kW from this motor.
DrivetrainOriginal 4WD gearbox with clutch
ControllerKelly KDH14100D
The first one blew up, but Kelly quickly replaced it under warranty.
Controller is mounted vertically on a 6mm thick piece of aluminium. There are spacers under the aluminium so that air can flow through underneath. Also two 12V fans are mounted on top of the controller.
Batteries48 CALB/Skyenergy SE130FI, 3.30 Volt,
Lithium FerroPhosphate (LFP)
Battery BMS is homemade. You can make your own by following the instructions on the Low Cost BMS page at sourceforge. (I'm not allowed to post a link here, so just search for it)
System Voltage156 Volts
Charger TC Charger TCCH-H175.2-12
This is a 2kW charger. It has a current limiting input which I have connected to my BMS.
I've also installed a Chennic 1kW charger which can be plugged into a second power point.
Heater12V Hairdryer for demsiting.
12V Heated seat cover.
150VDC Materflux Heatpump system. Takes heat from the motor, transfers it to a heat-exchanger to heat water. The water is circulated using a 12V pump through the original heater core. Performance is good if outside temp above 5 degrees C, poor if below that temp. Good for demisting - I have not used the hairdryer since installing the heat pump.
DC/DC Converter Chennic
2 x 35A converters
InstrumentationZeva Fuel Gauge Driver + shows "state of charge" using the fuel gauge. It also shows instantaneous current draw using an aftermarket tachometer that I bought for the purpose.
I also use the exsisting engine temperature gauge. I have a switch so that I can see the temperature of either the motor or the controller. I have glued thermistors onto the motor and controller.
Top Speed80 MPH (128 KPH)
This speed is readily attained. Might go faster under ideal conditions.
Acceleration1/8 mile in 12.377 seconds.
Range67 Miles (107 Kilometers)
My first range test, driving up and down our short road.
Watt Hours/Mile400 Wh/Mile
Can get better than this by driving slower, or worse by going up lots of hills!
EV Miles
Start:154,550 Miles (248,670 Kilometers)
Current:172,741 Miles (277,940 Kilometers)
Total:18,191 Miles (29,269 Kilometers)
Seating Capacity2 adults
Curb Weight2,755 Pounds (1,252 Kilograms)
Since it is a utility I could add extra weight without going over the manufacturer's limit.
TiresLow Rolling Resistance
Conversion Time18 months
Conversion Cost$20,000 Aus Dollars
Additional FeaturesBatteries are heated when plugged into the mains socket.

code by jerry