Washington Auto Show
OwnerBruce & Susan Lawton
LocationPurcellville, Virginia US map
Web/EmailWebPage email image
Vehicle1997 BMW Z3 Roadster
Primarily used for commuting, 66 miles round
trip.
MotorNetgain WarP 9 Series Wound DC
Drivetrain5 speed manual transmission without clutch.
ControllerEvnetics Soliton 1
Batteries72 Nissan Leaf, 4.10 Volt, Lithium-Ion
60 AH, paralleled for 120 AH.
System Voltage290 Volts
Charger 14.4
Accepts either 120V or 240V.
Heater1,500W ceramic heater from EVSource.com. It works
surprisingly well.
DC/DC ConverterBelktronix SN394
675 watts. Using a 60A ANL fuse on the output.
InstrumentationUsing original gauges and lights as much as
possible. Custom iPhone app for the rest.
Top Speed104 MPH (167 KPH)
Limited by settings, 5,500 RPM.
Acceleration0-60 MPH in 9.4 seconds
Range100 Miles (160 Kilometers)
Will measure later.
Watt Hours/Mile300 Wh/Mile
In winter, it's 270-326 WH/mile. The commute is
part highway, part stop-and-go traffic.
EV Miles
Start:144,000 Miles (231,696 Kilometers)
Current:160,000 Miles (257,440 Kilometers)
Total:16,000 Miles (25,744 Kilometers)
 
    As of 10/25/2015
Seating Capacity2 adults
Curb Weight3,140 Pounds (1,427 Kilograms)
Was 2700 lbs before. The batteries are 600 lbs.
TiresLRR: Continental Extreme Contact 225/50 ZR16
Conversion TimeJune - Oct 2011
Conversion CostAbout $30,000, including the donor and not including any tax
breaks.
Additional FeaturesSwitched to an Orion BMS, which is highly customizable.
Using an Arduino and iPod Touch to provide more interlocks and some
touch screen and instrumentation support. All exterior lighting is LED,
except the HID headlights.

code by jerry