The MotorThe Trunk
OwnerTim Catellier
LocationChandler, Arizona US map
Web/EmailWebPage email image
Vehicle2000 BMW Z3
MotorNetgain WarP 11 Series Wound DC
Drivetrain5 Speed Manual
ControllerCafe Electric Z1K-HV
Zilla with Hall Effect Pedal Option
Batteries48 Skyenergy 120AH, 3.30 Volt, Lithium-Ion
System Voltage160 Volts
ChargerManzanita Micro PFC-20 w/ Buck enhancement
Wish I'd added the meter option. Great charger though.
Heater1500 Watt Ceramic Heater
DC/DC ConverterIota DLS-55
Two wired in parallel along with a SLI backup battery. The power steering pump can draw up to 85 amps on a hard turn, so one Iota wouldn't cut it.
InstrumentationXantrex Link 10
Top Speed80 MPH (128 KPH)
There was still some throttle left, and the car was pulling nicely. I need somewhere I can really test it.
Acceleration0-40 mph is much faster than stock, but then acceleration tapers off. 0-60 is about 11 seconds.
Range62 Miles (99 Kilometers)
In the interest of maximizing the life of the batteries, I'll be limiting my trips to 50 miles or less.
Watt Hours/Mile320 Wh/Mile
This is in average stop and go traffic. I have seen results as good as 280 Watt/hours per mile.
EV Miles
Start:134,214 Miles (215,950 Kilometers)
Current:135,215 Miles (217,560 Kilometers)
Total:1,001 Miles (1,610 Kilometers)
 
    As of 8/16/2010
Seating Capacity2 adults
Curb Weight3,285 Pounds (1,493 Kilograms)
Stock was 2900 Lbs.
Tires225/50 R16 Bridgestones that came on the car. Will look into LRR tires when time comes to replace these.
Conversion TimeFrom engine pull to out of the garage was 1 year and 3 weeks. There were about 5 months spent idle waiting on various parts. All in all I'd estimate between 550 and 600 hours of work.
Conversion CostCar - $7,600
Conversion - $21,500
Additional FeaturesI'm using a Toyota MR2 power steering pump wired to a proximity switch. The pump stays off in straight line driving, but comes on with a slight turn and stays on until the wheels are pointed straight for 10 seconds.

code by jerry