2009-Mar-14-statuschargingunder the hoodmy co-workerdrivetrainbattery packinstrument panelAzure WaveformsccShell-3 in Linux
OwnerDave Hale
LocationSunland, California US map
Email email image
Vehicle1972 Porsche 914
Purchased running from craigslist for $2000 (factoring in the
$500 I got for the engine), with the intention of converting to
MotorAzure Dynamics/Solectria AC24LS 3-Phase AC
DrivetrainNewly rebuilt 5 speed manual transmission (upgrade to side-
shifter) coupled through stock clutch & lightened flywheel to
electric motor.
ControllerAzure Dynamics/Solectria DMOC 455 II
Batteries18 US Battery 8VGCXC, 8.00 Volt, Lead-Acid, Flooded
170Ah, 64.5lb each. Total battery cost was $2k.
System Voltage144 Volts
ChargerZivan NG3
110VAC input. Modified with HI-LO switch so that it would
work on a standard 15A circuit (otherwise it would require a
special outlet as it pulls 23A).
Heatertwo hairdryers (in parallel)
DC/DC ConverterIota 501-DLS-110-55-K
55A 109-190VDC to 12VDC
Instrumentation* 0-100% "SOC" (just a pack voltmeter)
* 6-16V Aux Battery Volts
* +/- 200A AMPS
* New electronic speedometer from NH Speedo
* Refurb orig tach
* 7 inch touchscreen for in-dash computer
Top Speed70 MPH (112 KPH)
Accelerationmeasured times on flat ground:
0-30 : 12 sec
0-60 : 46 sec
Range35 Miles (56 Kilometers)
(when the batteries were new)
This is the "safe" range. I sometimes made 60-70 mi trips but
this undoubtedly contributed to the early demise of my first
traction pack.
Watt Hours/Mile350 Wh/Mile
running average, plug-to-wheels...measured power out of
the wall with Kill-A-Watt meter, to factor in charger
efficiency, after mixed driving.
EV Miles
Current:12,450 Miles (20,032 Kilometers)
Seating Capacity2 adults
Curb Weight3,060 Pounds (1,390 Kilograms)
actual, weighed at certified scales
TiresMichelin Energy Saver A/S, Low Rolling Reistance
195/60R15 87T SL Green X
Conversion Time3 mo of evenings (maybe 200-300 hours??) Removed engine
on 2/1/09; started driving it on 4/30/09.
Conversion Costabout $20k including donor vehicle, conversion kit, and
batteries (not including some extra, optional work)
Additional Features* Regenerative braking
* PakTrakr battery monitor (failed)
* New dash instrument cluster
* Modified (light weight) flywheel
* In-dash computer controls Satellite Radio, MP3s, GPS nav
Other, non-EV-specific work I did to the car:

* Added beefier torsion bars, KYB front shocks, and KYB rear suspension
* Porsche 911 turbo tie rods
* New ball joints, CV joints
* POR-15 for cargo and engine compartments
* Elephant Racing PolyBronze suspension bearings (front control arms)
* Newly rebuilt later-model side-shifter transaxle
* Modified (lightened) flywheel

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