| Owner | Dave Hale | ||
|---|---|---|---|
| Location | Sunland, California US map | ||
| Web/Email | WebPage | ||
| Vehicle | 1972 Porsche 914 Purchased running from craigslist for $2000 (factoring in the $500 I got for the engine), with the intention of converting to electric. | ||
| Motor | Azure Dynamics/Solectria AC24LS 3-Phase AC This slightly newer model was supposed to have higher torque/lower efficiency than its predecessor, but has been measured to have much less torque than spec'd. Motor vibrates and is not usable above 4000 RPM. | ||
| Drivetrain | Newly rebuilt 5 speed manual transmission (upgrade to side- shifter) coupled through stock clutch & lightened flywheel to electric motor. | ||
| Controller | Azure Dynamics/Solectria DMOC 455 II Appears to be faulty, as it cannot produce simultaneous drive on all three phases (see image of waveforms). | ||
| Batteries | 18 US Battery 8VGCXC, 8.00 Volt, Lead-Acid, Flooded 170Ah, 64.5lb each. Total battery cost was $2k. | ||
| System Voltage | 144 Volts | ||
| Charger | Zivan 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). | ||
| Heater | none | ||
| DC/DC Converter | None currently I had a CC Power unit which failed. EA replaced it. Second one failed (mid Sept'09) and am currently awaiting replacement. | ||
| Instrumentation | * 0-100% "range" capacity (just a pack voltmeter) * 6-16V Aux Battery Volts * +/- 200A AMPS * Battery Monitor (PakTrakr) * New electronic speedometer from NH Speedo * Refurb orig tach | ||
| Top Speed | 50 MPH (80 KPH) on flat ground. much slower with any grade at all. | ||
| Acceleration | 0-25 : 30 sec 0-50 : 90 sec (on flat ground) | ||
| Range | 60 Miles (96 Kilometers) ACTUAL; measured until it stopped (and then limped home the last few miles). Routine range should be kept under this, so my practical useful range is about 40 miles with Regen. | ||
| Watt Hours/Mile | 400 Wh/Mile measured power out of the wall with Kill-A-Watt meter, to factor in charger efficiency, after mixed driving (few mi freeway, mostly surface streets--this after the 60 mi range test). This was done with the old orig Himax 165R15 tires and should be remeasured now with the new LRR Michelins. | ||
| EV Miles |
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| Seating Capacity | 2 adults | ||
| Curb Weight | 3,060 Pounds (1,390 Kilograms) actual, weighed at certified scales | ||
| Tires | Michelin Energy Saver A/S, Low Rolling Reistance 195/60R15 87T SL Green X WebPage | ||
| Conversion Time | 3 mo of evenings (maybe 200-300 hours??) Removed engine on Feb 1; started driving it on Apr 30. | ||
| Conversion Cost | about $20k including donor vehicle, conversion kit, and batteries | ||
| Additional Features | * Regenerative braking * PakTrakr battery monitor * New dash instrument cluster * Modified (light weight) flywheel | ||
| This is the Voltsposche AC Kit from Electro Automotive. -- 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 * POR-15 for cargo and engine compartments * Elephant Racing PolyBronze suspension bearings (front control arms) * Newly rebuilt later-model side-shifter transaxle * Modified flywheel -- | |||
1972 Porsche 914
Last Updated 11-12-2009
Copyright © 1997-2009 by Mike Chancey