OwnerPeter C. Thompson
LocationSan Diego, California United States map
Web/EmailWebPage email image
Vehicle1975 Porsche 914
Converted 914 using Electro Auto's AC914 kit. Midway through the
conversion, discovered that the lead acid batteries were not strong
enough for the motor, switched over the lithium. About the only
thing left from the kit is the battery racks - I'm switching over to a
BLDC 80kw motor.
Motorunknown GMP25L1 Brushless DC
Used to be the Azure Dynamics AC24. Now the Greatland Electric
Motor Company's GMP24L1 (80kw) motor.
DrivetrainStandard 914 transmission (completely rebuilt), with strengthened
suspension.
Controller GLCP7024L11
Gretland Electric Motor Company. Liquid cooled controller for BLDC
motor.
Batteries108 CALB/Skyenergy SE60AH, 3.40 Volt, Lithium Iron Phosphate
Monitored by mini-BMS from Clean Auto. No longer using Elithion
BMS, as it couldn't maintain SOC nor could it stop having
communication faults.
System Voltage370 Volts
ChargerManzanita Micro PFC-20
HeaterNone (yet - www.canev.com makes a good one).
DC/DC ConverterAzure Dynamics/Solectria DCDC 750
Older DC-DC converter producing 13.5 volts.
InstrumentationVoltmeters and ammeters for pack and aux battery.
Top Speed90 MPH (144 KPH)
Quite able to keep up with 70mph traffic.
Acceleration0-60 in roughly 11 seconds.
Range55 Miles (88 Kilometers)
55 miles at freeway speed (70 to 80mph). Longer range at city
speed.
Watt Hours/Mile350 Wh/Mile
Overall it got 320 whr/mile - but this also included some autocross-
style driving by my mechanic. "normal" driving reduced it to 310.
EV Miles
Start:40,040 Miles (64,424 Kilometers)
Current:51,000 Miles (82,059 Kilometers)
Total:10,960 Miles (17,634 Kilometers)
 
    As of 12/23/2016
Seating Capacity2 adult
Curb Weight2,260 Pounds (1,027 Kilograms)
Curb weight at the recycling center scale.
TiresStandard tires.
Conversion Time2 years and counting.
Conversion CostCar - $7k. Kit - $14k. Batteries, BMS, Charger - $15k. DC-DC
converter - $400. Transmission - $2.5k.
Total: $39k.
Additional FeaturesRenovated suspension. Rebuilt transmission.
Major learning experience.

For those just starting - get a much newer car. :)

Also, if you buy an air-cooled motor, make sure the motor controller can turn a fan on or off for
that motor.

Switching to BLDC liquid cooled motor and controller. Need to have better control over the heat
and power.

code by jerry