Soda blasted and epoxy coatedHighway Yellow 52UGalaxy Tab II 10"1899 Lohner-Porsche Mixte HybridCurtis 1238-7601 Controller in placeKoolance Cooling System for Curtis ContrAC50 and 914 transaxle coupledAC50 motor with custom fabricated mountZivan NG1 DC/DC Converter and Auxiliary
OwnerMark C Brems
LocationLos Angeles, California United States map
Web/EmailWebPage email image
Vehicle1974 Porsche 914 1.8L (formerly)
Purchased glider on eBay for $1250
MotorHPEVS HPEV AC50 Motor 3-Phase AC
HPEVS 50HP motor manufactured by High
Performance Electric Vehicle Systems
DrivetrainOriginal Porsche manual 5-speed transaxle.
ControllerCurtis Curtis 1238-7601 650amp Controller
This is the new controller which delivers
100 amps more than the prior model, and 15-
18% more power when married to the AC-50.
Batteries36 CALB/Skyenergy CALB LFP180AHA - 180 Amp Hours, 3.20 Volt, Lithium Iron Phosphate
Sky Energy is now known as CALB (China
Aviation Lithium Battery Company).
System Voltage120 Volts
ChargerElcon PFC 2500
Input - 115/230 VAC
Output - 96-136 VDC
13A/22A Amps
HeaterCeramic core in auxiliary blower mounted
under OEM fresh air blower in gas tank
compartment. Purchased from Canadian
Electric Vehicles.
DC/DC ConverterZivan NG-1 50 Amp
100-200 VDC
50 Amp
InstrumentationGalaxy Tab II 10" touch screen tablet
mounted in center console, running Torque
Pro for Android. OBD data streaming from
Orion BMS.
Top Speed96 MPH (154 KPH)
Proven. It still has more to deliver, but I
have not found the perfect stretch of
highway to test it out yet.
Range70 Miles (112 Kilometers)
115.2 Volts x 180Ah = 20.736 KWh x ~4
miles/KWh = 82.9 miles (approximate)

70 miles max real world.

(Wally Rippel taught me this equation.)

Without discharging the pack under 20%
SOC, the practical range is about 70
EV Miles
Current:7,200 Miles (11,584 Kilometers)
Seating Capacity2 EV enthusiasts
Curb Weight2,360 Pounds (1,072 Kilograms)
Original factory curb weight = 2094 lbs

Subtract 532 lbs (gas engine, starter,
fuel tank, FLA battery)

Add 798 lbs (AC motor, adapter, LiFePO4
batteries, racks, charger, DC-DC
converter, controller, etc.)
Conversion Time2 years 9 months. Most of the time went into
the restoration before the conversion
Conversion CostConversion cost approximately
$18,000 (Restoration not included)
Additional FeaturesFlywheel lightened from 17 lbs to 11 lbs by RIMCO.
All dash and running light bulbs converted to LED.
Headlights converted to HID BiXenon.
New fusebox with blade fuses from J-West Engineering.
Orion BMS from Ewert Energy Systems feeding ODB data through a
CANbus adapter to Galaxy Tab II tablet via Bluetooth.
Body trim and weather seals have been installed, and restore
is done. AC50 motor is mated to the Porsche transaxle, and
installed in car. Battery racks have been designed,
fabricated and mounted. 36 CALB LiFePO4 batteries have been
purchased, received and installed. All EV components have
been configured and installed - controller, cooling system,
charger, ceramic heater and fan, DC/DC converter, auxiliary
battery, and emergency disconnect. All of the batteries have
been fit into the engine bay and gas tank compartment, and
entire rear trunk and 90% of original front trunk space was
All batteries have been strapped together and connected, and
Orion BMS has been installed. Orion top-balances pack every
charge cycle by slightly draining individual cells that are
at their charge limit, and cycling the charger until all
cells have reached their target SOC.

code by jerry