OwnerJon Balgley
LocationPortland, Oregon United States map
Email email image
Vehicle1985 Mazda RX-7 GSL-SE
(previous owner pictured)
MotorAdvanced DC 203-06-4001 Series Wound DC
Dual 8" motors(coupled end-to-end)
DrivetrainGear Vendors 0.76:1 overdrive (no
ControllerDC Power Systems DCP-1200 Raptor
Dual Raptors in a Master-Slave
configuration for the dual motors.
Batteries13 Optima D31T, 12.00 Volt, Lead-Acid, AGM
75Ah (pictures show previous battery pack)
System Voltage156 Volts
ChargerZivan NG-3 (onboard convenience charger)
HeaterCeramic core electric, sure puts out a lot
of heat, but draws a lot of power too.
DC/DC ConverterTodd PC-30
30 Amp -- pretty minimal -- with small
backup battery
InstrumentationE-meter and dual motor Amp meters
Top Speed105 MPH (168 KPH)
limited by gear ratio - still pulls nicely
passing a 100 mph...
(by previous owner)
Acceleration0 to 60 MPH in 5.9 seconds
(by previous owner)
Range15 Miles (24 Kilometers)
Batteries seem to be fading. Gets me to
work and back, 7 miles each way, charging
at work.
Previous owner said 38 miles at 60 mph
Watt Hours/Mile500 Wh/Mile
Ranges from 425-575 Whr/mi, during mixed
local/highway 7-mile commute. No worries
about going 65mph on the highway.
Seating Capacity2 adults
Curb Weight3,105 Pounds (1,411 Kilograms)
TiresNow running 195/60R14 Dunlop Direzza,
great for autocross, not so much for

Previously used 205/60R14 BFG for
street, 225/45 BFG Drag
Radials for the strip
Conversion TimePrevious owner said: about 1100 hours -
it's never really done!

And he was right!
Conversion CostPrevious owner stopped counting after
about $15k
Additional FeaturesIt was built with safety in mind

* Kilovac EV500 main contactor on battery +
* Albright SW200 contactor for each motor -
* Four Heinemann circuit breakers that can be triped
with a pull-cable by the driver.
* First Alert impact switch which disables motor power
in a collision.
* Big red panic button on console that, when pushed
disables the motor power.

* Now with power brakes!
Still in the middle of the pack at autocross! Converting to
lithium and losing 500 pounds of lead, someday, will make a
huge difference.

code by jerry