MotorControl SystemInstrumentationChargersRear battery packWiring SchematicTachometer Sensor
OwnerJames Voth
LocationSurrey, British Columbia Canada map
Web/EmailWebPage email image
Vehicle1992 Mazda MX-3
A low budget commuter/runabout
MotorBaker Series Wound DC
Forklift hydraulic pump motor
Reversed and timed for correct rotation
110 lbs, 8" dia X 13" long
Drivetrain5-speed gearbox, clutch removed
ControllerAlltrax AXE7245
Fan cooled
Batteries12, 12.00 Volt, Lead-Acid, AGM
Paccar/TRP BA27D51 AGM batteries
They are a rebadged Deka 8A27M
Six groups of parallel pairs to achieve 72V
92Ah*2*72=13.2kWh
System Voltage72 Volts
Charger eCity 240W
Six 12V, 10A PWM chargers purchased from
BMSBattery.com
14.7V max, 13.7V float
They keep my AGM batteries perfectly
balanced
HeaterHeating coils from a blowdryer installed
into heater fan ducting, powered by full
pack voltage
9A X 75V = 675W
Preheat with a 120VAC heater on a timer
DC/DC Converter Group 31 Battery
Charged by a 2A smart charger
InstrumentationSystem volt meter
Individual battery monitoring meter with
selector switch
Top Speed60 MPH (96 KPH)
AccelerationKeeps up with traffic. I haven't been
honked at yet!
0-30 MPH: 12 sec
0-40 MPH: 22 sec
0-50 MPH: 35 sec
0-60 MPH: 55 sec
Range25 Miles (40 Kilometers)
Estimate. No chance to test the range yet
Do I really want to?
Watt Hours/Mile455 Wh/Mile
Measured at the wall
EV Miles
Start:174,807 Miles (281,264 Kilometers)
Current:177,252 Miles (285,198 Kilometers)
Total:2,445 Miles (3,934 Kilometers)
 
    As of 5/17/2014
Seating CapacityTwo
Curb Weight3,200 Pounds (1,454 Kilograms)
Estimate
TiresStock 185/65R14
Inflated to 45 psi
Conversion Time49 days
Conversion Cost$3800 including the car
Oct 19, 2012 - Started commuting.
Nov 23, 2012 - New AGM batteries installed
Wow did they ever make a power difference!
Nov 29, 2012 - PWM field controller installed
Dec 04, 2012 - Kelly charger installed
Dec 23, 2012 - Kelly charger removed due to severe battery
balancing issues
Too much variance in battery internal resistances
Six chargers reinstalled
Jan 10, 2013 - eCity chargers installed
Mar 01, 2013 - 2A smart charger installed on accessory
battery
May 23, 2013 - Top speed run: 60 MPH
Sep 20, 2013 - Replaced 7" sepex motor with 8" series wound
motor,
Added a better battery monitoring system (@ 283,507 KM)

electric-booger.blogspot.ca
www.ecomodder.com/forum/showthread.php/project-electric-
booger-
budget-ev-conversion-92-mazda-22478.html

code by jerry