OwnerSham Datta
LocationHillsboro, Oregon United States map
Email email image
Vehicle1997 Toyota 4Runner Limited
1997 Toyota 4Runner limited SUV converted to an
electric vehicle (3 phase AC Motor) with all
bells and whistles.
MotorAzure Dynamics/Solectria AC-90 3-Phase AC
This three phase Induction Motor has ample
power as it is designed to pull a 10k pounds
box truck or a delivery van.Peak shaft power is
100 kw,continuous shaft power is around
50 kw. I have climbed steepest hills of
Portland and pacific NW with no sweat.
DrivetrainChanged to Manual 5 speed transmission with
clutch, so that I can change gears if needed.
With this change the Limited Toyota SUV is
now a two (rare) wheel drive. It drives fine
with just gear shift lever set to 4th gear,
since AC motor startup torque is more than
enough. But I can change gears if I need to and
actually can accelerate to 60 miles 7-8
seconds. Transmission almost smokes in first
gear if I accelerate fast. AC-90 motor has
extreme torque
ControllerAzure Dynamics/Solectria DMOC 645
Controller and motor are air cooled.
Batteries100 CALB/Skyenergy 180FI, 320.00 Volt, Lithium Iron Phosphate
This is a 60 kw Battery pack when fully charged.
I usually use it between 95% - 10% SOC window.
(Batteries weighs 1250 lbs)
System Voltage320 Volts
ChargerElcon PFC 5000
5 kw CAN Bus controlled charger programmed to
370 volts max at 15Amp charging current (runs
off 240 volt AC supply)
Heater480 volt 3kw dual coil inline liquid heater with
a coolant pump connected to vehicle heater core.
DC/DC Converter TRC 600-12
TRC electronics 320 volt to 12 volt 53 amp
converter (air cooled).
InstrumentationHas SOC display and CAN Bus driven BMC to WiFi
data logger. Can view battery and vehicle status
on cloud service using any web browser.
Top Speed78 MPH (125 KPH)
I have Tested the vehicle at 78 mph. Probably
can do quite a bit more as I did not floor it.
(I have also not tuned the controller yet).
I did get a traffic ticket at 78mph to prove it.
will do more speed tests later.
AccelerationIf I drive it as manual, can accelerate to 60mph
in less than 7-8 seconds. But I usually, just
leave the gear shit in 4th gear.
Range145 Miles (233 Kilometers)
145 miles if I discharge it to 7% SOC and for
88% Depth Of Discharge (DOD), I get about 125
miles. I only charge it to 95%. Calculations
show it will probably give me 160 miles for full
100% charge.
Watt Hours/Mile370 Wh/Mile
Draws between 360-410 watt hours per mile
depending on hills and speed. In the coldest
winter (snowing), consumption has gone up to 520
watts per mile with heater and other creature
comforts turned on.
EV Miles
Start:123,346 Miles (198,463 Kilometers)
Current:173,742 Miles (279,550 Kilometers)
Total:50,396 Miles (81,087 Kilometers)
Seating Capacity5 adults
Curb Weight5,700 Pounds (2,590 Kilograms)
Beast weighs 5700 lbs total - as measured on
North planes Truckers Weigh Bridge. 2700 lbs
front and 3000 lbs rear.
TiresBridgestone 70R16
Conversion Time2013-2015. About 2 years (Yes. I did have a real
day job to pay for this).
Conversion CostAbout $40k (I have not confessed this grandiose
number to my lovely wife yet and yes, I am still
Additional FeaturesImplemented MR2 2002 Electrical steering pump to get power steering
working with custom pressure hose adapters. A baby can steer this
beast now.

I have also added after market seat warmers and steering wheel
heater. It is a limited edition 4Runner, remember. AC and more
instrumentation - will be added soon.
This is my second conversion. I have a ZAP Three wheeler that I
kitted up with Curtis AC controller and 3 phase AC motor before
taking the plunge on 4Runner conversion.

code by jerry