The Control SystemThe Motor and Battery PlacementFinal Drive
OwnerKevin Leach
Owner's Other EV1991 BMW 318i
LocationGeelong, Victoria Australia map
Email email image
Vehicle1986 Suzuki RG-250
MotorBriggs and Stratton E-Tek Permanent Magnet DC
Drivetrain15 tooth Pinion to 60 tooth rear cog
Direct drive
ControllerAlltrax 4844
48 Volt
400 Amp
Batteries4 36AH, 12.00 Volt, Lead-Acid, AGM
Deep Cycle AGM Golf Cart Battery
System Voltage48 Volts
ChargerPowertech MB-3614
24 Volt, 3-6Amp
2 Stage Charger
Was a bit low on charge voltage to begin with (26.8V) but found an adjustment POT so now happily charges to 28.5V 95% then 26.5V to 100% SOC
DC/DC ConverterQuda
32-48Volt in
12V 10Amp Out
InstrumentationCustom Made 35mm LED
Voltage and Current Meters
Original Speedo
Top Speed50 MPH (80 KPH)
AccelerationWould keep up with a 400cc bike
Range20 Miles (32 Kilometers)
Seating Capacity1 Adult
Curb Weight340 Pounds (154 Kilograms)
16" front
18" rear
Conversion TimeActual Build time approx. 6 Months Part Time
Built over 1.5 Years while testing EV concepts
Conversion CostAU$4,000
The generic AGM batteries have proven to be a good test platform for this conversion - Currently, I am pricing LiFeP batteries as a replacement, and increase system voltage to 72V.

code by jerry