Controller and other electrical componenDrive train Control wiringBatteries mounted
OwnerCharles Chipman
LocationMonticello, Kentucky United States map
Web/EmailWebPage email image
Vehicle1979 Kawasaki KZ650
Classic street bike
MotorMars ME0708 Permanent Magnet DC
DrivetrainChain drive, 6-1 ratio, 72 tooth driven
sprocket, 12 tooth drive sprocket. Converted
drive chain to #40 in order to keep rear
sprocket smaller diameter and to have more ratio
ControllerSevcon Millipak 4Q
48 volt, 325 amp with regenerative braking
Batteries4 Amstron - AP12-75D, 12.00 Volt, Lead-Acid, AGM
12 volt, 75 amphour, deep cycle
System Voltage48 Volts
ChargerSoneil SON4812SR
48 volt, 6 amp, on board
HeaterNone, it's a motorcycle
DC/DC Converter
48 volt - 12 volt, 18 amp
InstrumentationStock front wheel driven speedometer, 0-500amp
ammeter, LED voltage indicator
Top Speed48 MPH (77 KPH)
Will do 48, but likes 35 much better.
AccelerationNot tested, but pretty good on level ground.
Range33 Miles (53 Kilometers)
I'v done 33 miles both times that I've ridden it
until I could notice a drop in performance.
Watt Hours/Mile122 Wh/Mile
EV Miles
Start:45,203 Miles (72,731 Kilometers)
Current:45,426 Miles (73,090 Kilometers)
Total:223 Miles (358 Kilometers)
    As of 3/16/2019
Seating Capacity2 adults
Curb Weight0
About 100 lbs. heavier than stock bike.
TiresRear - 110/90-18, Front - 90/90-19
Conversion TimeMarch through June 2011
Conversion Cost$2500
Additional FeaturesRegen braking is controlled by the former clutch lever. The more you
pull it the more braking/regen. Added reverse because of it's
weight, it was hard to push backward in my gravel driveway. See my
build blog at WebPage

And my YouTube video at

code by jerry