Right side close3/4  shot rear48 volt side of fuel tank and instrumentright sideLeft closeup
OwnerRichard Miller
LocationWorth, Illinois United States map
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Vehicle1977 Kawasaki F9 350 cc 2 stroke rotary valve
Dirt bike, Worn out rotary valve, broken first gear, foul 2 stroke engine. Just plain tired.
MotorBriggs and Stratton Etek Permanent Magnet DC
pancake motor
DrivetrainTiming belt primary to Kawi 4 speed to chain.
ControllerSevcon Millipak 4QPM
4 Quadrant permanent magnet motor controller, fully programmable.
Batteries4 Hawker Genesis, 12.00 Volt, Lead-Acid, AGM
(4)13 Amp Hour Hawkers and (12) 8 Amp hour Universal UPS batteries.
System Voltage48 Volts
15 Amp variac home built
DC/DC Converter
Accessory battery
InstrumentationStock speedo. LCD Current and Pack Voltage.
Top Speed55 MPH (88 KPH)
55 after recent rear sproket change.
AccelerationAbout like a quick 125cc bike with the current limited to 300 Amps.
Range16 Miles (25 Kilometers)
Maybe some Lithium later.
EV Miles
Start:3,674 Miles (5,911 Kilometers)
Current:3,800 Miles (6,114 Kilometers)
Total:126 Miles (202 Kilometers)
    As of 12/10/2007
Seating Capacity2 adults
Curb Weight0
Estimated at 275 to 300 lbs max.
TiresDirt, Knobby
Conversion Time3 years working sporadically. Ongoing educational project. I should learn enough to build something really good.
Conversion CostApprox $1300
Additional FeaturesReverse, Regen on foot brake, fully programmable controller, Digital Pack monitoring. 4 speed trans is what is left of broken 5 speed. The jug and clutch were removed and the trans was sealed (leaks like a britbike now)
New for 07, stretched out the front of the frame basket to include more batteries. (will fit a 90Ah Thundersky pack). Still OK for the trails but getting a little porky. Had to turn the controller sideways for more rear tire suspension movement clearance. The Hybrid pack is supposed to use the stiffer Hawkers for power and the UPS batteries for capacity. They were also free.

code by jerry