Parts placementAs of 4/09 with Agni motorWorking on the (3) on board chargersWhere to hide 6 AGM's!The Naked LookUpgraded to Agnimotor 2/09 Cycle Analyst
OwnerPhilip
Owner's Other EVs12 volt E-Pocket Bike
2005 Mongoose BMX
LocationHamilton, New Jersey US map
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Vehicle2003 Kawasaki Ninja EX250
Motor Agni Motor Model 95, reinforced for 6000 rpm Permanent Magnet DC
Very nice motor. 71 rpm/volt. 23 pounds. Cedric Lynch designed.
Drivetrain#40 chain running on 12 / 72 sprockets . Geared for 60 mph.
ControllerKelly KD724001
72 volt, 400 amp brushed motor controller with brake regeneration. Very smooth, reliable.
Batteries24 Skyenergy 40 AH, 3.60 Volt, Lead-Acid, AGM
Calb (skyenergey) prismatic LIFEPO4
System Voltage72 Volts
Charger (3) @ 24 Volts / 5 amps each.
(3) 24 volt 5 amp scooter smart chargers. They work very well, three automatic modes; bulk, equal and float.
Heaternone
DC/DC Converter ??
12v tapped off of 4th battery. With all LED lighting, current draw is only 1.6 amps.
InstrumentationCycle Analylst, high power model. Nice unit.
Top Speed60 MPH (96 KPH)
52mph with 10 tooth, 55mph with 11 and 60mph with 12 tooth.
AccelerationVery good, the Agnimotor keeps up no problem.
Range18 Miles (28 Kilometers)
I never go below 70 volts which gets me 28 miles. I could get over 30 if I baby it.
Watt Hours/Mile80 Wh/Mile
For every (1) hour I charge, I can ride (4) miles on average. Better performance in summer due to warm weather.
EV Miles
Start:1,000 Miles (1,609 Kilometers)
Current:2,600 Miles (4,183 Kilometers)
Total:1,600 Miles (2,574 Kilometers)
Seating Capacity2 adults
Curb Weight308 Pounds (140 Kilograms)
About the same as the gas version.
TiresStock at 38-40 psi
Conversion Time~80 hours so far.
Conversion CostBike was $1000, however I sold ex250 engine for $700. About $2k for motor, controller, batteries and accessories. Just over 2k total, I mean.....so far!
The Ninja 250 is a very good bike to convert. Light weight, good brakes and shocks, plentiful parts on ebay, fairing to hide everything. Waiting for PSI Lifepo4's to come down in price (like everyone else). A 72 volt, 50 ah pack would be very nice! 1/09 Changed the Mars 709 motor to the Agni #95 reinforced. 4/8/11 Changed out the AGM's for Calb Lifepo4's...lost 70lbs and doubled range.

code by jerry