OwnerJoe Greenbaum
LocationReseda, California United States map
Email email image
Vehicle2007 Kona Dawg
Electric bicycle
Motor Brushless DC
BMC 48V 600W hub motoer
35Amp BMC
Batteries2 Headway 38120S, 48.00 Volt, Lithium-Ion
I purchase a 20Ah, 48V pack directly from headway. I took it apart and split it into 2 20Ah 24 packs that I mounted on each side of the top tube in series, for 20Ah 48V.
System Voltage48 Volts
Headway 48V 6A LIFE
DC/DC Converter
Top Speed32 MPH (51 KPH)
accelerates about as fast as a econo car
Range20 Miles (32 Kilometers)
The 20 mile range is based on 75% pack discharge with pedal start up to about 8mph to conserve energy and then motor only in city traffic.
Watt Hours/Mile30 Wh/Mile
EV Miles
Current:305 Miles (490 Kilometers)
    As of 9/21/2009
Seating Capacity1 adult
Curb Weight70 Pounds (31 Kilograms)
Conversion Timea couple of months working on it a little here and there.
Conversion Costused Kona $1000
Headway pack, BMS & charger direct from Headway ROC, $700
BMC rear hub motor & controller, $950
I have used this bike to commute to work 5 flat miles each way. It gets me to work in 14 minutes. My truck takes 13 minutes and is nowhere near as much fun. It takes about 6Ah out of the 20Ah battery round trip and the charger pulls about 350wh to recharge the pack.I pay $0.13 per KWH, so it cost less than a nickel to recharge the pack.

code by jerry