OwnerG. Mathews
LocationWalla Walla, Washington United States map
Web/EmailWebPage email image
Vehicle2008 Electric Bobber
MotorMars ETEK-R Permanent Magnet DC
capable of 72vdc, I did not use regen.
Drivetrain#530 Chain, Harley Davidson 51 tooth rear sprocket, 10
tooth
(#50 chain) front sprocket. Ratio is 5.1 to 1
ControllerAlltrax 7245
Can handle between 24 and 72vdc, up to 450 amps.
Batteries5 Optima Yellow Top D34/78, 12.00 Volt, Lead-Acid, AGM
55 AH, 43 lbs ea.
System Voltage60 Volts
ChargerSoneil 1206S
There are 5 onboard chargers, one charger per battery.
I'm
firm believer in the one charger per battery setup as the
batteries seem to finish charging starting at the center of
the battery pack and working towards the positive side,
and
then the negative side of the battery pack finishes last.
This
tells me that the batteries need to be charged
independently of each other at 12v and not at a total of
60V all at once.
HeaterThe warm feeling of passing all those gas stations.
DC/DC ConverterQuda
The battery pack is tapped at 48v to run the converter. I
have
seen these ran at 60v but they didn't last long. They seem
dependable at 48v. Cost was $25.
InstrumentationSpeedometer
Top Speed52 MPH (83 KPH)
The bike really likes 30-40 mph the best. Perfect for my
small
town with its flat country.
AccelerationKeeps up with traffic well.
RangeHaven't tested the max distance yet.
EV Miles
Current:100 Miles (160 Kilometers)
Seating Capacity1 adult
Curb Weight530 Pounds (240 Kilograms)
TiresRear is a 19 inch Harley-Dyna front wheel converted to a
rear,
and the front is a Harley Springer 21 inch. Metzeler
Marathon
880 tires.
Conversion TimeBeen working on the electric version for 2 months in my
spare
time.
Conversion Cost$3000 for the conversion plus the cost of the original build
estimated at $2000 for a total of approx $5000.
Additional FeaturesThe front end is a stock Harley Davidson Springer, the frame is an aftermarket rigid
frame meant for a Harley V-Twin setup. Just before ordering the engine I found this
website and decided to go Green with this EV conversion. I have built 4 other Harley
clones with V-Twin engines. To charge this bike I've placed 8 feet of extension cord in
the fuel tank thats connected to the on board battery chargers.
My thanks to my wonderful wife and family who put up with my expensive hobby. My
thanks to those here on evalbum.com who have gracefully answered all my questions.
Thanks to my suppliers thunderstruck-ev.com, electricmotorsport.com,
kellycontroller.com, motobatteries.com, and of course ebay.com.

10/13/08 Finally got the State Patrol and the DMV to sign off on the bike. There really
wasnt any problems, just took forever to get it inspected by the State Patrol which you
had to make an appointment to get that done. Now on the road legally. :-))

5/1/09 Changed front end to a lighter Springer front end.

code by jerry