Duffy 21Duffy 21Duffy 21Duffy 21Duffy 21
OwnerKeith Mercill
Owner's Other EV1989 Ford Ranger
LocationHendersonville, Tennessee United States map
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Vehicle1994 Duffy 21 Old Town
21' Electric Boat
MotorGeneral Electric Compound Wound DC
Same 36 volt motor you would find in a
golf cart.
DrivetrainUsing a 5" motor pulley and a 9" drive
shaft pulley. V belt connects the two.
250 amp controller
Batteries6 Trojan T105, 6.00 Volt, Lead-Acid, Flooded
System Voltage36 Volts
ChargerSolar SP100 125x125x36
3 100 watt panels produce 6 amps on a
sunny day. Panels are mono crystalline and cost $189.00 each. Charge controller is from Solar Converters Inc. 5 amp @ 36 volt
DC/DC Converter None
Using two of the traction batteries for radio, GPS, lights and gauges.
Instrumentation1) 10 amp meter. 1) 100 amp meter. 1)50 volt meter. 1)36 volt meter. 1) GPS.
Top Speed6 MPH ( 9 KPH)
Motor draws 75 amps @ 6 mph and 20 amps @ 4 mph. Used GPS for these figures
Range36 Miles (57 Kilometers)
Boat will run about 9 hours with no sun at 4 mph.
EV Miles
Current: Miles (0 Kilometers)
    As of 9/19/2012
Seating Capacity12 Adults
Curb Weight3,300 Pounds (1,499 Kilograms)
Conversion Time3 months
Conversion Cost$4,000.00 Including boat.
Additional FeaturesAll the lights have been changed out to led's. The radio was changed out to a Boss SD, USB radio with no moving parts.
I found the boat on Craigslist in Austin Texas for $2,900.00. The batteries take about 1 day to charge back up from a days running on the lake. We use it at night for going out to dinner and just cruising. When it's not in use it sits in the slip with the sun charging the batteries. The best part is no gas, oil, filters or impellers.

code by jerry