|Owner's Other EVs||1920 Milburn Light Electric Model 27L|
2011 THINK City
|Location||Portland, Oregon US map|
|Vehicle||1988 Sam McKinney barge cruiser |
26' wooden scow barge cruiser
Plywood, epoxy&glass construction
|Motor||Briggs and Stratton Etek Permanent Magnet DC|
8HP at 48 Volt; Capable of delivering 14HP
for short intervals
|Drivetrain||1980's 25HP 2-stroke M25B Tohatsu outboard |
long-shaft converted in 1993 to electric;
Standard outboard nom. 2:1 ratio.
with EZ-GO Inductive Throttle Sensor
|Batteries||10 other THINK Enerdel 3kwh, 12S4P (31 - 48v), 31.00 Volt, Lithium-Ion|
All 10 modules connected in parallel, for
nom. 700ah capacity, 42v, 30kwh
Each battery is composed of 2 Enerdel Vigor-
type 12S2P 42v/35ah modules and 2 Enerdel
RLEC BMS boards w/CAN interface.
|System Voltage||48 Volts|
|Charger|| Vicor Megapac 48v power supply|
Megapac loaded with up to 6 Modupac 48v/4a
modules. Multiple Megapacs can be
connected in parallel also...limit is the
power source---can only draw about 30amps
or so if using 2kw genset (1.6kw max
continuous) while underway. Shoreside,
limit is similar at about 1.8kw
|Heater||Olympian 3100 BTU catalytic propane heater|
|DC/DC Converter||General Electric Rated for 36v to 12v, still using it for 31-48v in|
30 Amp (36v rating) to 12 Volt
|Instrumentation||Xantrex Link10 E-meter with RS232|
|Top Speed||8 MPH (12 KPH)|
7kts at 48v/200a for short bursts...6kts max
continuous at about 5kw.
|Acceleration||quick enough...probably 0-6knots in 20-|
|Range||66 Miles (106 Kilometers)|
60 n-mi at 5kts, 12hrs w/2.5kw
|Watt Hours/Mile||480 Wh/Mile |
|Seating Capacity||16 adults|
|Curb Weight||4,000 Pounds (1,818 Kilograms)|
|Conversion Time||3-6mos operational, ongoing improvements for |
first 3years thru 2006. Conversion to
lithium ongoing over last 2 years.
|Conversion Cost||$3000 for electrification...not including |
the Honda genset. Big cost: boat slip rent.
Converting to lithium has cost about
|Additional Features||Honda EU2000i 1.6kw continuous ultraquiet genset used for long |
cruises (greater than 50mi). I have cruised 90miles round trip
with this unit up and down the Columbia river. Used approx.
9gallons of fuel on trip, for approx. 10miles/gallon fuel
efficiency at approx. 3.5 knots average. Since going with
lithium storage, won't need to bring the genset along unless
doing more than 55-mile run....