|Location||Portland, Oregon US map|
|Vehicle||1998 TWIKE III Active|
|Motor||Landert Custom Induction 3-Phase AC|
3kW continuous / 5kW peak (6.7 horsepower)
|Drivetrain||direct drive with differential gear|
|Controller|| 336 V, 20Amp with regen (programmable)|
Based on TB Woods E-TRAC WFC2000 AC
Inverter with factory mods for battery
charging and driving car.
|Batteries||2 Sanyo CP-3600CR, 336.00 Volt, Nickel-Cadmium, Sealed/Dry|
Replaced cells (May 2011) with SANYO
3.6Ah C sized cells. Total capacity is
now 7.2 Ah.
(description below is original pack):
280 C sized cells per pack (Panasonic
P280CR cells), 2
packs (5.6 Ah when new, estimated at
4 Ah now). Cells are tab welded into
groups of 20 cells (14 groups). Each
group is temperature monitored and each
2 groups is voltage monitored.
|System Voltage||336 Volts|
|Charger|| Built into controller|
Voltage and current limits settable via
keypad (435V and 5A/10A defaults for
firmware). Waits for batteries to be
below 30C temperature (runs fans), then
does CC until voltage limit hit, then
till 7 degree temp rise/min, then 1
of balancing charge, ending with a
trickle charge. Quick charge avoids
cooling and can charge with batteries
hot as 40C, charges at 10A rate by
default, terminates at 3C temperature
rise, and skips the balance phase.
|Instrumentation||Speedo led based, low battery light, 2 x |
16 backlight LCD display for various speed
and battery parameters. Display
selectable while driving.
|Top Speed||53 MPH (85 KPH)|
Limited by controller.
|Acceleration||0 to 40 in 9 seconds.|
|Range||40 Miles (64 Kilometers)|
New batteries are estimated to reach about
40 miles of range.
15 to 20 was estimated w/ two 13 year old
batteries (most was about 15 in practice).
|Watt Hours/Mile||60 Wh/Mile |
|Seating Capacity||2 adults|
|Curb Weight||520 Pounds (236 Kilograms)|
This is the weight with batteries but no
|Tires||Pirelli ML 75 2.50-16 front and rear |
(replaced 10 year old original tires).
|Replacing broken BMS board and replacing all NiCd cells by |
spring 2011 (completed in May 2011). Should be back on the
road shortly. Replacing the 2.8Ah Panasonic cells with new
(but hard to find) 3.6Ah SANYO cells.