TWIKE 434 at SynkromotiveTWIKE 434 charging in downtown Portland,TWIKE 434 at homeTWIKE 434 on the way homeTWIKE 434 on the way home
OwnerPhil Hochstetler
LocationPortland, Oregon US map
Web/EmailWebPage email image
Vehicle1998 TWIKE III Active
MotorLandert Custom Induction 3-Phase AC
3kW continuous / 5kW peak (6.7 horsepower)
Drivetraindirect drive with differential gear
Controller 336 V, 20Amp with regen (programmable)
Based on TB Woods's E-TRAC WFC2000. Manual found at WebPage
Batteries2 Panasonic P280CR, 336.00 Volt, Nickel-Cadmium, Sealed/Dry
280 C sized cells per battery, 2 batteries (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 Voltage336 Volts
Charger Built into controller
Voltage and current limits settable via keypad (435V and 5A/10A defaults for 5.1 firmware). Waits for batteries to be below 30C temperature (runs fans), then does CC until voltage limit hit, then CV till 7 degree temp rise per battery, then 1 hour of balancing charge, ending with a trickle charge.
Top Speed53 MPH (85 KPH)
Limited by controller.
Acceleration0 to 40 in 9 seconds.
Range20 Miles (32 Kilometers)
Estimated w/ two 10 year old batteries.
Watt Hours/Mile80 Wh/Mile
Estimated for now. Real measurements later when I do a daily repeatable commute.
EV Miles
Start:58 Miles (93 Kilometers)
Current:802 Miles (1,290 Kilometers)
Total:744 Miles (1,197 Kilometers)
 
    As of 8/27/2009
Seating Capacity2 adults
Curb Weight520 Pounds (236 Kilograms)
This is the weight with batteries but no passengers.
TiresPirelli ML 75 2.50-16 front and rear (replaced 10 year old original tires).

code by jerry