Motor compartment without front batteryMotor commutatorFront motor compartment.Frontal view with the tree
OwnerMarkus
LocationDettenhausen, Baden-Wurttemberg Germany map
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Vehicle1996 ZAZ Tavria
This is a 1996 ZAZ Tavria. Body built in the Ukraine with originally a 4 cyl. ICE by Autozaz and then converted to electric in Dresden, Germany by Fridez Solar AG.
Motor MFNC 112.1 Series Wound DC
84V 174A 12kw (S2 60min)
with interpoles
56kg about 8" in diameter
3 temp sensors (130, 170 and 180 deg. C)
separate forced air cooling (12V fan)
DrivetrainA series-wound motor (about 8.1 inches) mounted to 5 speed manual transmission (1st and 5th gear locked out).
ControllerCurtis 1221R-1105 350A max
Batteries14 Varta 160 Ah, 6.00 Volt, Lead-Acid, Gel
System Voltage84 Volts
ChargerCelltron transformer with electronic control, 25A
Will charge with max. current (up to 25A) until preset voltage limit is reached, then reduce current by pulsing.
HeaterCeramic electric heater.
DC/DC Converter 13.6V 4A
two DC-DC, 13.6V 4A each
InstrumentationAmmeter and Voltmeter.
Has a 250A/60mv shunt.
Top Speed50 MPH (80 KPH)
Range50 Miles (80 Kilometers)
actual range is 30 miles (50km) with used gel batteries
Watt Hours/Mile323 Wh/Mile
After fixing wheel alignment issues I just did a 43km run with 8.7kwh measured at the wall plug, hence including charger inefficiencies. This corresponds to 323Wh/mile. The trip was a roundtrip, mostly highway including some longer hills that I had to climb. After another month of experimenting this turns out to be a typical number. I can go lower if I drive carefully (16 kwh for 100km is the best so far, done in a 54km trip, i.e. about 256Wh/mile) and if I do only short trips it may be higher due to charging inefficiencies.

Before wheel alignment I needed about 400 Whr/mi. (including charger and equalization inefficiency measured after doing a 15 mi trip including city, highway and hills).

If I simply use the (amps*volts) formula at 35mph then I get 100Whr/mi when going on a level street.
Seating Capacity4 adults
Curb Weight2,580 Pounds (1,172 Kilograms)
Tires175/70 R13
Fulda EcoControl
running with 50psi (4.5 bar)
Conversion TimeTime to restore took me about 6 months on and off. There was a lot of welding involved in fixing rust issues on the body plus some wiring, break and suspension problems.
Conversion Costway too many hours in the garage

code by jerry