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18 March 2018

It’s Electric!

This is one sweet 1995 Mercedes-Benz electric car conversion courtesy of Frank Dobbs and EValbum. Frank writes” I Drove the car 2 years as an ICE (internal combustion engine) and really enjoyed it. Wanted to find a donor Z4, but couldn’t find one with a bad engine. My engine was running fine, but when the catalyst started to clog I decided WTH – why not convert my own heavy sled instead” and listed the specifications as the following;
1995 Mercedes Benz E320 Cabriolet
Heavy for an EV, but I removed the folding top and
related hardware – and managed to shed 400 pounds!
Motor: Netgain WarP11 Series Wound DC
Bought used locally. Had been set up for racing – had been cooled with pumped ATF! Not any more. Had the fan impeller installed and will run a forced air kit.
Drivetrain
WarP11 mounted to MBZ 5spd OD trans. An automatic
transmission conversion to manual on top of the EV
conversion!
Controller: NetGain Controls WarP Drive Industrial
Upgraded to 260V/1400A. **Desperate for help here!** I’ve listened in on the CAN BUS and am NOT seeing any of the codes the literature lists. DTC # 3 & NO HELP from NGC. Not happy with them. Project has stopped.
Batteries: 82 Voltronics 160Ah, 3.30 Volt, Lithium Iron Phosphate
Again bought used locally. Bottom balancing complete. Capacity testing pending a cool prototype wireless BMS system!
System Voltage: 270 Volts
Charger: Manzanita Micro PFC-50
Upgraded with Digi-pot, digital display, and full J1772 protocol interface
Heater: None yet (it’s San Diego!)
DC/DC Converter: Meanwell HRP-600-12
Instrumentation: Fuel guage driver, true tachometer, plus tablet with Torque running or similar
Top Speed: 80 MPH (128 KPH)
The coupe reportedly has a Cd of 0.29 – but with no top who knows. Hopefully under 0.36 and not a total brick.
Acceleration: Probably better than the stock ICE 170HP L6. Weakest link might be the 160Ah cells.
Range: 40 Miles (64 Kilometers)
Estimated – assuming lead foot
Watt Hours/Mile: 400 Wh/Mile
EV Miles Start: 200 Miles (321 Kilometers)
Seating Capacity: 2 adults (back seat now houses half of traction pack)
Curb Weight: 4,100 Pounds (1,863 Kilograms)
Downright bariatric – but plenty of room for cells at least
Tires: P225/60R16 Pirelli P7
Conversion Time: Approaching 2 years in free time
Conversion Cost: Don’t want to know!
Many thanks to Frank and the folks at ev album!

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