Evisol Thorr brings electric power to the Super 7
Click above for a gallery of the Evisol Thorr.
Since the Telsa Roadster is on the steep side and the Fisker Karma is strictly vaporware until we get to drive one, most electric sports cars are out of reach of mere mortals, but Evisol is looking to rectify that with its own version of the Lotus Super 7. Packing a Siemens-sourced electric motor and a set of lithium-polymer batteries, the Thorr has a continuous output of 91 hp, but can deliver a peak of 272 hp and 332 lb.-ft. of torque. In true Seven fashion, the Thorr is about as minimalist as it can get, but in addition to losing the luxuries of a modern automobile, the lack of a transmission, ABS, boosted brakes and anything resembling sound absorption material has it tipping the scales at 1,664 pounds. Theoretically, that should allow the Thorr to make a quiet sprint to 60 in a few ticks over three seconds. How quiet? Check the video after the jump to find out.
Gallery: Evisol Thorr
[Source: Evisol via Carscoop]
SPECIFICATIONS
Motor
• Type: Siemens 1PV5135WS28 3 Phase Induction Motor
• Number of Poles: 4
• Continuous Power: 67 kW – 91 hp
• Maximum Power: 200 kW – 272 hp
• Continuous Torque: 160 Nm
• Maximum Torque: 450 Nm
• RPM Range: 0 – 10.000
• Cooling: Water/Glycol
• Weight: 86 kg
Inverter
• Type: Evisol EVI-200
• Nominal Voltage: 750 VDC
• Maximum Voltage: 900 VDC
• Maximum Output Current: 350 Arms
• Continuous Output Current: 300 Arms @ 4kHz switching frequency
• Maximum DC Input Current: 350 A
• Switching Frequency: 2-8 kHz
• Powerstage: Semikron Skiip 3 Integrated IGBT Module
• Phases: 3
• Cooling: Water/Glycol
• Weight: 24 kg
Battery System
• Cell Type: Kokam Lithium Polymer
• Nominal Cell Voltage: 3,7 VDC
• Capacity: 40 Ah
• Continuous Current: 10C
• Number of Cells: 196
• Total Battery Capacity: 29 kWh @ 100% DOD
• Cycle Life: > 1200 @ 80% DOD
• End of Specified Life: 80% of Original Capacity
• On Board Charger Type: Evisol EVMC-30
• Charger Output Power: 30 W
• Power Factor: > 0.99 @ 30 W output power
• Number of Chargers: 196
• Power Requirements: 3 x 1 Phase, 110 – 240 VAC, 50 – 60 Hz, > 6 kW
• Battery Management System: Cell Charging with EVMC-30. Communication with EVI-200
• Features BMS on Cell Level: SOC, SOH, Temperature, Voltage, Charge Current, Discharge Current, Cell Connections, Fault Indication, User-Interface• Battery Modules: 14 Cell Modules of 14 Cells, Max. Module Voltage <>
Final drive
• Rear Wheel Drive
• Direct Drive, no gearbox
• Differential: Ford Sierra 1 : 3,92
Chassis
• Type: Tubular Space Frame (60kg)
Suspension
• Front: Adjustable Double Wishbone
• Rear: Adjustable Double Wishbone
• Spring / Shock Absorber: Adjustable
Geometry
• Wheelbase: 2373 mm
• Front Track: 1451 mm
• Rear Track: 1472 mm
• Maximum Height: 111 cm (Roll Bar)
• Minimum Ground Clearance: 54 mm (Flat Ground Plate)
Steering
• Rack and Pinion: 2,7 turns lock to lock
Vehicle Weight
• Total Vehicle Weight: 755 kg
Wheels and Tyres
• Wheel: Aluminium Alloy 6J X 15''
• Tyre: Toyo Proxes 195 / 50 R15
Direct Emissions
• CO2: 0 gr / km
• NOx: 0 gr / km
• Particles: 0 gr / km
Range
• Range New European Driving Cycle: 200 km
• Range @ 120 km/h: 140 km
• Range @ 80 km/h: 230 km
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Reader Comments (Page 1 of 1)
Sean Flanagan 4:37PM (4/28/2008)
"Total Vehicle Weight: 755 kg"
Awesome.
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Farris 4:53PM (4/28/2008)
I could have sworn that people have been doing this for years.
Although, I never really looked into the details, so the numbers may not have been as high (HP and TQ) or low (weight... 755 kg? that's AWESOME!).
And that sound.... damn I love it!
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Justin 5:13PM (4/28/2008)
very cool idea, but i just don't know about the lack of engine sound. Where's that v8 soundtrack again?
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harribert 5:15PM (4/28/2008)
>>the Thorr has a continuous output of 91 hp
excuse my ignorance, but what on earth do they mean by "continuous power output"?
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mk 5:57PM (4/28/2008)
It puts out steady torque and horsepower, regardless of RPM.
Basically the dyno curve would look like a table top. Horizontal.
zamafir 5:34PM (4/28/2008)
Sure, we'll excuse it. with electric motors the output is continuous, from zero to max rpm, if you've ready anything on the tealas it's been mentioned a million times. Though with the tesla, peak power falls off towards the top of the rev band, I’ve not seen dynos on this car yet so im not sure about it’s nuances.
drtibbs 5:38PM (4/28/2008)
I cant say for sure with this car but when I use lithium batteries for rc cars they have a sustained discharge and a maximum burst amount, that would be over 10 seconds. This car could have a limit in it's motor controller.
Derek 7:53PM (4/28/2008)
Sorry guys, that's not what is meant by continuous HP.
Continuous HP is the HP level that the motor can sustain indefinitely. Feed more amperage through there and the motor will make more power - at the expense of motor life. You can take it to extremes even and make crazy hp for a few seconds before you "let the smoke out". Many motors are rated with continuous HP, and HP at several higher levels combined with a motor life at XXX hp.
So, this car CAN put down 272hp, but only for so long before the controller probably kicks in and shuts it down. It's okay though because you will probably run out of straight road first...
zamafir 5:35PM (4/28/2008)
*tesla
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bolhuijo 5:35PM (4/28/2008)
Continuous power output is what the motor and the motor controller can handle on a continuous basis without overheating. Maximum power is what it will do in short bursts.
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PaulV 6:51PM (4/28/2008)
I've been wondering when someone would do this (we've already seen the motorbike engine in a 7).
Re sound: the electric remote control plane community has already started adding soundtracks of their choice. So maybe in future we'll drive a V8 to work, and a Merlin V12 back home (sound-wise!)...
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Fooman 7:23PM (4/28/2008)
OK that is freaky.. you keep expecting to hear an engine noise every time that thing comes near a camera.
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Craig 8:46PM (4/28/2008)
That is cool.
You don't need any noise to go along with it. Having an engine noise would distract you from the road music you will have cranked to maximum.
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pmiddle5 2:06AM (4/29/2008)
The only thing I have about EV's...No pretty noises =(
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Cray 8:01AM (4/29/2008)
I like the fact that its quiet, We need to reduce the noise pollution. Look at the amount money governments have spent putting up sound barriers along busy highways and airports. They are an eyesore and a waste of taxpayers dollars.
Quieter cars might be dangerous at first but it will just mean pedestrians will have to be more careful. I'm sure we'll see some warning technology implemented in e-cars and high traffic areas.
That e-car looks fun to drive.
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mo 3:47PM (4/29/2008)
You will probably need something though like a deer whistle to warn animals and such. Or maybe even a speaker on the front that makes a ticking noise so that blind people can hear you coming.
Overall though, I really like the quiet car idea.
Kaveman 3:41PM (4/29/2008)
Dunno if they did this deliberately (by overlaying a 2nd audio track) but you can literally hear the birds twitter in the trees. As an Italian motorcyclist [read booming V-Twins and ravenous induction scream] I *love* the sound of a nice motor, but this has an appeal all to itself. Hell, *I'd* buy one.
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David Harris 11:11PM (4/29/2008)
Love the form factor (its classic) I can't help but think that driving would be a new experiance in silence. I have so loved the sound of a motor that in my own sports cars of the past I have never listened to a radio, just the tone of the motor.. That said... I'd give it a go!
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