| Owner | Wayne Krauth | ||||
|---|---|---|---|---|---|
| Owner's Other EVs | 1999 Saturn SL2 2013 Chevrolet Volt | ||||
| Location | Steep Falls, Maine United States map | ||||
| Web/Email | WebPage | ||||
| Vehicle | 2010 Factory Five Mk4 Roadster Kit car, replica of a 1965 AC Cobra. | ||||
| Motor | General Electric , Dennis Berube racing motor Series Wound DC 11" diameter GE motor built with Dennis's secret sauce for drag racing. 220 lbs | ||||
| Drivetrain | Direct Drive, motor to rear end, 2.73 gear ratio | ||||
| Controller | Manzanita Micro Zilla 2k HV Liquid cooled, Hall Effect pedal, 2000 amps. | ||||
| Batteries | 336 A123 Systems 20Ah pouch, 3.34 Volt, Lithium-Ion 84S4P Orion BMS with Torque on Android tablet as part of the dashboard | ||||
| System Voltage | 280 Volts | ||||
| Charger | Manzanita Micro PFC 30 wired to accept 115V, 230V and J1772 | ||||
| Heater | jacket and gloves | ||||
| DC/DC Converter | DC/DC 110-360V input from evsource | ||||
| Instrumentation | GPS speedometer / odometer, tachometer,state of charge, motor temperature, Bluetooth BMS monitor via Android tablet, SoundRacer engine sound simulator. | ||||
| Top Speed | 150 MPH (241 KPH) Estimated | ||||
| Acceleration | 0-60 in about 3 seconds 1/8 mile - 7.06 sec at 91 mph with 1.51 60 ft. | ||||
| Range | 65 Miles (104 Kilometers) 21 kWh pack | ||||
| Watt Hours/Mile | 350 Wh/Mile Working to improve aerodynamics on this car. Also expect that range will improve after a few hundred or thousand miles. New brakes & pads, and maybe rear-end need to break-in | ||||
| EV Miles |
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| Seating Capacity | 2 adults | ||||
| Curb Weight | 2,240 Pounds (1,018 Kilograms) Approximately 2240 lbs | ||||
| Tires | 9" wide rims on front, 10.5" on rear Front tires: BF Goodrich 245/45R17 g-force super sport A/S Rear: Hoosier slicks for for drag racing or 245/45R17 for street | ||||
| Conversion Time | 6 years | ||||
| Conversion Cost | trying not to think about it | ||||
| Additional Features | - No roof. - SoundRacer - Simulated engine sound of a Shelby V8, tied to throttle input, high powered speakers in car nose. - Bluetooth connected Android tablet running Torque to create a configurable dashboard display with multiple gauges - USB connection for laptop to configure BMS - Serial port connection to Zilla motor controller - Terrible aerodynamics on this car! Coefficient of drag appears to be 0.5, so range is not as good as I was hoping, but it sure accelerates nicely! | ||||
| This is a new EV build from scratch, not a conversion. Construction started 12/31/10. 1/21/11 - Designing and fabricating the motor mounts. Next up, install the 8.8" rear end and figure out the drive shaft length. 3/3/11 - Motor installed, now assembling rear end. 3/20/11 - Third motor mount completed, rear end temporarily installed to measure for drive shaft length. Brake pedal and pistons installed. Accelerator pedal installed. Steering installed. Started installing aluminum panels... 4/5/11 - Custom length drive shaft on order, front brake lines installed, fuse panel and main wiring harness, dashboard harness in place. The passenger foot box aluminum is riveted in, and a few other pieces. The rear battery box frame has been built and installed. 4/23/11 - Drive shaft in, front brake lines in, wiring harnesses laid out, dashboard covering glued on and many gauges, switches and indicators mounted. Dash wiring under way. 6/14/11 - Dash wiring mostly completed and working, line lock installed, controller shelf fabricated and mounted, controller installed and it's wiring is started. Throttle position sensor mounted and is working good mechanically. Rear end 80% assembled and almost ready to install. Front battery tray has been fabricated and welded in. 7/12/11 - Rear end installed with calipers and rotors, started on emergency brake. Motor controller now powered up with 12V, throttle pedal works smoothly from 0-100% according to the dashboard display for the motor controller. A set of 5 contactors are installed, 2 for forward, 2 for reverse, and the main. Now wiring contactor controls. 12V direct to the motor now spins the rear wheels. :-) Liquid coolant reservoir and pump have been mounted, still need to mount the radiator, wire the fans, fabricate something to mount a coolant temperature sensor, and add tubing to complete the motor controller cooling system. 7/22/11 - Rear brake lines installed, emergency brake assembled, installed and adjusted. Added brake fluid last night, now looking for any additional leaks. Rear tire rims mounted temporarily to make sure the brake and e-brake lines are not rubbing against them. Two 12V lead acid batteries are temporarily in place to provide a minimal traction pack to the motor controller for testing. Contactor controls are now wired and working when manually powered, but not with the full system activated. currently troubleshooting. 9/21/11 - Finished the brakes, emergency brake, and rear end installation. Ran 12 hours at 12v on the motor to finish seating the brushes. Built framework to support the radiator that cools the motor controller. Installed the liquid pump, tubing, fans and wiring for the radiator. Added more trunk aluminum and passenger side cockpit aluminum. Mounted a stereo in the dashboard. Increased traction pack to 72V (6 x 12V lead acid) for low voltage drive testing and to run the car until I can get a lithium pack together. The 72V pack will make about 50 hp in this car. Installed 4 borrowed tires (thanks Dane!) for temporary use until the car becomes road ready. 9/27/11 - First test drive!!! Minimally equipped to be driven, no body, no lights, lots of stuff half-done, but it runs! 1/25/12 - Battery packs under construction. 7 packs total at 330V nominal. 8/20/12 - 3 battery packs completed and installed. BMS, charger, SoundRacer, wireless tablet access all installed and working. Body has been mounted 9/11/12 - All body parts mounted. All lights and wipers complete and working. New tires installed. Now installing the carpeting and waiting for the State inspector to arrive and assign a VIN number. 9/20/12 - 20 mile test drive today! 11/25/12 - Building up second set of battery packs to bring car to 240V from 120V. Poor aerodynamics and high rolling resistance tires are hurting the range. Looking to make modifications for both aero and tires. 2/22/13 - Three rear batteries done to make the rear pack. Pulled motor out to change to different brushes. 3/31/13 - Front to rear wiring conduits finished, rear battery tray height modified to better fit battery packs. Starting weather tight enclosure for rear pack. 6/15/13 - Finally getting some break-in miles on the car at low power settings. Limiting motor to 500A max for now. 7/29/13 - motor break-in looking very good. Increased to 1000 max motor amps, and then to 1200A after a few more drives. At this power level (about 250kW or 335 hp), the car is a rocket. 0- 60 is now under 5 seconds. 8/15/13 - increased motor current to 1350A. 0-60 in 4.2 seconds, 213 ft 7/1/14 - major drivetrain upgrade in progress. Installing a Dennis Berube drag racing motor with a 2 speed converted Powerglide transmission. Car body is out at the paint shop. 8/18/14 - Painted body on, still working through additional finish work, chrome, etc. After 130 miles, increased max motor amps from 1000 to 1200, making it easy to break traction. 8/24/14 - Set NEDRA XS/B drag racing record for 1/8 mile, while running at 64% power. 9/13/14 - Climbed Mt Washington 9/28/14 - changed rear end from 4.10 to 2.73 to increase top speed and maintain hard acceleration to higher speeds. 7/31/15 - Set NEDRA FC/B record. fastest pass at 7.20 seconds 87 mph, 1.51 second 60 foot. 6/10/2016 - Set NEDRA FC/B record, 7.06 seconds @ 90 | |||||
2010 Factory Five Mk4 Roadster
“Snake Oil”
Last Updated 01-16-2018
Copyright © 1997-2024 by Mike Chancey