Un grup d'entusiastes van rebre en donació el últim xassís del sunrise el 2005, que no es va construir mai.
A partir del xassís volen desenvolupar un kit per vendre'l.
Els desitgem el millor en aquesta empresa, tot i que el enfocament no sempre és el més òptim... en el prototip han col·locat 750 kg de bateria de plom que permet només 150 km d'autonomia. Les suspensions i el xassís també pesen molt més!!... Massa pes, poca cura per la eficiència! On són aquells 600 km del primer sunrise??
Abans d'invertir-hi 100.000 dollars, jo abans em decanto pel tesla. Tot fet i amb garantia!
la pagina web:
http://www.sunrise-ev.com Quote:Welcome! We are a group of dedicated electric vehicle enthusiasts whose goal is to create an affordable, high performance electric kit car that anyone of modest skill can assemble. The Sunrise EV2 is a four-passenger pure electric sports sedan, designed to meet all the safety, performance, and comfort requirements of a modern state-of-the-art automobile.
The original Sunrise was designed by Solectria Corp. using the Hypercar principles of Amory Lovins. It achieved remarkable efficiency and range, through the use of lightweight construction, innovative design, and superb aerodynamics. Unfortunately, only a handful were produced before Solectria went out of business.
We bought the last unfinished Sunrise from Solectria CEO James Worden. It is being redesigned as a kit car, along the lines followed by manufacturers of light plane kits for the EAA (Experimental Aircraft Association). The steps are:
* Step One: Build a working prototype, that interested parties can see and drive. Test the design and verify performance.
* Step Two: Publish plans, sufficient to build the entire car from scratch, just as we are doing now.
* Step Three: Provide key components produced from our molds and tooling, such as fiberglass body and welded chassis parts, to simplify construction.
* Step Four: Produce parts kits and subassemblies. For example, all the major parts needed to build the body, rear subframe, wiring harness, etc.
* Step Five: Offer a complete car kit. Combined with parts from a donor vehicle and purchased new on the open market, anyone who can handle a screwdriver and wrench could put it together.
* Step Six: Someday, perhaps a fully assembled production automobile. I doubt we will get to this point for years, due to the costly regulatory requirements.
Our goal is to make the Sunrise EV2 as modular and open source as possible; like a PC clone, where many different parts can be used, from many different vendors. We'll provide the basic "box". Builders can then use any motor, controller, batteries, charger, interior, and instrumentation they like. Depending on your budget and performance requirements, your Sunrise can be AC or DC, lead-acid or lithium batteries, etc.
We look forward to having a community of Sunrise EV2 builders, where members can exchange ideas, buy/sell/trade parts, and assist others in building their cars.
Quote:
Solectria Sunrise vs. Sunrise EV2 Comparison
The Solectria Sunrise cost over $100,000 because it was designed to be mass produced in high volumes, but was actually hand made in low volumes. It was optimized for efficiency, not performance; and built around donor car parts that are now over 15 years old. There were also aspects that were unfinished, to be optimized later if/when full production could be reached.
The Sunrise EV2 design has therefore been updated and improved in a number of areas. Here are the differences between the original and our version.
Battery Box:
* The original was 108"L x 14.5"W x 11"H. It ran from just behind the front wheels to just behind the rear wheels. This made access difficult, and limited battery size choices.
* The EV2 box is slightly larger; 120"L x 15"W x 12"H. This allows a much larger range of standard batteries. It extends to the front bumper. The batteries are in a tray that slides out with the front bumper, for fast easy servicing and maintenance. Multiple trays can be used; one for range, one for speed, or even a hybrid tray that's half batteries and half ICE generator.
Brakes:
* The original had manual Geo Metro front disks, and Dodge Neon rear drum brakes. The AC drive system provided regenerative braking.
* The EV2 braking system comes from the donor car. Depending on the year and options chosen, it will be power assisted front disks, rear disks or drums, and with or without ABS. The vacuum pump doubles as an air compressor for adjusting air bag ride height and emergency tire inflating. Regenerative braking is not planned for the prototype (Minnesota is pretty flat), but is provided for if desired.
Motor:
* Solectria used an expensive custom air cooled AC induction motor, rated at 50 KW. Though highly efficient, acceleration was weak and there were overheating problems.
* Though any motor can be used in the EV2, we're using a conventional Netgain WarP 9" series DC motor in the prototype. Though this reduces efficiency 10%, price is drastically lower and this type of motor provides extremely high levels of peak power. The motor is mounted behind the rear wheels and directly coupled to the differential with a standard spider coupler with virtually no machining.
Transaxle:
* The original Geo Metro transaxle drove the front wheels. It was locked in 2nd gear, as the AC motor had a 13,000 RPM limit and was electrically reversed. Though light, it was not very strong. As the batteries were in the rear, you had the odd situation of a front wheel drive car that is tail-heavy -- not good for handling.
* The EV2 has been changed to rear wheel drive, more befitting a sports car. A Ford 8.8" differential from the donor car is used, with new gears for a 5:1 ratio. This is a very strong part, often used in drag racing. No transmission is needed, and the motor is electrically reversed. The differential is flipped 180 degrees so it is upside down with the drive shaft pointing rearward. Dry sump lubrication is used with lighter weight oil to improve efficiency.
Suspension:
* The original used 1994 Geo Metro front, and 1994 Dodge Neon rear suspension components. Though light, it was inadequate for the car's 2979 lbs GVWR; handling and braking were mediocre.
* The EV2 uses 1989-1997 Ford Thunderbird or Mercury Cougar front and rear suspension components. These cars are "super coupes" with the excellent handling of luxury sports cars. Their 4400+ lbs GVWR safely carries considerably more weight. They have the power disk brakes and power steering expected in a modern car. Everything attaches to easily removed bolt-in front and rear subframes. Air bags and adjustable shock absorbers are used to accomodate the large range of vehicle and battery pack weights possible.
Wheels and Tires:
* Original: 13" Geo Metro front and Dodge Neon rear, with different bolt circles made matching front/rear rims difficult.
* EV2: 15" from Thunderbird/Cougar donor. We are using Goodyear Integrity 185/65R15 low rolling resistance tires from the 2004-07 Prius.
Quote:Sunrise EV2 Prototype Specifications
Dimensions
* length 178" (452 cm)
* width 74" (188 cm)
* height 54" (137 cm)
* wheelbase 104" (264 cm)
Weights
* curb weight without batteries 1650 lb (750 kg)
* battery pack weight 1650 lbs (750 kg)
* payload 900 lb (409 kg)
* GVWR 4200 lb (1909 kg)
Drive system
* Netgain WarP 9" series DC motor
* Cafe Electric Zilla 2K-LV 156vdc 2000amp controller
* direct rear wheel drive via 5:1 differential (no clutch or transmission)
Batteries
* 22 6v GC2 size lead-acid batteries
* batteries housed in easy-to-remove slide-out tray, 120"L x 15"W x 12"H
* any type battery can be used; lead-acid, nicad, nimh, lithium, etc.
Suspension
* front: steel subframe with independent upper/lower A-arms, air springs, adjustable shock absorbers
* variable-assist rack-and-pinion power steering
* rear: aluminum subframe with independent upper/lower arms, air springs, adjustable shocks
Brakes
* vacuum power assisted antilock disk brakes
Tires
* Goodyear Integrity 185/65R15 low rolling resistance
Performance
* acceleration: 0-30 mph in 4 seconds, 0-60 mph in 9 seconds
* range (lead-acid): 60 miles at 60 mph, 85/55 miles city/highway