Known for building cars like the amazing Yellow Bird CTR, Porsche tuner and manufacturer Ruf is starting to set its sights on green performance vehicles. Although development work is still continuing on a bevy of supercars and a V-8-powered 911, the company is also advancing its development of electric-powered 911.
Ruf began tuning Porsches 35 years ago in the German town of Pfaffenhausen, located just 100-miles away from Porsche's Stuttgart headquarters. The firm built the first street-legal 911 to break 200 mph, the first 911 to wear 17-inch wheels with run-flat tires, along with the first five-speed and six-speed 911 Turbo models. History shows Ruf is generally one step ahead of the factory -- which is perhaps why some enthusiasts are more than fearful of the company's latest shocking (no pun intended) project.
In October of 2008, Ruf announced the construction of the first in a line of eRuf vehicles, dubbed Model A. The 997-based test vehicle weighed in at just over 4200 pounds, and was powered by a 200-horsepower motor. Not bad for a first attempt, but far from the numbers needed to be considered a real replacement for a gasoline engine. Development has continued along the way with the Model A, and then with the Stormster, the first full electric SUV based on the Cayenne. The Stormster raised power output to 367 horsepower, but its weight came in at roughly 6000 pounds. Ouch.
With further advancements, Ruf’s newest 997-based electric cars cars will boast either 241 horsepower or 335 horsepower from dual electric motors. The lower-powered version is said to use a standard Porsche transmission. Higher-powered models will receive either a single two-speed automatic transmission with limited-slip differential, or a system that uses two separate transmissions, one for each rear wheel, that allows for torque vectoring for improved handling.
The 241-horsepower eRuf will contain a 29 kilowatt-hour lithium-ion battery pack that will give the car a 93-mile range with a top speed of 137 mph and a 0-62 mph time of roughly 7 seconds. Both two-motor set ups will have a 36.6 kilowatt-hour battery pack, which is reportedly good for a 124-mile range. The single-transmission car is said to be capable of the same 137 mph top speed, while the torque vectoring car will only see 112 mph. Both two-motor cars are said to be capable of 0-62 mph in roughly 5 seconds.
Ruf hasn’t specified a weight on any of the three different drive configurations yet, but we expect them to be lighter than previous versions. The test cars will be built with on board data collection systems as research will be shared and partially funded by the German Federal Ministry of the Environment. Again, these cars are still a far cry from a true replacement to something like a 685-horsepower RT12, but Ruf is getting there, one watt at a time.
Source: Ruf GMBH