alfy28

Following recent rumours of a fully electric powered Cayman prototype, it has been revealed that the Porsche specialty tuner, Ruf, has in fact developed a fully electric powered 997 prototype. It features a 204hp (150kW) electric motor producing 650 Nm (480 lb-ft) of torque.

Despite carrying 550 kilograms (96 battery cells each weighing 5.6 kg) worth of Axeon lithium-ion batteries, the 911 goes from 0 to 100 km/h (62 mph) in less than 7 seconds. After some mathematical acrobatics, a theoretical top speed of 224 km/h (139mph) is possible given its 1900 kg weight and 160 amps per cell. The 911 EV has a driving range of 250-300 km (155-180 miles) under normal driving conditions.

http://www.worldcarfans.com/9081010....ed-porsche-911

JRichter

Electric 911. What is the world coming to? Wonder what the F/R weight distribution is.

bulletproof21

neat, but how does the Tesla get a 0-60 time of close to 4 seconds?

Silver06

^ Electric motors produce full torque from just above stopped to full rated RPM.

The Tesla works by having a large motor and high gearing. When they figure out a transmission for the Tesla, it will have good top speed as well.

I'd imagine the Porsche will also have a large motor. The drawback always has been in the battery pack. If you have batteries that can deliver a huge amount of amps in a very short time, they have (so far) been either very large/heavy, have issues with heat dissipation, battery cell life, or cannot offer a very long range before they need charging.

The range question is very subjective, so I'm not going there. Battery and electronics technology is making great strides with the heat, power, and life.

I'm looking forward to this! Imagine a racing series with electric cars!!!

JRichter

I don't know but maybe because its basic weight (w/o the batteries) is some 1000 lbs lighter to begin with.