Over the last year I've been converting my 1983 911 SC targa to an electric drive. Couple reasons: I've wanted an electric car for 15 years, ever since I drove one. I don't like many of the existing electric or hybrid cars available, and I don't want to pay Tesla prices for what is basically an amazing electric lotus roadster. I love the torque from an electric motor. Clean, quiet, reliable power. Lithium batteries are now at a point where it is feasible to get decent performance.
Here are some pictures from my build:
Having the motor and engine in the same image gives a good sense of scale. I am using a 9 inch diameter motor, the Warp9 from Netgain.
This hub is a taperlock two piece mount for bolting the flywheel to the motor.
Here the flywheel, clutch, and pressure plate are bolted together.
Motor and transmission are connected with a cast aluminum adaptor plate.
The motor is mounted in the car.
Here is the motor controller and liquid cooling loop. The controller is rated for 320 kWatts continuous (453 HP), but my motor will only handle 225 HP peak. I'll start with a limit around 150 HP and see how it goes. This limit is easily configured in the controller.
I am now working on mounting the batteries: 60 lithium cells (Lithium Iron Phosphate), 192 V, 1000 Amps, 34.5 kWh capacity - enought to go 100 miles on a charge and do 0-60 MPH in 7 seconds. I will end up 200 lbs over stock weight.
28 cells will go where the gas tank used to live. The rest of the cells will go in the back. Weight distribution will shift forward 1.5%.
The torque curve of the electric is superior at lower RPM. I will be giving up 20 MPH on the upper end but I rarely exceed 100 MPH anyhow.
