Sports car maker reveals lightweight electric city car concept
2 March 2010

AC Cars is displaying an electric city car concept with a lightweight magnesium frame at the Geneva motor show.

The prototype features a magnesium chassis frame with an integrated rollcage, and the whole structure weighs just 67kg.

See the AC Cars electric car concept interior and exterior pictures

Revised AC Mk VI at Geneva

Magnesium alloy extrusions form the main structure of the chassis, with corner node joints bonded to close the structure. AC says the chassis can be assembled "in minutes", and says the sections are self-jigging.

It is not certain that AC will build a production version of the car, but it is looking to sell its technology to other car makers.

“Our prototype magnesium chassis, initially for EV applications, is at the forefront of technology for which we own the rights and which can provide vehicle designers with the ultimate in low-weight potential,” said Alan Lubinsky, chairman of AC Cars.

“We fully expect intense interest in the progress we have made and we look forward to forging partnerships with vehicle makers to exploit this new technology”

The magnesium technology is a joint project between AC Cars and the Israeli company ALubin. The project is headed by ex-Lotus engineer John Owen and automotive designer Ron Saunders.

The electric drivetrain is being developed by Dr Moshe Miller, a consultant for more than 25 years to GM's electric car department.

AC Cars says it is also using the magnesium technology to develop a chassis for "a more sporty" car.

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Join the debate


25 February 2010


That'll be interesting if it catches fire.....

25 February 2010

My first thought too.

25 February 2010

It's quite hard to ignite magnesium.

I hope they use it for something better than for holding batteries.

25 February 2010

i had an old lancia with magnesium wheels. magnesium is the next aluminium.


25 February 2010

Interesting idea. Was the artist drunk when he/she drew the pictures as they seem to be out of focus.

25 February 2010

This is such an old chestnut! Every Volkswagen Beetle had a magnesium crankcase, and many current cars have magnesium Cross Car Beams supporting the dashboard.

Car fires are rare, and it is even rarer for the magnesium parts to burn. If you want to worry about fire risks, you have up to 70 litres of diesel or petrol, and all the plastic mouldings inside the vehicle.

25 February 2010

Has anyone been welding/angle grinding and left wire wool lying around? Even steel burns rather vigorously if you slice it thin enough...

25 February 2010

You can put pieces of magnesium on a bonfire and it does nothing at all.

25 February 2010

67KG. Not to be driven on windy days, perhaps?


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