Fisker Shows Off Aluminum Space Frame

Fisker Karma Space Frame

In a couple days, Fisker will be displaying their advanced aluminum space frame used in their Karma plug-in hybrid sports car at the 2010 Geneva Motor Show. Built around their Q-Drive hybrid powertrain, the space frame focuses on strength and rigidity to house the 2.0-liter turbocharged engine, a lithium-ion battery pack, and a rear-mounted 403hp traction motor assembly.

A super-structural tunnel running down the car’s centerline acts as the Karma’s backbone. It not only houses the battery pack but acts as a torque tube connecting front and rear sections. For optimal strength the Karma’s space frame is joined with 79 meters of precision CMT MIG welds and 1,058 self-piercing rivets. Each technique is used independently only where necessary to ensure top quality and durability.

The less technical-minded of us are probably thinking “who the hell cares?” Well, torsional rigidity – the amount of twisting the thing does when put under stress – is very important for driving dynamics of a sports car. That’s why you always hear sports car enthusiasts drone on about a convertible not being a proper sports car. It doesn’t have the same rigidity of a coupe, which means it’s not quite as quick around a windy road, or more importantly, a track. Fisker wants us to know that the Karma has great strength in the frame while keeping the car as light and safe as possible.

Interesting fact – this information was released to the press over a week ago, but for some reason Fisker embargoed it until today, meaning if we want to stay buddy-buddy with Fisker, don’t release the info until now. Why they wouldn’t want the public to know about their space frame before now is a complete mystery to me.

About The Author

I founded Automoblog.net in May of 2006 to share my love of cars. My favorites include the Lamborghini Diablo 6.0 VT and Koenigsegg CCX, and I think the Ferrari 360 Spider is still one of the sexiest cars in existence. For “normal” cars, I like imports - Nissan, Audi, Subaru... I love my Pearl Yellow (don't judge) 1990 Nissan 300ZX TT and plan to get it to around 550 HP one day. I'm also an avid world traveler and love rock climbing.

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