An Inside Look at Rimac's Extreme Car Building Process

Founder Mate Rimac takes you through tooling, assembly, and dyno testing of the Concept_One and the C_Two.

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Rimac AutomobiliYouTube

Rimac Automobili is hard at work. Building two electric supercar models at the same time, based on completely different platforms and powertrains, is no walk in the park. But the automaker has completed the final three examples of the Concept_One, alongside 30 C_Two prototypes required for homologation. It's a major challenge for founder Mate Rimac's team, but they're forging ahead, as we see in the second episode of Discover Rimac Today. And we also learn more about the battery packs that Rimac is supplying for the Aston Martin Valkyrie project.

Even before you can build a car from scratch, you have to create the tooling to build it. Whether it's positive or negative molds, carbon fiber or machined metal, Rimac makes it all in-house. Next comes the building material: Pure or pre-preg carbon fiber in different weaves, Kevlar for chassis crash structures, and fiberglass here and there, sometimes laminated with copper for electromagnetic shielding.

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László Sebestyén

Like everybody in the industry, Rimac Automobili also uses different types of battery cells for a wide range of applications. And while we think of complete batteries as being just a huge collection of cells, they're only a portion of what goes into a battery: As Rimac explains, the Aston Martin Valkyrie's battery pack consists of 3000 parts, only 400 of which are cells.

Finally, Rimac needs to test its powertrains, which calls for a dyno capable of handling extreme amounts of power and torque. You won't be surprised to learn that to save some money, Mate Rimac ended up building his own system, which can simulate hot laps around the Nürburgring—minus the vibrations, of course.

There's a cost reason behind why high-end performance car manufacturers usually don't build 30 prototypes at once, and there's a reason why Rimac does it anyway. The Croatian car startup hopes that the C_Two will become a global phenomenon as soon as possible—and it seems that's already happening.

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