AUTO UNION TYP C
RUOTE BORRANI RW1367
Borrani pays tribute to one of the most revolutionary cars of all times. When Ferdinand Porsche decided to enter the Grand Prix races, he did it by subverting all rules, starting from the engine position: behind the driver.
The driver could sit lower with no drive shaft and the front-to-rear weight distribution was more even. Furthermore, the fuel tank was also located centrally so the balance would not change as fuel was used — just as in today's Formula One, and for the same reason.
The 6-liter engine featured – in 1934! - a V-16 architecture, Roots compressor, aluminium monobloc, light alloy cylinder heads. It delivered a stunning 520 HP.
No less innovative was the space frame, chrome-molybdenum chassis, supporting a light body made in aluminium panels. Eighty years later, this solution is still applied by the best Grand Tourers. Another ground-breaking feature was the suspension scheme, with front trailing links and front and rear torsion bars.
For such a daring design, at least 25 years in advance, Auto Union could only choose extraordinary wheels: the Borrani RW1367 with 84 spokes and "DD" light alloy rim sized 19x3.62. To reduce wheelspin, twin rear wheels are fitted for hill climb races.
The final result is up to expectations. In 1934, the Typ C won 8 races with Hans Stuck and Achille Varzi. Two years later, the same drivers and Bernd Rosemeyer dominated. They won 6 out of 12 races, and Rosemeyer was European Champion.
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