A little less than 8 months ago, work began on the project of the Audi S1 e-tron quattro Hoonitrona competition car from Audi like no other.
This car is visually based on the legendary Audi Sport quattro S1 and in terms of its propulsion, it combines the best of the brand’s series production and competition electric propulsion systems.
The work for the Audi Sport Neckarsulm and Audi Design teams was not easy, but they finally achieved their goal and the vehicle was ready for the first test drives and the video shoot with Ken Block and his team.
The result was a success. Since the release of the video Electric Khanawhich was produced just 3 weeks ago, over four million people watched the video featuring Ken Block behind the wheel of the S1 e-tron quattro Hoonitron, drifting and circling the streets, casinos and parking lots of Las Vegas.
Next, they have facts and figures of the Audi S1 e-tron quattro Hoonitron and then the video:
Weight distribution and dimensions: well balanced
The 52:48 weight distribution between the front and rear axles is very balanced.
The wheelbase is less than 2.4 meters, much shorter than the 2,563-millimeter wheelbase of an Audi A1 Sportback, the entry-level model for the Audi range. This benefits cornering agility, as a short wheelbase favors yaw movements; that is, the spin of the car around its vertical axis, a key feature in the stunts performed in the Electrikhana.
The suspension, with McPherson struts on the front and rear axles and more than 200 millimeters of travel, is designed for extreme demands, including jumps.
With this basic concept, the Audi S1 e-tron quattro Hoonitron has the ideal characteristics for drifting and performing stunts on different terrains.
Two motors and electric quattro drive
The four-wheel drive of the Audi S1 e-tron quattro Hoonitron is fully electric. The front and rear axles each have a motor-generator unit (MGU) sourced from competition.
Each of these two MGU units only weighs 55 kilograms, including the transmission.
Four high-voltage batteries from a series-production Audi plug-in hybrid model, each with a capacity of 14.4 kWh, offer a total of 57.6 kWh, operating at 800 volts to power the drive system .
Plenty of power and torque – a perfect athlete
The electrical power distribution between the front and rear axles is fully variable. It can be perfectly adapted to the driver’s requirements, thereby precisely influencing the dynamic behaviour.
Each MGU develops a power of 250 kW and 320 Nm of torque, resulting in a total system power of 500 kW and a maximum torque of 640 Nm.
Since electric motors reach top speeds of 28,000rpm, the engineering team defined a gear ratio of approximately 12:1 for drifting. Taking losses into account, this works out to around 3,000Nm of torque on each axis, or 6,000Nm in total.
Thanks to these extreme figures of torque, Ken Block can perform spectacular drifts. Wheel speed can exceed 200km/h
In Audi’s long history in the world of motorsports, the combination of these characteristics together with the special purpose for which the vehicle has been developed is something unique.
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