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NSU Trapeze
NSU Trapeze at 2024 Salon Epoqu'auto
Overview
Manufacturer	Bertone
Production	1973
Designer	Marcello Gandini (Bertone)
Body and chassis
Class	2+2 sportscar
Body style	3-door coupé
Layout	Rear mid-engine, rear-wheel-drive
Related	NSU Ro 80
Powertrain
Engine	497.5 x 2-rotor Wankel, 115 PS (85 kW; 113 hp)
Transmission	3-speed manual with torque converter
Dimensions
Wheelbase	2,430 mm (95.7 in)
Length	4,080 mm (160.6 in)
Width	1,830 mm (72.0 in)
Height	1,100 mm (43.3 in)

The NSU Trapeze is a 1973 concept car designed by Marcello Gandini during his tenure at Bertone, inspired by patents held by Jean Celle.

History

At the 1971 Turin Auto Show, Bertone showed its prototype for the production Lancia Stratos HF. Two years later, at the Paris Motorshow in October 1973, Gandini showed a concept car called the Trapeze designed for NSU but inspired by the Stratos, whose influence was visible in many of the styling features of that model: very compact volumes, an enormous wrap-around windshield and side windows that did not continue to the rear. The wedge-shaped Trapeze also has similarities with the Autobianchi A112 Runabout, another of Gandini's designs for Bertone.

Strategy

The Trapeze was a sports car with a mid-engined configuration chosen to give the car an optimal weight balance. Bertone set out to build this concept car with a clear strategy in mind. First, Bertone wanted to further improve its relationship with Audi in its competition with Ital Design, who had just produced the Asso di Picche coupé for the German marque. Bertone made a tactical move by working with Audi's sister-brand NSU. Also, Bertone wanted to show its innovative power by creating a small and elegant sporty car that would still meet the American DOT safety standards that were introduced around that time.

Trapezium shaped concept

The engine was the bi-rotor Wankel from the NSU Ro 80, a 1.0-liter with an output of 115 PS (85 kW; 113 hp) and 158 N⋅m (117 lb⋅ft) torque. Thanks to the compact dimensions of the engine and the fact that it was positioned lengthwise rather than transversly, Gandini had space available to squeeze in two small back seats, making the Trapeze the first mid-engined sports car with room for four. The rear seats, however, were not positioned in the traditional way but towards the outside, left and right of the engine, while the front seats were set as close to the centre as possible in front of the engine. When looking at the seating arrangement from above, one could see a trapezium shape — the reason why the car is called Trapeze.

This setup was patented by Jean Celle in spring 1967, in which the seats formed part of the chassis. When Celle sent the concept to Nuccio Bertone, within weeks the Italian designer responded that this innovative setup went beyond what his firm could produce. When Bertone unveiled Gandini's Trapeze six years later, it differed from the patent in one way: the seats were not part of the chassis, but separate elements.

Thanks to this set up it was possible to reduce the distance between the two seating rows and to offer leg room to those sitting in the rear. On top of that, in terms of safety, the space between the front seats and the door established an element of protection in case of a side impact.

The Trapeze's nose had six rectangular headlights that folded away when not in use. There was an almost bumper-like band running all around the car, a side protection which later made its way to many production cars.

Although the Trapeze was constructed with components that were ready for production, the car never went into production because of the enormous costs for further developing the Wankel engine by NSU, its poor fuel economy, worsened by the fact that only a 3-speed manual transmission with automatic clutch was available, and the 1973 oil crisis, all factors that led the NSU to cease operations.

The Trapeze still exists in the Bertone collection, and was displayed during Époqu'auto in November 2024, together with 23 other Bertone concept cars.

Gallery

• Jean Celle Patent drawing
• NSU Trapeze interior at 2024 Epoqu'auto in Lyon
• NSU Trapeze rear at 2024 Epoqu'auto in Lyon
• Bertone designs, left bottom: NSU Trapeze

References

1. ^ "The NSU Trapeze by Bertone". carrozzieri-italiani.com. 2020-11-01. Archived from the original on 12 November 2024. Retrieved 2024-12-15.
2. "Trapèze NSU, 1973" (PDF) (in French). 2024.
3. ^ Vanderplaetsen, Arthur. "Eenmalig: 1973 NSU Trapeze: Concept" [One-off: 1973 NSU Trapeze Concept] (in Dutch). Archived from the original on 2021-08-29. Retrieved 2024-12-15.
4. Padeanu, Adrian. "1973 NSU Trapeze: Concept We Forgot". Motor1.com. Archived from the original on 12 June 2020. Retrieved 2024-12-15.
5. Buonocunto, Mario. "1973 Bertone NSU Trapeze". archivioprototipi.it (in Italian). Archived from the original on 2024-11-12. Retrieved 2024-12-15.
6. ^ "Lyon: Bertone, toute la magie de l'Italie" [Lyon: Bertone, all the magic from Italy] (in French). Archived from the original on 2024-12-15. Retrieved 2024-12-15.
7. Tosi, Adriano (20 November 2017). "NSU Trapeze, un po' Lancia Stratos, un po' Mazda RX-7" [NSU Trapeze, a bit of Lancia Stratos, a bit of Mazda RX-7] (in Italian). Archived from the original on 2020-06-12. Retrieved 2024-12-15.
8. Greggio, Luciano (1992). Bertone (in Italian and English). Vimodrone (MI): Giorgio Nada Editore. p. 323. ISBN 88-7911-066-7.

External links

• Navntoft, Søren (25 September 2018). "Trapeze and Safety". viaretro.com. Retrieved 2024-12-15.
• Sen, Gautam (25 January 2023). "When Bertone Tried To Save The German Brand NSU With An Innovative Concept Car". magazine.derivaz-ives.com. Retrieved 2024-12-15.

• NSU vehicles
• Bertone concept vehicles