| MODEL | NSU DELPHIN III 1956 |
| Year | 1956 |
| Engine Type | Twin cylinder, 4 stroke, two-shaft overhead camshaft (bevel gear drive), rotary supercharger, methanol fuel |
| Displacement / Capacity | 498.7 cc |
| Bore X Stroke | 63 x 80 mm |
| Compression Ratio | — |
| Cooling System | Air |
| Max Power | Approx. 81 kW / 110 hp @ 8000 rpm |
| Max Torque | — |
| Ignition | — |
| Induction | — |
| Start System | — |
| TRANSMISSION SPECS | |
| Lubrication | — |
| Gear Box | 4 Speed block |
| Clutch | — |
| Final Drive | — |
| CHASSIS SPECS | |
| Frame | Double cradle, tubular, fully faired |
| Front Suspension | Parallelogram type |
| Rear Suspension | Telescopic |
| Front Brakes | Central drum |
| Rear Brakes | Central drum |
| DIMENSION SPECS | |
| Overall Length | — |
| Overall Width | — |
| Overall Height | — |
| Seat Height | — |
| Wheelbase | — |
| Ground Clearance | — |
| Dry Weight | — |
| Wet Weight | — |
| WHEEL SPECS | |
| Front Tyre | — |
| Rear Tyre | — |
| FUEL SYSTEM | |
| Fuel Capacity | — |
| Fuel Consumption | — |
| Top Speed | 339.6 km/h / 211.04 mph |
The Delphin III was a fully streamlined, supercharged 500 cc twin built to take the world speed record. Wilhelm Herz rode it to 211 mph at Bonneville in August 1956, around 25 mph above the previous record. The cockpit was shaped to fit Herz so tightly that his helmet knocked the fairing, so he finally rode without it.
