| MODEL | NSU 501 OSL & TS 1930 - 1936 |
| Year | 1930 - 1936 |
| Engine Type | Single cylinder, 4 stroke, OHC |
| Displacement / Capacity | 494 cc / 30.1 cu in |
| Bore X Stroke | 80 x 99 mm |
| Compression Ratio | 6:1 |
| Cooling System | Air/Oil cooled |
| Max Power | 8.1 kW / 11 hp @ 5020 rpm |
| Max Torque | — |
| Ignition | Magneto |
| Induction | — |
| Start System | Kick start |
| TRANSMISSION SPECS | |
| Lubrication | Gear driven oil pump |
| Gear Box | 3 Speed |
| Clutch | — |
| Final Drive | Chain in oil bath |
| CHASSIS SPECS | |
| Frame | Steel, double pipe |
| Front Suspension | Spring loaded fork |
| Rear Suspension | — |
| Front Brakes | — |
| Rear Brakes | Internal shoe |
| DIMENSION SPECS | |
| Overall Length | — |
| Overall Width | — |
| Overall Height | — |
| Seat Height | — |
| Wheelbase | — |
| Ground Clearance | — |
| Dry Weight | 165 kg / 364 lbs |
| Wet Weight | — |
| WHEEL SPECS | |
| Front Tyre | 19 in, high pressure |
| Rear Tyre | 19 in, high pressure |
| FUEL SYSTEM | |
| Fuel Capacity | — |
| Fuel Consumption | — |
| Top Speed | 100 km/h / 62 mph |
The 501 OSL and TS were practical, robust 500 cc overhead-cam singles with a modern saddle tank and 19-inch high-pressure tyres. A right-hand segment gear lever improved riding comfort. The TS line stayed in the NSU range for twelve years.
