Comparison of NSU 501T 1927 and NSU 601 OSB 1937 [S]ave
| Attribute |  NSU 601 OSB 1937 × |  NSU 501T 1927 × |
|---|---|---|
| General | ||
| Production from (year) | 1937 | 1927 |
| Make | NSU | NSU |
| Model | NSU 601 OSB | NSU 501T |
| Category | Sport | Allround |
| Engine and transmission | ||
| Engine type | Single cylinder, four-stroke | Single cylinder, four-stroke |
| Fuel system | Carburettor. Amal | Carburettor. Amac OJ 15 |
| Displacement (cm³) | 562 | 494 |
| Power (kw) | 19 | 8 |
| Cooling system | Air | Air |
| Transmission type,final drive | - | Chain |
| Bore (mm) | 85 | 80 |
| Stroke (mm) | 99 | 99 |
| Gearbox | - | 3-speed |
| Ignition | - | Magneto |
| Chassis | ||
| Front brakes | Expanding brake (drum brake) | Expanding brake (drum brake) |
| Rear brakes | Expanding brake (drum brake) | Expanding brake (drum brake) |
| Frame type | - | Double steel |
| Front tyre | 3.50-19 | 3.50-26 |
| Rear tyre | 3.50-19 | 3.50-26 |
| Seat | Single | - |
| Wheels | - | Spoked |
| Other | ||
| Starter | Kick | Kick |
| Dimensions | ||
| Wheelbase (mm) | 1,420 | 1,390 |
| Dry weight (kg) | 150 | 158 |
| Power/weight ratio | 0.1267 | 0.0506 |
| Overall height (mm) | 1,000 | 1,040 |
| Overall length (mm) | 2,200 | 2,100 |
| Overall width (mm) | 850 | 830 |
| Performance | ||
| Top speed (km/h) | - | 100 |
| Fuel capacity (l) | - | 12 |
| Oil capacity (l) | - | 2 |
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