NSU 4PS: history, specs, pictures
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| Manufacturer | NSU |
|---|---|
| Production | 1921 - 1925 |
| Engine | twin, four-stroke |
| Bore / Stroke | 63.0mm x 80.0mm |
| Top speed | 50 mph (80 km/h) |
| Horse Power | 6.3 HP (4.7 KW) @ 3000RPM |
| Fuel system | carburettor |
| Transmission | Final Drive: belt |
| Front Tire | 2.5-26 |
| Rear Tire | 2.5-26 |
| Wheelbase | 55.71 inches (1415 mm) |
| Dimensions | L 86.61 inches (2200 mm) W 33.07 inches (840 mm) H 29.13 inches (740 mm) |
| Weight | 264.55 pounds (120.0 Kg) |
| Fuel capacity | 2.38 Gallon (9.00 Liters) |
| Manuals | Service Manual |
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The NSU 4PS was a twin, four-stroke standard produced by NSU between 1921 and 1925. It could reach a top speed of 50 mph (80 km/h). Claimed horsepower was 6.3 HP (4.7 KW) @ 3000 RPM.
Engine
The engine was a air cooled twin, four-stroke. A 63.0mm bore x 80.0mm stroke result in a displacement of just 498.0 cubic centimeters.
Chassis
It came with a 2.5-26 front tire and a 2.5-26 rear tire. The 4PS was fitted with a 2.38 Gallon (9.00 Liters) fuel tank. The bike weighed just 264.55 pounds (120.0 Kg). The wheelbase was 55.71 inches (1415 mm) long.