NSU 251 OSL: history, specs, pictures
The NSU 251 OSL WH was a single cylinder, four-stroke allround motorcycle produced between 1933 and 1941. It could reach a top speed of 59 mph (95 km/h). Claimed horsepower was 10.33 HP (7.7 KW) @ 5300 RPM.
Engine
The engine was a air cooled single cylinder, four-stroke. A 64.0mm bore x 75.0mm stroke result in a displacement of just 242.0 cubic centimeters.
Drive
The bike has a 4-speed transmission. The final drive was via chain.
Chassis
It came with a 3-19 front tire and a 3-19 rear tire. Stopping was achieved via expanding brake (drum brake) in the front and a expanding brake (drum brake) in the rear. The 251 OSL WH was fitted with a 2.91 Gallon (11.00 Liters) fuel tank. The bike weighed just 317.47 pounds (144.0 Kg). The wheelbase was 50.59 inches (1285 mm) long.
In Media
| Manufacturer | NSU |
|---|---|
| Also called | 251 OSL WH |
| Production | 1933 - 1941 |
| Class | Road |
| Engine | single cylinder, four-stroke |
| Bore / Stroke | 64.0mm x 75.0mm |
| Top speed | 59 mph (95 km/h) |
| Horse Power | 10.33 HP (7.7 KW) @ 5300RPM |
| Fuel system | carburetor. amal |
| Ignition type | battery-bosch |
| Transmission | Gear box: 4-speed Final Drive: chain |
| Brakes | Front: expanding brake (drum brake) Rear: expanding brake (drum brake) |
| Front Tire | 3-19 |
| Rear Tire | 3-19 |
| Wheelbase | 50.59 inches (1285 mm) |
| Dimensions | L 80.31 inches (2040 mm) W 30.71 inches (780 mm) H 37.4 inches (950 mm) |
| Weight | 317.47 pounds (144.0 Kg) |
| Fuel capacity | 2.91 Gallon (11.00 Liters) |
| Oil capacity | 0.4 Gallon (1.50 Liters) |
| Fuel consumption | 2.30 liters/100 km (43.5 km/l or 102.27 mpg) |
| Manuals | Service Manual |
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The NSU 251 OSL WH was a single cylinder, four-stroke Road motorcycle produced by NSU between 1933 and 1941. It could reach a top speed of 59 mph (95 km/h). Claimed horsepower was 10.33 HP (7.7 KW) @ 5300 RPM.
Engine
The engine was a air cooled single cylinder, four-stroke. A 64.0mm bore x 75.0mm stroke result in a displacement of just 242.0 cubic centimeters.
Drive
The bike has a 4-speed transmission.
Chassis
It came with a 3-19 front tire and a 3-19 rear tire. Stopping was achieved via expanding brake (drum brake) in the front and a expanding brake (drum brake) in the rear. The 251 OSL WH was fitted with a 2.91 Gallon (11.00 Liters) fuel tank. The bike weighed just 317.47 pounds (144.0 Kg). The wheelbase was 50.59 inches (1285 mm) long.