BMW R 2 Series 1: history, specs, pictures
| BMW R 2 Series 1 | |
| Manufacturer | |
|---|---|
| Production | 1931 |
| Engine | single cylinder, four-stroke |
| Bore / Stroke | 63.0mm x 64.0mm |
| Top Speed | 59 mph (95 km/h) |
| Horsepower | 5.9 HP (4.4 KW) @ 3500RPM |
| Fuel System | carburetor. sum carburetor 19 mm |
| Ignition | battery ignition |
| Transmission | Gear box: 3-speed Final Drive: shaft drive (cardan) |
| Suspension | Front: cantilever spring, 9 laminae Rear: rigit |
| Brakes | Front: expanding brake (drum brake) Rear: expanding brake (drum brake) |
| Front Tire | 3.00-25 |
| Rear Tire | 3.00-25 |
| Wheelbase | 51.97 inches (1320 mm) |
| Length | 76.77 inches (1950 mm) |
| Weight | 268.96 pounds (122.0 Kg) (dry), |
| Fuel Capacity | 2.91 Gallon (11.00 Liters) |
| Fuel Consumption | 2.75 liters/100 km (36.4 km/l or 85.53 mpg) |
| Manuals | Service Manual |
The BMW R 2 Series 1 was a single cylinder, four-stroke standard produced by BMW in 1931. It could reach a top speed of 59 mph (95 km/h). Claimed horsepower was 5.9 HP (4.4 KW) @ 3500 RPM.
Engine
The engine was a air cooled single cylinder, four-stroke. A 63.0mm bore x 64.0mm stroke result in a displacement of just 198.0 cubic centimeters. Fuel was supplied via a overhead valves (ohv).
Drive
The bike has a 3-speed transmission. Power was moderated via the single-plate, dry.
Chassis
It came with a 3.00-25 front tire and a 3.00-25 rear tire. Stopping was achieved via expanding brake (drum brake) in the front and a expanding brake (drum brake) in the rear. The front suspension was a cantilever spring, 9 laminae while the rear was equipped with a rigit. The R 2 Series 1 was fitted with a 2.91 Gallon (11.00 Liters) fuel tank. The bike weighed just 268.96 pounds (122.0 Kg). The wheelbase was 51.97 inches (1320 mm) long.