BMW R51/3
< BMW R51
A 1952 R51/3 – note the half-width brakes before 1954 | |
| Manufacturer | BMW |
|---|---|
| Production | 1951-5 |
| Engine | 494cc four-stroke flat-twin |
| Bore / stroke | 68 mm × 68 mm (2.68 in × 2.68 in) |
| Compression ratio | 6.3:1 |
| Top speed | 140 km/h |
| Power | 24 hp |
| Ignition type | Magneto |
| Transmission | Single-plate dry clutch, 4-Speed manual |
| Suspension | Front telescopic forks, rear plunger |
| Brakes | 200mm drums |
| Wheelbase | 1400mm |
| Dimensions | L: 2130mm W: 790mm H: 985mm |
| Weight | 190 kg (wet) |
| Fuel capacity | 17 L |
| Oil capacity | 2 L |
| Fuel consumption | 4.5L/100KM |
The BMW R51/3 was BMW's second post-World War II 500 cc motorcycle, following the briefly produced R51/2. It featured a flat-twin engine and exposed drive shaft. In 1951, the R51/3 succeeded and modernized the 1950 R51/2, which was essentially a pre-war design that was produced after the war. The 600 cc R67, R67/2, and R67/3 series and the more sporting R68 model also followed the R51/2.