BMW R 50 S
Number sold 1.634
Price 3.535,- DM
| Engine | |
|
|
|
| Internal Designation | 252 / 3 |
| Engine type | four-stroke two-cylinder flat-twin |
| Bore/stroke | 68 x 68 mm |
| Cubic capacity | 494 cm3 |
| Max power | 35 PS at 7650 rpm |
| Compression ratio | 9,5 : 1 |
| Valves per cylinder | ohv |
| Carburation system | 2 carburettor Bing 1/26/71 - 1/26/72 |
| Engine lubrication | forced-feed lubrication |
| Oil pump | gear pump |
|
|
|
| Power transmission | |
|
|
|
| Clutch | single disc saucer spring, dry |
| Number of gears | 4 |
| Shifting | foot Shifting |
| Gear ratios | 4,17 / 2,73 / 1,94 / 1,54 |
| Rear wheel ratio | 1 : 3,58 (with sidecar 1 : 4,33) |
| Bevel/crown wheel | 7 / 25 (with sidecar 6 / 26) |
|
|
|
| Electrical system | |
|
|
|
| Alternator | Bosch LJ/CGE 60/6/1700 R |
| Ignition | magneto ignition |
| Spark plugs | Bosch W 260 T 1 or Beru 260 / 14 |
|
|
|
| Suspension | |
|
|
|
| Designation | 245/2 |
| Type of frame | twin-loop steel tubular frame |
| Front suspension | long swinging arm with strut und oil-pressure shock absorbers |
| Rear suspension | long swinging arm with strut und oil-pressure shock absorbers |
| wheel rims | deep-bed 2,15B x 18, at sidecar, rear 2,75C x 18 |
| Tyres front | 3,50 x 18 S |
| Tyres rear | 4,00 x 18 S |
| Brakes front | drum brake, Ø 200 mm Duplex full hub |
| Brakes rear | drum brake, Ø 200 mm Simplex full hub |
|
|
|
| Dimensions and weights | |
|
|
|
| Length x width x height | 2125 x 660 x 980 mm |
| Wheel base | 1415 mm (with sidecar 1450 mm) |
| Tank capacity | 17 l |
| Unladen weight, full tank | 198 kg (with orig. BMW sidecar 320 kg) |
| permitted gross vehicle weight | 360 kg (with orig. BMW sidecar 600 kg) |
| idle/riding noise | 84 / 82 DIN-phon |
| Fuel consumption | ca. 5,2 l / 100 km |
| Oil consumption | ca. 0,5 - 1 l / 1000 km |
| Top speed | 160 km/h |
|
|
|
| Back to index | |