BMW R 50 / 5
Number sold 7.865
Price 3.696,- DM
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| Type | four-stroke, two-cylinder, horizontally-opposed "Boxer" engine, air-cooled |
| Bore/stroke | 67 x 70,6 mm |
| Cubic capacity | 498 cm3 |
| Max power | 32 PS (23,6 kW) at 6400 rpm |
| Compression ratio | 8,6 : 1 |
| Valves per cylinder | 2 |
| Valve control | ohv, using push rod and rocker arm |
| Carburation system | 2 slide carburettors, Bing 1/26/113 -1/26/114 |
| Engine lubrication | wet sump |
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| Power transmission | |
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| Clutch | dry single plate, with diaphragm spring |
| Number of gears | 4 |
| shifting | dog-type gearbox (ratchet foot lever) |
| Gear ratios | 3,896 / 2,578 / 1,875 / 1,50 : 1 |
| Rear wheel ratio | 1 : 3,56 |
| Bevel/crown wheel | 9 / 32 teeth |
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| Electrical system | |
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| Alternator | Bosch LJ/CGE 60/6/1700 R |
| Ignition | battery ignition |
| Starter | Bosch 0,5 PS (optional at additional charge) |
| Spark plugs | Bosch W 230 T 30 / Beru 230/14/3 A / Champion N 7 Y |
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| Suspension | |
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| Type of frame | double-loop tubular frame with bolt-on rear section |
| Front suspension | telescopic fork with hydraulic shock absorber |
| Rear suspension | long swinging arm with strut |
| Spring travel | 208 / 125 mm |
| Rims front | 1,85 B 19 |
| Rims rear | 1,85 B 18 or 2,15 B 18 |
| Tyres front | 3,25 S 19 |
| Tyres rear | 4,00 S 18 |
| Brakes front | Duplex-drum brake Ø 200 mm |
| Brakes rear | Simplex drum brake Ø 200 mm |
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| Dimensions and weights | |
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| Length x width x height | 2100 x 850 x 1040 mm (from 1973: 2150 x 850 x 1040 mm) |
| Wheel base | 1385 mm (from 1973: 1435 mm) |
| Ground clearance | 165 mm ( at 75 kg load) |
| Tank capacity | 24 l (from 1971: 17 l) |
| Unladen weight, full tank | 205 kg (from 1971: 200 kg) |
| Max permissible weight | 398 kg |
| Fuel consumption | 4,6 l / 100 km (at constant 90 km/h) |
| Acceleration | 0 - 100 km/h 10,2 s |
| Top speed | 157 km/h |
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