1943 BMW R75 specification :
Start of Production | 1941 | |
| End of Production | 1944 | |
| Numbers Produced | 18,000 approx. | |
| Price | 2,630 RM | |
| Engine |
| |
| Internal Designation | 275/2 | |
| Motor Type | Four-stroke two cylinder flat twin | |
| Bore x Stroke | 78 x 78 mm (3.07 x 3.07 in) | |
| Displacement | 745 cc | |
| Max Power | 26 hp at 4,000 rpm | |
| Compression Ratio | 5.8 : 1 | |
| Valves | OHV | |
| Carburation System | 2 x carburettor type Graetzin Sa 24/1 and Sa 24/2 | |
| Engine Lubricating System | Forced feed lubrication | |
| Oil Pump | Gear pump | |
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| Power Transmission |
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| Clutch | Single plate, dry | |
| Number of Gears | "Road": 4 + 1 reverse gear, "off-road": 3 + 1 reverse gear | |
| Shifting | Foot and manual shifting with selector lever "off-road" + "road" | |
| Gearbox Ratios | "Road": 3.22 / 1.83 / 1.21 / 0.90, reverse gear 2.41, "off-road": 4.46 / 2.54 /1.67, reverse gear 3.3 | |
| Rear Wheel Ratio | 1 : 6.05 (from production No. 754056 1 : 5.69) | |
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| Electrical System |
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| Ignition System | Magneto ignition | |
| Generator | Noris DS 6/50 | |
| Spark Plugs | Bosch W 175 T1 | |
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| Chassis |
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| Designation | 275/1 | |
| Frame | Multi part, bolted steel tubular frame | |
| Front wheel suspension | Telescopic fork | |
| Rear wheel suspension | Rigid, plate springs on the boat, tube springs on sidecar wheel | |
| Wheel rims | 3D x 16 | |
| Tyres, Front | 4.5 x 16 (off road block profile) | |
| Tyres, Rear | 4.5 x 16 (off road block profile) | |
| Brakes, Front | Drum brake 250 mm / 9.84 in diameter, mech. | |
| Brakes, Rear | Drum brake 250 mm / 9.84 in diameter, mech; sidecar drum brakes 250 mm / 9.84 in diameter, hydraulic | |
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| Dimensions/Weights |
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| Length x Width x Height | 2400 x 1730 x 1000 mm (94.48 x 68.11 x 39.37 in) (with sidecar) | |
| Wheel Base | 1444 mm / 56.85 in | |
| Fuel Tank Capacity | 24 litres / 5.27 gal / 6.34 gal US | |
| Unladen Weight with Full Tank | 400 Kg / 881 lb with original sidecar | |
| Load Rating | 270 Kg / 594 lb | |
| Fuel Consumption | Approx. 6.3 litres per 100 Km / 44 mpg / 37 mpg US (road), 8.5 litres per 100 Kph / 33 mpg / 27 mpg US (off-road) | |
| Oil Consumption | Approx. 0.5 - 1 litre per 1,000 Km | |
| Top Speed | 95 Kph / 59 mph | |
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BMW
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