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R3
Model Documentation
Model Specifications | |
|---|---|
| Drivetrain | |
| Displacement | 494cc |
| Cylinders | 2 |
| Bore x Stroke (mm) | 68 x 68 |
| HP @ RPM | 8.5 @ 3200 |
| Compression Ratio | 5.0:1 |
| Valves | Sidevalve, 2 per cylinder |
| Clutch | Dry, single plate, cable operated |
| Transmission | 3 speed, hand shifted |
| Final Drive | Driveshaft |
| Running Gear | |
| Frame | Tubular, brazed double loop |
| Front Suspension | Undamped, trailing link, dual leaf spring |
| Rear Suspension | Rigid |
| Front Brakes | 150mm drum, single leading shoe (early models had no front brakes) |
| Rear Brakes | V-block pressed into dummy rim sheave, heel operated |
| Electrical | |
| Ignition | Bosch magneto |
| Spark Plugs | Bosch W145 |
| Generator | Bosch magneto/generator |
| Capacities & Measurements | |
| Weight | 122kg |
| Fuel | 14l |
| Wheelbase | 1380mm |
| Top Speed | 95kph |
| Number Produced | 3090 |
The information provided here was obtained from a variety
of public sources and may not reflect official BMW archival data.
Please contact the BMW Archives for official data
regarding models.