BMW R 3
| Manufacturer | BMW |
|---|---|
| Production | 1937 |
| Class | Classic |
| Engine | air-cooled, four-stroke, single vertical cylinder |
| Bore / Stroke | 68.6mm x 68.6mm |
| Compression ratio | 6.0:1 |
| Horse Power | 11.0 HP (8.2 KW) @ 4200RPM |
| Transmission | Gear box: 4-speed, manual Final Drive: shaft |
| Suspension | Front: parallelogram fork Rear: hard-tail, sprung seat |
| Brakes | Front: 200mm drum Rear: 200mm drum |
| Front Tire | 3.50 x 26 |
| Rear Tire | 3.50 x 26 |
| Weight | (dry), 149.0 kg (wet) |
| Manuals | Service Manual |
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The BMW R 3 was a air-cooled, four-stroke, single vertical cylinder Classic motorcycle produced by BMW in 1937. Claimed horsepower was 11.0 HP (8.2 KW) @ 4200 RPM.
Engine
A 68.6mm bore x 68.6mm stroke result in a displacement of just 305.0 cubic centimeters.
Drive
The bike has a 4-speed, manual transmission. Power was moderated via the dry, single plate.
Chassis
It came with a 3.50 x 26 front tire and a 3.50 x 26 rear tire. Stopping was achieved via 200mm drum in the front and a 200mm drum in the rear. The front suspension was a parallelogram fork while the rear was equipped with a hard-tail, sprung seat.
1937 BMW R 3
The 1937 MY BMW R 3 has, at its heart, an air-cooled, four-stroke, 305cc, single vertical cylinder powerplant paired to a four-speed manual transmission, that can produce a claimed 11 horsepower at 4200 rpm. Standard features include laced wheels, a rigid rear suspension with a sprung seat, a parallelogram front fork, a large headlight, a taillight, a drum braking system and large fenders.