The BMW R 67/3 is a motorcycle model that was produced between 1955 to 1956. It features a four-stroke, two-cylinder horizontally opposed Boxer engine, with a capacity of 594 cc and a compression ratio of 6.2:1. The bike is air-cooled and has a magneto ignition, with starting being done through a kick start. The clutch is a single-plate, dry design, with power being delivered through a 4-speed transmission and a shaft final drive system. The frame is a double loop steel tubular design, with telescopic front suspension and a rear suspension that utilizes a spring and coil compression springs.
The BMW R 67/3 comes equipped with 200mm drum duplex full hub brakes in the front, and 200mm drum simplex full hub brakes at the rear. It has a wet weight of 192 kg or 422 lb, and a fuel tank capacity of 17 liters or 4.4 US gallons. The bike has a front and rear tire size of 3.50-19″, with the rear tire size being increased to 4.00 x 18″ when equipped with a sidecar. With a sidecar attached, the bike’s weight increases to 320 kg or 704 lbs. Overall, the BMW R 67/3 is a classic motorcycle that is notable for its unique horizontally opposed engine design and sleek, vintage styling.
Technical specifications:
Make Model: BMW R 67/3
| Year | 1955-56 |
|---|---|
| Engine | Four stroke, two cylinder horizontally opposed Boxer, pushrod operated 2 valves per cylinder. |
| Capacity | 594 cc / 36.2 cu in |
| Bore x Stroke | 72 x 73 mm |
| Compression Ratio | 6.2:1 |
| Cooling System | Air cooled |
| Induction | 2 x Bing 1/24/25 – 1/24/26 carburetors |
| Ignition | Magneto ignition |
| Starting | Kick |
| Clutch | Single plate, dry |
| Max Power | 20.9 kW / 28 hp @ 5600 rpm |
| Transmission | 4 Speed |
| Final Drive | Shaft |
| Gear Ratio | 1st 4.0 / 2nd 2.28 / 3rd 1.7 / 4th 1.3 |
| Frame | Double loop steel tubular frame |
| Front Suspension | Telescopic front fork with hydraulic damping; plunger type |
| Rear Suspension | Spring with coil compression springs and rubber deflection stops |
| Front Brakes | 200mm Drum duplex full hub |
| Rear Brakes | 200mm Drum simplex full hub |
| Front Tyre | 3.50 -19″ |
| Rear Tyre | 3.50 -19″ (sidecar, rear 4.00 x 18″) |
| Wet-Weight | 192 kg / 422 lb (with sidecar, 320 kg / 704 lbs) |
| Fuel Capacity | 17 liters / 4.4 US gal |
