The BMW R68 SDT Special is a motorcycle that was produced from 1952 to 1955. It features a four stroke, two cylinder horizontally opposed Boxer engine with a capacity of 594cc and a compression ratio of 8.0:1. The bike is air-cooled with 2 Bing carburetors and a magneto ignition. It has a maximum power output of 35 horsepower at 7000 rpm and a 4-speed transmission with a shaft final drive. The frame is a double-loop steel tubular frame, and the suspension is a telescopic front fork with hydraulic damping and a spring with coil compression in the rear. The front and rear brakes are both drum full hub with the front having a duplex design while the back is simplex. The wheels are equipped with 3.50 – 19″ tires, and the bike weighs 190 kg with a fuel capacity of 17 liters. The BMW R68 SDT Special is an iconic motorcycle due to its powerful engine and durable design.
Technical specifications:
Make Model: BMW R 68 SDT Special
| Year | 1952 – 55 |
|---|---|
| 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 | 8.0:1 |
| Cooling System | Air cooled |
| Induction | 2 x Bing 1/26/9 – 1/26/10 carburetors |
| Ignition | Magneto ignition |
| Starting | Kick |
| Clutch | Single plate, dry |
| Max Power | 26.1 kW / 35 hp @ 7000 rpm |
| Transmission | 4 Speed |
| Final Drive | Shaft |
| Gear Ratio | 1st 4.00 / 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″ |
| Wet-Weight | 190 kg / 422 lb |
| Fuel Capacity | 17 liters / 4.4 US gal |
