The Adler MB 250S is a 1955 motorcycle with a 2 cylinder, 2 stroke engine and a capacity of 247 cc. It has a kick start and a 6V, 6Ah battery with a 6 V 45/60 W ignition set, battery and coil. The carburetor is a single Bing carburetor, and the exhaust system is twin, steel, chrome. The motorcycle has a multi-plate clutch and a 4-speed gearbox housed in the engine block with a foot gearchange. The final drive is a chain that is fully enclosed. The frame is a double tubular frame with a sidecar adapter, and the front suspension is twin swinging leading link forks with a shock absorber and steering damper. The rear suspension has plunger shock absorbers that are adjustable for load and road conditions. The tires on both the front and back are 3.25 x 16 in., and the brakes are drums with a diameter of 180 mm. The motorcycle has a compression ratio of 1:6.6 and produces a maximum power of 13.1 kW / 18 hp at 5,590 rpm. Lubrication is achieved through a petrol oil mix at a ratio of 25:1.
Technical specifications:
Make Model: Adler MB 250S
| Year | 1955 |
|---|---|
| Engine | 2 cylinder, 2 stroke, flat-crowned pistons |
| Capacity | 247 cc / 15.1 cub in. |
| Bore x Stroke | 54 x 54 mm |
| Cooling | Air cooled |
| Lubrication | Petrol oil mix 25:1 |
| Clutch | Multi plate |
| Starting | Kick start |
| Battery | 6V, 6Ah |
| Ignition | 6 V 45/60 W ignition set, battery and coil |
| Carburetor | Single Bing carburetor |
| Exhaust System | Twin, steel, chrome |
| Max Power | 13.1 kW / 18 hp @ 5590 rpm |
| Compression Ratio | 1: 6.6 |
| Clutch | Multi disc in oil bath |
| Transmission | 4 Speed gearbox housed in engine block, foot gearchange |
| Final Drive | Chain, fully enclosed |
| Frame | Double tubular frame with sidecar adapter. |
| Front suspension | Twin swinging leading link forks with shock absorber and steering damper |
| Rear suspension | Plunger shock absorbers, adjustable for load and road conditions |
| Tyres (front and back) | 3.25 x 16 in. |
| Brakes (front and back) | Drums, 180 mm diameter |
