Adler MB 250 (1955)

The Adler MB 250 was a motorcycle produced in 1955 with a 2 cylinder, 2 stroke engine that had a capacity of 247cc. It used a petrol oil mix for lubrication and had a multi-disc wet clutch with kick start. The bike had a 4-speed gearbox housed in the engine block with a foot gearchange and a chain final drive that was fully enclosed. The frame was a double tubular design with a sidecar adapter and the front suspension featured twin swinging leading link forks with shock absorbers and a steering damper. The rear suspension used plunger shock absorbers that were adjustable for load and road conditions. The bike weighed 135 kg dry and 145 kg wet with a fuel capacity of 12 L and a reserve of 3.8 L. It had an average consumption of 3.6 L/100 km and a top speed of 116 km/h. The Adler MB 250 was available in black, metal green, and blue.

Technische Daten:

Make Model: Adler MB 250

Year: 1955

Engine: 2 cylinder, 2 stroke, flat-crowned pistons
Hubraum: 247 ccm / 15,1 cub in.
Bohrung x Hub: 54 x 54 mm
Kühlung: Luftgekühlt
Lubrication: Petrol oil mix 25:1
Clutch: Multi disc, wet
Starten: Kickstart
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: 11.8 kW / 16 hp @ 5590 rpm
Compression Ratio: 1: 5.75
Kupplung: Mehrscheiben im Ölbad
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
Dimensions: Length 1968 mm / 77.5 in. Width 650 mm / 25.6 in. Height 935 mm / 36.8 in.
Wheelbase: 1257 mm / 49.5 in.
Trockengewicht: 135 kg / 298 lbs
Nassgewicht: 145 kg / 320 lbs
Kraftstoffkapazität: 12 L / 3,2 US gal
Reserve: 3.8 L / 1 US gal
Average Consumption: 3.6 l/100 km / 27.8 km/l / 65.3 US mpg
Top Speed: 116 km/h / 72 mph
Colours: Black, Metal Green, Blue
Source: Wikipedia,,,

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