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Adler Motorcycles

1955-1956 Adler MB280

Manufactured for the Austrian market

Specifications

Engine:
Air cooled two-stroke twin, 277cc, B/S 57.1 x 54mm
Compression ratio 5.7:1

Bing type 1/22 carburettor
multi-plate clutch in oil bath
two ignition coils

Power: 18 HP @ 5400 rpm

Lubrication: 25:1 petroil mixture.

Fuel consumption: 3.8 litres/100k @ 80 km/h

Gearbox

    4 speed with neutral indicator
    Oil capacity: 1.2 litres
    Gearshift lever on left side of engine
    Shift pattern: 4 up - neutral, 1st, 2nd, 3rd, 4th.
    1st gear = 2.80:1
    2nd gear = 1.53:1
    3rd gear = 1.11:1
    4th gear = 0.81:1
    primary drive = 3.44:1
    final drive = 2.0:1 (solo), 2.25:1 (sidecar)
    NB: All MB/MBS models have same gearbox and gear ratios.

Max speed: 117 km/h

Weight: 145 kg

Wheels: 1.85 x 16" steel rims, 36 spokes.

Brakes: 180mm x 30mm.

Tyres: 3.25x 16 front and rear.

Maximum all-up weight without sidecar: 295 kg; with sidecar: 420 kg.

Frame: double loop steel tube with sidecar attachment points.

Fuel tank: rubber mounted 15 litre with 3 litre reserve.

Rear suspension: adjustable progressive telescopic with hydraulic spring dampers.

Front suspension: leading link with integral damping.

Electrical system: 6 volt 90 watt dynamo.

Steering lock.

Lockable toolbox.
Adjustable steering damper.
Enclosed rear chain.
Folding rear guard.
Twin exhausts with removable baffles.



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