Alder Motorcycles

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1951-1953 Adler M200


Air cooled two-stroke twin 195cc B/S 48 x 54mm
Compression ratio 5.75:1
Amal 19E1L carburettor
multi-plate clutch in oil bath
two ignition coils

Power: 9.3 HP @ 5250 rpm

Lubrication: 25:1 petroil mixture.

Fuel consumption: 2.9 litres/100k @ 64 km/h


    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: 101 km/h

Weight: 135 kg (1953) - increased by 10kg the following year.

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

Brakes: 150mm x 30mm internal expanding drum.

Tyres: 3.25 x 16" front and rear.

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

Frame: double cradle steel tube with sidecar attachment points.

Fuel tank: rubber mounted 12 litre with 3 litre reserve.

Rear suspension: telescopic spring dampers.

Front suspension: leading link with integral damping.

Electrical system: 6 volt 60 watt dynamo

Steering lock.

Lockable toolbox in tank.

Adjustable steering damper.

Enclosed rear chain.

Folding rear guard.

Dual silencers with removable baffles .