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Swiss Federal Railways Am 4/6

In 1938, BBC approached the SBB with the idea to build a locomotive that was powered by a gas turbine. The SBB agreed with the limitations that the six-axle locomotive should have a maximum weight of 92 tonnes and a t...

Swiss Federal Railways Am 4/6Remove
Variant
as built
Built 1938
Manufacturers SLM;BBC
Wheel arrangement (1A)Bo(A1)
Gauge 1435 mm
Length 16340 mm
Service mass 92400 kg
Top speed 110 km/h
Power
Engine

General

Property Swiss Federal Railways Am 4/6Remove
Built 1938
Manufacturers SLM, BBC
Wheel arrangement 1A-B-A1
Gauge 1,435 mm

Dimensions and weights

Property Swiss Federal Railways Am 4/6Remove
Length 16.34 m
Service mass 92.4 t
Adhesion mass 59 t
Axle load 14.8 t

Power plant

Property Swiss Federal Railways Am 4/6Remove
Engine type gas turbine

Power

Property Swiss Federal Railways Am 4/6Remove
Power source gas turbine-electric
Indicated power 1,618 kW (2,200 PS)
Top speed 110 km/h
Starting effort 127.0 kN

Calculated values

Property Swiss Federal Railways Am 4/6Remove
Factor of adhesion 1 : 4.56
Power-to-weight ratio 17.5 kW/t
Adhesive weight/Total 1 : 1.57
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