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Beyer-Garratt

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description Beyer-Garratt Overview

The Beyer-Garratt is a type of articulated steam locomotive developed from Herbert William Garratt's 1907 design and manufactured under licence by Beyer, Peacock and Company. Its boiler and cab sit on a central frame carried between two powered engine units, each with its own driving wheels. This arrangement combines high tractive effort with a lower axle load and the ability to negotiate curves, making the type useful on narrow-gauge or lightly built railways. Beyer-Garratts worked in several countries on routes carrying heavy freight or long passenger trains.

help Beyer-Garratt FAQ

What is the unusual layout of a Beyer-Garratt locomotive?

Its boiler and cab sit on a central frame carried between two powered engine units. Each engine unit has its own driving wheels, allowing the locomotive to carry substantial fuel and water while remaining articulated. [Science and Industry Museum](https://www.scienceandindustrymuseum.org.uk/objects-and-stories/beyer-peacock)

Who designed the Beyer-Garratt?

Herbert William Garratt developed and patented the articulated design in 1907. Beyer, Peacock and Company then worked with him on developing and manufacturing the type. [Science Museum Group](https://collection.sciencemuseumgroup.org.uk/people/cp37311/herbert-william-garratt)

Why were Beyer-Garratts useful on difficult railways?

The two engine units let a Garratt negotiate sharper curves than a rigid locomotive of comparable power while distributing weight across more wheels. The central boiler arrangement also leaves room for large water and fuel tanks.

Was Beyer-Garratt a single locomotive model?

No. Beyer-Garratt is a locomotive type built in many gauges and configurations for railways around the world. Its defining feature is the articulated two-engine-unit layout, not one fixed wheel arrangement or one railway operator.

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