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Can I get replacement or alternative transfers for my model?Read more -
What was the Mainline Railways company?Read moreMainline Railways was a British model railway brand that operated between 1976 and 1983, introduced by Palitoy, the...
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What is a Wickham Trolley?Read moreA Wickham Trolley is a small railway maintenance vehicle once widely used across Britain's railways. Built by D...
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What was the Bachmann 'Blue Riband' subbrand ?Read moreThe Blue Riband subbrand was a significant step in the evolution of Bachmann Branchline, the UK division of Bachmann...
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Do I need to apply a camber to a tight curve of track on my layout?Read moreApplying a camber to a tight curve of track on your model railway layout can help improve the realism and operation...
.jpg "What is a 'Crab' steam locomotive?")
What is a 'Crab' steam locomotive?
The name 'Crab' is a nickname given to a type of 2-6-0, mixed-traffic, steam locomotive built by the LMS between 1926 and 1932. In total 245 Crabs were produced at Horwich and Crewe works and were considered to be a successful design of locomotive being good all-round performers, especially in Scotland where they often hauled heavy mineral trains.
The Crab was designed by LMS' Chief Mechanical Engineer 'George Hughes' and tinkered with a little by his successor 'Henry Fowler' before production. Crabs were recognisable thanks to their slanting cylinders which was not an intended design, but necessary to fit the English loading gauge.
Crabs were advanced for their years, featuring technology such as long-travel valves and compensated brakes and provided successful traction for 40 years eventually being withdrawn between 1961 and 1967.
The origin of the Crab's unusual name is somewhat speculative, the most common theories relate to the pincer-like motion of the valve gear or the waddling sensation felt from the footplate said to resemble a crab's walk.
Crab's had a few official names through their lifespan including the 'LMS Hughes Crab' the 'Horwich Mogul' and a later design introduced in 1933 with a tapered boiler being known as an 'LMS Stanier Mogul'. Today, only three Crabs survive in preservation.
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