Lancashire & Yorkshire 2-4-2 Locomotives in Great_Britain

Class 5 (Locobase 3212)

Data from "Tank Locomotive for the Lancashire & Yorkshire Railway", Railroad and Engineering Journal, Volume 64, No 11 (November 1890), pp. 496-497; and "L&YR Class 5" in Wikipedia at [], last accessed 12 February 2023. (Thanks to Alexander Blessing for his 5 February 2023 email providing the RREJarticle cited above.)

John Aspinall introduced these tank engines, which, says Glover (1967), "performed work which might well have seemed impossible for engines of such relatively small dimensions." Some batches had 17 1/2" (445 mm) diameter cylinders. The first 210 locomotives used short frames; beginning in 1898, the frames allowed for more water and coal storage. Engine weight increased to 132,500 lb (61,000 kg).

Hughes's batches (produced 1904 and later) used Belpaire fireboxes and extended smokeboxes.

According to David Fryer, in his submission to Bryan Attewell ([] locomotive simulator -- [] (July 2001) all of these tanks became LMS engines in the mid-1920s and 105 survived to work for British Rail after World War II. Data supplemented and corrected by article in November 1890 RREJ.

Class 6 (Locobase 2309)

Data from Ahrons (1927); "L&YR Class 5" in Wikipedia at [], last accessed 12 February 2023; and "Railway Notes - Lancashire & Yorkshire", Locomotive Magazine, Volume 18, No 239 (15 July 1912), p.

George Hughes superheated 46 of Aspinall's 2-4-2Ts and produced 18 more with Belpaire fireboxes and extended smokeboxes. The data given by Ahrons show a very high boiler demand factor. LM's report shows a slightly larger boiler heating surface area that does little to reduce this ratio. On the other hand, the firebox heating surface is considerable, cylinder diameter increased by 2 1/2" (63.75 mm), and larger big-end bearings. .

According to David Fryer, in his submission to Bryan Attewell ([] locomotive simulator -- [] (July 2001) -- the class endured for quite some time. After a derailment showed the folly of using a tank engine for high-speed mainline service, they soldiered on in secondary roles. All became LMS engines in the mid-1920s and 8 served British Railways after World War II.

The last of the class retired in 1961.