L&YR Hughes 4-6-4T

The Lancashire and Yorkshire Railway Hughes 4-6-4T was a class of steam locomotives. They were a 4-6-4T tank engine version of the L&YR Class 8 ("Dreadnought" Class 4-6-0), hence they were known as "Dreadnought tanks".

Lancashire & Yorkshire Railway Hughes 4-6-4T
11114 in photographic grey
Type and origin Power type Steam Designer George Hughes Builder LMS Horwich Works Order number Horwich Lot 82 LMS Lot No. 2 Serial number Horwich 1354–1363 Build date March – August 1924 Total produced 10
Specifications Configuration: ​  • Whyte 4-6-4T  • UIC 2′C2′ h4t Gauge 4 ft 8 ^1⁄2 in (1,435 mm) Leading dia. 3 ft 0 ^3⁄8 in (0.924 m) Driver dia. 6 ft 3 in (1.905 m) Trailing dia. 3 ft 0 ^3⁄8 in (0.924 m) Length 49 ft 10 ^1⁄2 in (15.20 m) Loco weight 99.95 long tons (101.55 t) Fuel type Coal Fuel capacity 3.50 long tons (3.56 t) Water cap 2,000 imp gal (9,100 l; 2,400 US gal) Firebox:  • Firegrate area 29.5 sq ft (2.74 m^2) Boiler LMS type ‘RS’ Boiler pressure 180 lbf/in^2 (1.24 MPa) Heating surface:  • Tubes and flues 1,817 sq ft (168.8 m^2) Superheater: ​  • Heating area 395–430 sq ft (36.7–39.9 m^2) Cylinders Four Cylinder size 16 ^1⁄2 in × 26 in (419 mm × 660 mm) Valve gear Walschaerts Valve type Piston valves Train brakes Vacuum
Performance figures Tractive effort 28,880 lbf (128.5 kN)
Career Operators London, Midland and Scottish Railway Power class 5P Numbers 11110–11119 Nicknames Dreadnought tank Withdrawn March 1938 – January 1942 Disposition All scrapped

Construction

All were actually built by the London, Midland and Scottish Railway in 1924 after the grouping, albeit at the Lancashire and Yorkshire Railway's Horwich Works.

Numbering

They had been allocated L&Y numbers 1684–1693, but these were never carried and there was no L&YR class number. The LMS gave them the numbers 11110–11119, and the power classification 5P.

Orders modified or cancelled

Another 20 of this class were ordered but turned out as further examples of the L&YR Class 8. Orders for an additional 30 were cancelled. Like the Class 8 on which they were based, they were not particularly successful.

Withdrawal

Withdrawals started in 1938, with three engines (11112, 11115, 11116), one each in 1939 and 1940 (11113 and 11111 respectively), four in 1941 (11114, 11117–11119) and the last (11110) in January 1942. None was preserved.

References

• Baxter, Bertram (1982). Baxter, David (ed.). British Locomotive Catalogue 1825–1923, Volume 3B: Lancashire and Yorkshire Railway and its constituent companies. Ashbourne, Derbyshire: Moorland Publishing Company. p. 94. ISBN 0-903485-85-0.
• Casserley, H. C. & Johnston, Stuart W. (1974) [1966]. Locomotives at the Grouping 3: London, Midland and Scottish Railway. Shepperton, Surrey: Ian Allan. ISBN 0-7110-0554-0.
• Rowledge, J.W.P. (1975). Engines of the LMS built 1923–51. Oxford: Oxford Publishing Company. ISBN 0-902888-59-5.