L&YR Hughes 4-6-4T

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Lancashire & Yorkshire Railway Hughes 4-6-4T
Hughes Dreadnought 4-6-4T, 11114 (Wonder Book of Engineering Wonders, 1931).jpg
Type and origin
Power typeSteam
Designer George Hughes
BuilderLMS Horwich Works
Order number
  • Horwich Lot 82
  • LMS Lot No. 2
Serial numberHorwich 1354–1363
Build dateMarch – August 1924
Total produced10
Specifications
Configuration:
   Whyte 4-6-4T
   UIC 2′C2′ h4t
Gauge 4 ft 8+12 in (1,435 mm)
Leading dia. 3 ft 0+38 in (0.924 m)
Driver dia.6 ft 3 in (1.905 m)
Trailing dia. 3 ft 0+38 in (0.924 m)
Length49 ft 10+12 in (15.20 m)
Loco weight99.95 long tons (101.55 t; 111.94 short tons)
Fuel typeCoal
Fuel capacity3.50 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 m2)
BoilerLMS type ‘RS’
Boiler pressure180 lbf/in2 (1.24 MPa)
Heating surface:
  Tubes and flues
1,817 sq ft (168.8 m2)
Superheater:
  Heating area395–430 sq ft (36.7–39.9 m2)
Cylinders Four
Cylinder size 16+12 in × 26 in (419 mm × 660 mm)
Valve gear Walschaerts
Valve typePiston valves
Train brakes Vacuum
Performance figures
Tractive effort 28,880 lbf (128.5 kN)
Career
Operators London, Midland and Scottish Railway
Power class5P
Numbers11110–11119
NicknamesDreadnought tank
WithdrawnMarch 1938 – January 1942
DispositionAll scrapped

The Lancashire and Yorkshire RailwayHughes 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".

Contents

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. No examples were preserved.

Related Research Articles

The London, Midland and Scottish Railway had the largest stock of steam locomotives of any of the 'Big Four' Grouping, i.e. pre-Nationalisation railway companies in the UK. Despite early troubles arising from factions within the new company, the LMS went on to build some very successful designs; many lasted until the end of steam traction on British Railways in 1968. For an explanation of numbering and classification, see British Rail locomotive and multiple unit numbering and classification.

George Hughes was an English locomotive engineer, and chief mechanical engineer (CME) of the Lancashire and Yorkshire Railway (L&YR) and the London, Midland and Scottish Railway (LMS).

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<span class="mw-page-title-main">Midland Railway 3835 Class</span>

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References