L&YR Hughes 4-6-4T

Lancashire & Yorkshire Railway Hughes 4-6-4T

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 4-6-4T
UIC class 2′C2′ h4t
Gauge 4 ft 8 12 in (1,435 mm)
Leading dia 3 ft 0 38 in (0.924 m)
Driver diameter 6 ft 3 in (1.905 m)
Trailing dia 3 ft 0 38 in (0.924 m)
Length 49 ft 10 12 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 m2)
Boiler LMS type ‘RS’
Boiler pressure 180 lbf/in2 (1.24 MPa)
Heating surface:
  Tubes and flues
1,817 sq ft (168.8 m2)
Superheater:
  Heating area
395–430 sq ft (36.7–39.9 m2)
Cylinders Four
Cylinder size 16 12 in × 26 in (419 mm × 660 mm)
Valve gear Walschaerts
Valve 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Withdrawn March 1938 – January 1942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

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".

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 8s 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

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