LMS Fowler 2-6-4T

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LMS Fowler 4P 2-6-4T
LMS suburban 2-6-4T locomotive, 2300 (CJ Allen, Steel Highway, 1928).jpg
2300, circa. 1928
Type and origin
Power typeSteam
Designer Sir Henry Fowler
BuilderLMS Derby Works
Build date1927–1934
Total produced125
Specifications
Configuration:
   Whyte 2-6-4T
   UIC 1′C2′ h2pt
Leading dia. 3 ft 3+12 in (1.003 m)
Driver dia.5 ft 9 in (1.753 m)
Trailing dia. 3 ft 3+12 in (1.003 m)
Wheelbase 38.5 ft (11.73 m)
Length47 ft 2+34 in (14.40 m)
Loco weight86.25 long tons (87.6 t; 96.6 short tons)
Fuel type Coal
Fuel capacity3.5 long tons (3.6 t; 3.9 short tons)
Water cap.2,000 imp gal (9,100 L; 2,400 US gal)
Firebox:
  Firegrate area
25 sq ft (2.3 m2)
BoilerLMS type G8AS
Boiler pressure200  lbf/in2 (1.38  MPa) superheated
Heating surface:
  Tubes and flues
1,082 sq ft (100.5 m2)
  Firebox138 sq ft (12.8 m2)
Superheater:
  Heating area266 sq ft (24.7 m2) or 246 sq ft (22.9 m2)
Cylinders Two, outside
Cylinder size 19 in × 26 in (483 mm × 660 mm)
Performance figures
Tractive effort 23,125 lbf (102.87 kN)
Career
Operators
Power class
  • LMS: 4P
  • BR: 4MT
Numbers
  • LMS: 2300–2424
  • BR: 42300–42424
Withdrawn1959–1966
DispositionAll scrapped, new build planned.

The London, Midland and Scottish Railway (LMS) Fowler 2-6-4T was a class of steam locomotive passenger tank engine designed by Henry Fowler.

Contents

Construction

42421 at Hibel Road station in 1959 - this is one of the Fowler 4MTs with later style side window cabs. Hibel road railway station geograph-2197415.jpg
42421 at Hibel Road station in 1959 - this is one of the Fowler 4MTs with later style side window cabs.

125 examples of the class were built. The last 30 numbered 2395 to 2424 were fitted with side-windows and doors to their cabs. [1] The LMS classified them 4P, BR 4MT. They were the basis for a family of subsequent LMS/BR Class 4 2-6-4T locomotives.[ citation needed ] The Irish Northern Counties Committee (NCC) Class W 2-6-0 moguls were also strongly influenced by this class, albeit the driving wheel diameter was three inches greater to match the NCC practice. [2]

The cylinder and piston valve design and the setting of the Walschaerts valve gear, allowing a maximum travel of 6+38 inches (16 cm) in full gear, was believed by O. S. Nock to subsequently lead to the "outstanding success" of the class. [2]

Operational use

Most of the class were used on longer-distance commuter trains from stations in London, Manchester and other large towns.[ citation needed ] A number were allocated to Tebay Motive Power Depot and were used to bank heavy passenger and goods trains up the steep incline to Shap on the LMS West Coast Main Line. Some operated on the long trip from Shrewsbury to Swansea (Victoria).[ citation needed ] The last two surviving locos were withdrawn from service in 1966. 42389 was hauling the Tring to Euston commuter train that was hit in the rear at Harrow and Wealdstone on 8 October 1952 by a Perth to Euston express. 112 people died in the accident. 42389 was undamaged.[ citation needed ]

Despite coupled wheels of only 5 feet 9 inches (1.75 m) diameter the class was sometimes noted as achieving over 80 miles per hour (130 km/h) on outer suburban services to and from Euston. [2]

Numbering

42367 at Willesden 45552 Silver Jubilee and 42367 Fowler 2-6-4T at Willesden (cropped to Fowler tank).jpg
42367 at Willesden

The LMS numbered the class 2300–2424, BR adding 40000 to their numbers to make them 42300–424. [1]

Table of orders
LMS no.BR no.Lot no.Date built
2300–230342300–42303471927
2304–232442304–42324471928
2325–237442325–42374531929
2375–238442375–42384891932
2385–242342385–424231011933
2424424241011934

Preservation and revival

No locos were preserved, but the January 2013 edition of The Railway Magazine reported that a new-build project to recreate a Fowler 2-6-4T was at an initial research stage.

In May 2015, the LMS-Patriot Project announced that after the completion of Patriot Class No. 45551 The Unknown Warrior, it would begin construction on a new-build Fowler 2-6-4T. Similar to the Patriot, it will carry the number of the last member of the class, No. 42424, and be built to main line running standards, though it will only primarily be used on heritage lines. [3]

One of the NCC Class WT locos (No. 4), which drew heavily from the Fowler design and were the last steam locomotives withdrawn in Northern Ireland, is preserved by the Railway Preservation Society of Ireland. No. 4 returned from overhaul in June 2015 and is currently based in Dublin.[ citation needed ]

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References

  1. 1 2 Ian Allan abc British Railways Locomotives 1960
  2. 1 2 3 Nock, O.S. (1983). Irish Steam. David & Charles. pp. 176–177. ISBN   0715379615.
  3. "LMS-Patriot Company announces plans to build a new Fowler 2-6-4T after 'The Unknown Warrior' is completed". LMS-Patriot Project. 21 March 2015. Retrieved 22 March 2015.