LMS Fowler Class 4F

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LMS Fowler Class 4F
Stockport 2 railway geograph-2189845.jpg
44444 at Stockport, 1950
Type and origin
Power typeSteam
Designer Henry Fowler
Builder
Build date1924–1941
Total produced575
Specifications
Configuration:
   Whyte 0-6-0
   UIC C h2
Gauge 4 ft 8+12 in (1,435 mm) standard gauge
Driver dia.5 ft 3 in (1.600 m)
Length52 ft 0+18 in (15.853 m)
Loco weight48.75 long tons (49.53 t; 54.60 short tons)
Tender weight41.20 long tons (41.86 t; 46.14 short tons)
Fuel type Coal
Fuel capacity4 long tons (4.1 t; 4.5 short tons)
Water cap.3,500 imp gal (16,000 L; 4,200 US gal)
Firebox:
  Grate area21 sq ft (2.0 m2)
BoilerLMS type G7S
Boiler pressure175  lbf/in2 (1.21  MPa)
Heating surface:
  Firebox124 sq ft (11.5 m2)
  Tubes and flues1,034 sq ft (96.1 m2)
Superheater:
  Heating area252 sq ft (23.4 m2) later 246 sq ft (22.9 m2)
Cylinders Two, inside
Cylinder size 20 in × 26 in (508 mm × 660 mm)
Valve gear Stephenson
Valve type piston valves
Loco brake Vacuum
Train brakes Vacuum
Performance figures
Tractive effort 24,555 lbf (109.23 kN)
Career
Operators
Power class4F
Numbers
  • LMS: 4027–4606
  • BR: 44027–44606
Axle load classBR: Route Availability 5
Locale London Midland Region
Withdrawn1959–1966
Disposition3 preserved, remainder scrapped
An earlier view of 44458, this time passing Water Orton. 44458 Water Orton.jpg
An earlier view of 44458, this time passing Water Orton.

The London, Midland and Scottish Railway (LMS) Fowler Class 4F is a class of 0-6-0 steam locomotive designed for medium freight work. They represent the ultimate development of Midland Railway's six coupled tender engines. Many trainspotters knew them as "Duck Sixes", a nickname derived from their wheel arrangement. [1]

Contents

Background

The 4F was based on the 197-strong Midland Railway 3835 Class of 1911, with only a few modifications, primarily the adoption of left-hand drive instead of right-hand drive. They originally had been designed by Henry Fowler, who from 1925 became CME of the LMS.

Midland Railway locomotives were notorious for their short axle-box bearings, which were prone to overheating. This design feature was perpetuated in the LMS 4F. The problem was eventually solved with the fitting of mechanical lubricators.[ citation needed ]

Construction

4129 with number on the tender, pre-1928 LMS 0-6-0 freight locomotive, 4129 (CJ Allen, Steel Highway, 1928).jpg
4129 with number on the tender, pre-1928

The LMS constructed 530 of the locomotives between 1923 and 1928, numbered sequentially from where the Midland engines left off from 4027. A further 45 examples were reluctantly authorised by William Stanier in 1937 at the behest of the operating department.

Construction table
LMS nos.BR nos.Lot No.Date builtBuilt by
4027–403444027–4403471924 Derby
4035–405644035–4405671925 Derby
4057–408144057–4408181925 North British Loco
4082–410644082–4410691925 Kerr Stuart
410744107101924 Crewe
4108–415844108–44158101925 Crewe
4159–417644159–44176101926 Crewe
4177–417844177–44178111924 St. Rollox
4179–420644179–44206111925 St. Rollox
4207–421644207–44216291925 Derby
4217–428744217–44287291926 Derby
4288–430144288–44301291927 Derby
4302–431144302–44311281926 Crewe
4312–432244312–44322301927 St. Rollox
4323–433144323–44331301928 St. Rollox
4332–434244332–44342311926 Kerr Stuart
4343–435644343–44356311927 Kerr Stuart
4357–436144357–44361321926 Andrew Barclay
4362–438144362–44381321927 Andrew Barclay
4382–439944382–44399331926 North British Loco
4400–440644400–44406331927 North British Loco
4407–443644407–44436421927 Derby
4437–444644437–44446431927 Crewe
4447–445644447–44456431928 Crewe
4457–446644457–44466441928 Horwich
4467–447644467–44476451928 St. Rollox
4477–450644477–44506461927 North British Loco
4507–455644507–44556561928 Crewe
4562–457544562–445751371937 Crewe
4577–458644577–445861461939 Derby
4587–459644587–445961471939 Derby
4597–460444597–446041471940 Derby
4605–460644605–446061471941 Derby

The missing numbers (4)4557–61 relate to five locomotives built for the Somerset and Dorset Joint Railway to the Midland Railway 3835 Class design in 1922, and taken into LMS stock in 1930.

All entered British Railways stock in 1948. BR added 40000 to their numbers. They were all withdrawn between 1959 and 1966.

Accidents and incidents

Withdrawal

Withdrawals from stock occurred between 1959 and 1966.

Preservation

Preserved 44422 pulls into Holt station on the North Norfolk Railway. 44422 on freight.jpg
Preserved 44422 pulls into Holt station on the North Norfolk Railway.

Three LMS-built 4Fs survive, with the first-built LMS 4F, No. (4)4027, being part of the National Collection.

NumbersBuiltBuilderWithdrawnService LifeLocationImageCondition
LMSBR
402744027Nov 1924 Derby Works Nov 196440 Years Vale of Berkeley Railway [4]
4F 44027 at Swanwick 1.jpg
Overhaul in progress following the loco's arrival at Sharpness.
412344123Jul 1925 Crewe Works Jun 196539 Years, 11 months Avon Valley Railway 44123 built Crewe August 1925 at the Avon Valley Railway (15717346165).jpg Restoration in progress.
442244422Oct 1927Derby WorksJun 196537 Years, 8 months Churnet Valley Railway [5] 44422 on the demolition train - geograph.org.uk - 1181740.jpg Under overhaul. Returned to the CVR in December 2019 following the termination of its previous loan agreement with the West Somerset Railway.

Models

The 4F has been modelled by Lima (O gauge, HO gauge and British N gauge) and Graham Farish (British N Gauge, still produced under the Bachmann label). Airfix produced a tender drive model of the 4F in OO gauge in 1978. Production of this was continued by Dapol after it acquired Airfix models in 1985, and were subsequently sold to Hornby in the late 1990s. They upgraded the model with an improved chassis in 2012. [6] Bachmann have produced a version of the Midland railway variant of the 4F since 2012.

References

  1. Platforms Souls (Chap.1), Whittaker, Nicholas, Gollancz, London, 1995
  2. Earnshaw, Alan (1991). Trains in Trouble: Vol. 7. Penryn: Atlantic Books. p. 22. ISBN   0-906899-50-8.
  3. 1 2 Earnshaw, Alan (1990). Trains in Trouble: Vol. 6. Penryn: Atlantic Books. pp. 27, 39. ISBN   0-906899-37-0.
  4. "4F 4027". Vale of Berkeley Railway. Retrieved 18 May 2017.
  5. Holden, Michael (3 December 2019). "Steam locomotive 44422 arrives at the Churnet Valley Railway". RailAdvent. Retrieved 3 December 2019.
  6. Wild, Mike (May 2012). "Hornby upgrades Fowler '4F'". Hornby Magazine. No. 59. Hersham: Ian Allan Publishing. pp. 80–81. ISSN   1753-2469. OCLC   226087101.
Sources

Further reading