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British Railway History Item

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BR Class Riddles British Railways Standard Class 4 2-6-4 Tank

Built 1951-57. Designed by Robert A. Riddles.

Total Number Built 155.

Introduced 1951. Designed at Brighton. Classification 4MT.

Number Series 80000-80154.

Built at British Railway's Brighton, Derby and Doncaster Works:

80000-80009, 80054-80058 Derby
80010-80053, 80059-80105, 80116-80154 Brighton
80106-80115 Doncaster

No Lot Nos. yet available.

First outshopped from Brighton works in July 1951, 155 of these locomotives were built in Brighton, Derby and Doncaster works between then and 1957 and became general workhorses on all the regions of British Railways, except the Western. Not things of beauty with their somewhat unattractive "rear ends", they were a product of the development by British Railways of a series of twelve "Standard" locomotive designs embracing the best practices of the pre-nationalisation railways.

Designed by Robert A Riddles, British Railways' Chief Mechanical Engineer, these tanks were one of the most successful of the "Standards", doing well all that was asked of them.

The Standard 4s shared much of the basic design of the LMS Railway's Class 4 2-6-4Ts built under both Stanier and Fairburn (some of the latter locos were built at Brighton after nationalisation) but with considerable improvements. They had smaller cylinders and higher pressure boilers, were more economical in operation and were popular with footplate crews for their better running and improved cab facilities.

Classified as 4MT on the Eastern, Midland, and Scottish Regions, their Southern classification was 4P/4F. Most were to be found working on the Central and South Western sections of the Southern Region, the LTSR lines of the Eastern Region and the Glasgow commuter lines in Scotland.

When the LTSR lines were electrified many of the displaced Standard 4s were transferred in July 1962 to Shrewsbury, in the Western Region, who then lost them again to the Midland Region during the boundary changes that took effect from 1 January 1963. In the same boundary changes the Western Region was handed all of the Southern Region west of Salisbury, also inheriting the locomotives based in that area, including Standard 4Ts. However, the mainly dieselised Western Region seemed determined to send them to the scrapyards as quickly as they could either get their hands on DMUs to replace them, or close down the lines where they worked.

The first loco withdrawn was 80040 on 6 May 1964 from Exmouth Junction shed.
The last eleven locos withdrawn were 80011, 80134 and 80146 from Bournemouth shed; 80015, 80085, 80133, 80139, 80140 and 80143 from Nine Elms Shed; 80016 and 80152 from Eastleigh shed on 9 July 1967 towards the end of steam on the Southern region.

Fifteen locos are preserved - 80002, 80064, 80072, 80078, 80079, 80080, 80097, 80098, 80100, 80104, 80105, 80135, 80136, 80150 and 80151.

Motive Power Details
Weight: Loco 88 tons 10 cwt
Water Capacity: 2,000 gals
Coal Capacity: 3? tons
Driving Wheel: 5' 8"
Pony Wheels: 3 ft
Trailing Wheels: 3 ft
Boil Press: 225lb/sq in Su
Cylinders: Two 18" x 28" (outside)
Valve Gear: Walschaerts (piston valves)
TE: 25,100 lb
Length: 44 ft 9 7/8 ins
Route Availability: 5
Number Series

Class Total: 155

80000
80001
80002
80003
80004
80005
80006
80007
80008
80009
80010
80011
80012
80013
80014
80015
80016
80017
80018
80019
80020
80021
80022
80023
80024
80025
80026
80027
80028
80029
80030
80031
80032
80033
80034
80035
80036
80037
80038
80039
80040
80041
80042
80043
80044
80045
80046
80047
80048
80049
80050
80051
80052
80053
80054
80055
80056
80057
80058
80059
80060
80061
80062
80063
80064
80065
80066
80067
80068
80069
80070
80071
80072
80073
80074
80075
80076
80077
80078
80079
80080
80081
80082
80083
80084
80085
80086
80087
80088
80089
80090
80091
80092
80093
80094
80095
80096
80097
80098
80099
80100
80101
80102
80103
80104
80105
80106
80107
80108
80109
80110
80111
80112
80113
80114
80115
80116
80117
80118
80119
80120
80121
80122
80123
80124
80125
80126
80127
80128
80129
80130
80131
80132
80133
80134
80135
80136
80137
80138
80139
80140
80141
80142
80143
80144
80145
80146
80147
80148
80149
80150
80151
80152
80153
80154

Allocation and Withdrawal Details


Last Updated : Sunday 9th December 2012 06:38

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