3MT  77000 – 77019  2-6-0  BR Standard Class 3

77000.jpg

Power Classification 3MT
Introduced 1954
Designer Riddles, designed at Swindon
Company BR
Weight – Loco 57t 9cwt
               Tender 42t 3cwt
Driving Wheels 5ft 3ins
Boiler Pressure 200psi superheated
Cylinders Outside – 17½6n x 26in
Tractive Effort 21,490lbf
Valve Gear Walschaert (piston valve)

These locomotives were built as a tender version of the 82000 3MT class, designed for working on virtually any main or secondary line throughout Britain. They had a boiler based on the GWR Swindon boiler fitted to the GWR 5101 and 5600 class locomotives. The chassis were closely based on and sharing a number of parts with the LMS Ivatt 43000 class 4.

 77000.jpg 77000 class introduced in 1954
 43000 small LMS 43000 class designed by Ivatt introduced in 1947
 82000 82000 class introduced in 1952
 5101 small GWR 5101 class designed by Churchward introduced in 1903
 5600 small GWR 5600 class designed by Collett introduced in 1924

Both the tender version (77000 class) and tank version (82000 class) were all built at Swindon. The tank engine version was introduced in April 1952 whilst the first tender engines was completed in February 1954. The tank engines were more numerous with 45 being built compared to only 20 of the tender engines. There had been plans to build a further five members of the 77000 class engines but the order was later cancelled.

Unlike a number of the larger BR Standards the exhaust steam manifold within the smokebox saddle was a steel fabrication that was part of the welded saddle. In a number of the large BR standards (BR Standard class 6 and class 7 engines) the exhaust steam manifold was a steel casting welded into the saddle during manufacture.

They were fitted with BR2A 3,500 gallon tenders.

Number in Service.

Built Withdrawals

No. in Service

1954

       20

        20

1955-64

        20

1965

          1

        19

1966

        16

          3

1967

          3

          0

 

Allocation of locomotives in service as at 1st of January.

Depot byRegion

1955 1958 1962 1964 1965 1966

1967

North Eastern
Blaydon

2

Darlington

3

1

1

Farnley Junction

2

Goole

1

Hull Botanical Gardens

2

Hull Dairycoates 3

1

Hull Springhead

1

Manningham

2

Scarborough

2

South Byth

2

Stourton 5 4

3

Tweedmouth 2

2

West Auckland

7

2 2

2

Whitby

2

York 1

2

10

10 10 10 8 7

2

Scottish
Carstairs

1

Grangemouth 2

2

Hamilton

3

3

1

Hurlford

5

5 5 6 6

6

Motherwell 2 2

4

Polmadie

2

2

3

10

10 10 10 10

10

London Midland
Northwich 2

2

Southern
Guildford

1

20

20 20 20 20 19

3

77014 ended its working life at Guildford in July 1967 having previously been based at North Eastern and London Midland Region depots as set out below.

Date Arrived Depot
July 1954 Darlington
October 1955 Whitby
June 1956 Blaydon
October 1959 Gateshead
September 1960 Tyne Dock
April 1961 South Blyth
October 1962 Thornaby
September 1963 Stourton
November 1964 Northwich
April 1966 Guildford

The tank engine version (82000 class) were initially mainly based at Western Region (27) and Southern Region (14) depots with a few (4) starting life on the North Eastern Region. Some of the Western Region locomotives moved to the London Midland Region when the control of Machynlleth depot was transferred in September 1963.

77013-Stourton-May 1966.jpg

77013-Stourton-may 1966a.jpg

77013 at Stourton-May 1966. This locomotive spent all of its working life on the North Eastern Region. It entered service at Darlington in July 1954 before moving on to Whitby, Leeds Neville Hill, Selby, York, Scarborough and York again before going to Stourton in September 1963. It was withdrawn from service there in March 1966.
77000 & 77003-Stourton-July 1966.jpg 77000 & 77003 at Stourton-July 1966. These two were always based on the North Eastern Region and ended up at Stourton in 1964.They were both withdrawn from service in December 1966. Stourton shed closed in January 1967.
77004 & 43044-Stourton-July 1966.jpg 77004 with 43004 at Stourton-July 1966. 77004 was based at ten North Easter Region sheds during its 12 year life.
77018 7 45274-Hurlford-July 1966.jpg 77018 with 45274 at Hurlford-July 1966. 77018 was based at Hurlford for all of its twelve years of service. It was withdrawn from service in November 1966.
77017-Kilmarnock-July 1966.jpg 77017 Kilmarnock-July 1966. This locomotive was based at Hurlford for all of its working life which lasted from August 1954 until November 1966.

New Build

None of the 20 locomotives which operated on BR metal have been preserved although some components were removed from engines whilst at scrapyards to build a new Standard class 3 2-6-2T.

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