The South African type MY tender was a steam locomotive tender. Type MY tenders entered service in 1949 and 1950, as tenders to the Berkshire type branchline steam locomotives which entered service on the South African Railways in that year.South African Railways & Harbours/Suid Afrikaanse Spoorweë en Hawens (15 Aug 1941). ''Locomotive Diagram Book/Lokomotiefdiagramboek, 3'6" Gauge/Spoorwydte''. SAR/SAS Mechanical Department/Werktuigkundige Dept. Drawing Office/Tekenkantoor, Pretoria. pp. VIII, 46.South African Railways & Harbours/Suid Afrikaanse Spoorweë en Hawens (15 Aug 1941). ''Locomotive Diagram Book/Lokomotiefdiagramboek, 2'0" & 3'6" Gauge/Spoorwydte, Steam Locomotives/Stoomlokomotiewe''. SAR/SAS Mechanical Department/Werktuigkundige Dept. Drawing Office/Tekenkantoor, Pretoria. pp. VIII, 6a-7a, 28A, 46.

Manufacturer

Type MY tenders were built in 1949 by

North British Locomotive Company The North British Locomotive Company (NBL, NB Loco or North British) was created in 1903 through the merger of three Glasgow locomotive manufacturing companies; Sharp, Stewart and Company (Atlas Works), Neilson, Reid and Company (Hyde Park Wor ...

. The Class 24 2-8-4 Berkshire type steam locomotive was designed by Dr. M.M. Loubser, Chief Mechanical Engineer of the South African Railways (SAR) from 1939 to 1949, to replace the old Classes 6, 7 and 8 locomotives in branchline service on light rail in South Africa and especially in South West Africa. The Type MY entered service as tenders to these locomotives.Espitalier, T.J.; Day, W.A.J. (1947). ''The Locomotive in South Africa - A Brief History of Railway Development. Chapter VII - South African Railways (Continued).'' South African Railways and Harbours Magazine, May 1947. pp. 403-404.North British Locomotive Company works list, compiled by Austrian locomotive historian Bernhard Schmeiser

Characteristics

The tender had a coal capacity of , a water capacity of and a maximum axle loading of . Buckeye bogie

It was a tank wagon type tender, similar in appearance to the North American Vanderbilt type tender, with a cylindrical water tank which had an inside diameter of . The tender was similar to the Type MX tender, but its wheelbase was shorter. Like the Type MX tender, it rode on three-axle Buckeye bogies, supplied by

General Steel Castings General Steel Industries, Inc. (GSI) was an American steel company founded as General Steel Castings Corporation in 1928. The company's first headquarters were in Eddystone, Pennsylvania and, prior to completing its own modern steel foundry in ...

Eddystone, Pennsylvania Eddystone is a borough in Delaware County, Pennsylvania. The population was 2,410 at the 2010 census. History The area at the mouth of Ridley Creek was first called "Tequirassy" by Native Americans. The land was owned by Olof Persson Stille, o ...

, and became commonly known as a ''Torpedo'' tender. Like its engine, the tender was equipped with vacuum brakes.

Locomotive

Only the Class 24 locomotives were delivered new with Type MY tenders, which were numbered in the range from 3601 to 3700 for their engines. An oval number plate, bearing the engine number and often also the tender type, was attached to the rear end of the tenders.

Classification letters

Since many tender types are interchangeable between different locomotive classes and types, a tender classification system was adopted by the SAR. The first letter of the tender type indicates the classes of engines to which it could be coupled. The "M_" tenders could be used with the locomotive classes as shown, although in some cases, engine drawbars and intermediate emergency chains had to be replaced or adjusted to suit the target locomotive. * Class 12, Class 12A and Class 12B. * Class 14, Class 14A and

Class 14B Class or The Class may refer to: Common uses not otherwise categorized * Class (biology), a taxonomic rank * Class (knowledge representation), a collection of individuals or objects * Class (philosophy), an analytical concept used differently ...

. * Class 15 and Class 15A. * Class 16, Class 16A, Class 16B and Class 16C. *

Class 19 Class 19 may refer to: * Caledonian Railway 19 Class, 0-4-4T steam locomotives * Belgian Railways Class 19, electric locomotives * British Rail Class 19 Class 19 is the name given to an experimental railway locomotive that was constructed using ...

, Class 19A, Class 19B, Class 19C and Class 19D. * Class 20. * Class 24. * Class MC1, Class MH and Class MJ. * Class S2. The second letter indicates the tender's water capacity. The "_Y" tenders had a capacity of between . A number, when added after the letter code, indicates differences between similar tender types, such as function, wheelbase or coal bunker capacity.

Illustration

File:243696-Beaconsfield-1983-Apr-13-HGG.jpg, Type MY tender on Class 24, 1983 File:SAR Class 14R 1911 De Aar 150478.jpg, Type MY tender on Class 14A, 1978

References

{{Locomotives of South Africa MY