South African type MS tender

The South African type MS tender was a steam locomotive tender.

South African type MS tender
Type MS tender on SAR Class 19, c. 1928
Type and origin
LocomotiveClass 19
DesignerSouth African Railways
(Col F.R. Collins DSO)
BuilderBerliner Maschinenbau
In service1928
Specifications
Configuration2-axle bogies
Gauge3 ft 6 in (1,067 mm) Cape gauge
Length25 ft 11+38 in (7,909 mm)
Wheel dia.34 in (864 mm)
Wheelbase16 ft 9 in (5,105 mm)
 • Bogie4 ft 7 in (1,397 mm)
Axle load14 LT 14 cwt (14,940 kg)
 • Front bogie28 LT 16 cwt (29,260 kg)
 • Rear bogie29 LT 8 cwt (29,870 kg)
Weight empty55,504 lb (25,176 kg)
Weight w/o58 LT 4 cwt (59,130 kg)
Fuel typeCoal
Fuel cap.11 LT (11.2 t)
Water cap.5,000 imp gal (22,700 L)
StokingManual
CouplersDrawbar & AAR knuckle
Career
OperatorsSouth African Railways
NumbersSAR 1366–1369

Type MS tenders entered service in 1928, as tenders to the Class 19 4-8-2 Mountain type branchline steam locomotives which were placed in service by the South African Railways in that year.[1][2][3]

Manufacturer

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Type MS tenders were built in 1928 by Berliner Maschinenbau in Germany.[1]

The South African Railways (SAR) placed four Class 19 4-8-2 Mountain type branchline locomotives in service in 1928. The engines and tenders were designed under the direction of Col F.R. Collins DSO, Chief Mechanical Engineer of the SAR, by Research and Test Engineer M.M. Loubser, himself later to be appointed as CME. The locomotives were placed in service on the line between Kimberley and Vryburg, but they eventually spent their later working years at Empangeni and on the Bergville branch in Natal. The Type MS entered service as tenders to these locomotives.[1][4][5]

Characteristics

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The tender had a coal capacity of 11 long tons (11.2 tonnes), a water capacity of 5,000 imperial gallons (22,700 litres) and a maximum axle load of 14 long tons 14 hundredweight (14,940 kilograms).[2][3]

Locomotive

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Only the four Class 19 locomotives were delivered new with Type MS tenders, which were numbered for their engines in the range from 1366 to 1369. An oval number plate, bearing the engine number and often also the tender type, was attached to the rear end of the tender.[1][3]

Classification letters

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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.[3]

The second letter indicates the tender's water capacity. The "_S" tenders had a capacity of 5,000 imperial gallons (22,700 litres; 6,000 US gallons).[3]

References

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  1. ^ a b c d Holland, D. F. (1972). Steam Locomotives of the South African Railways. Vol. 2: 1910-1955 (1st ed.). Newton Abbott, England: David & Charles. pp. 57–58. ISBN 978-0-7153-5427-8.
  2. ^ a b 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. p. 45.
  3. ^ a b c d e 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. 6a-7a, 26, 45.
  4. ^ Espitalier, T.J.; Day, W.A.J. (1946). The Locomotive in South Africa - A Brief History of Railway Development. Chapter VII - South African Railways (Continued). South African Railways and Harbours Magazine, Jul 1946. pp. 541-543.
  5. ^ Paxton, Leith; Bourne, David (1985). Locomotives of the South African Railways (1st ed.). Cape Town: Struik. pp. 10–11, 69–70. ISBN 0869772112.