South African type EW2 tender

Technopedia Center

Faculty of Engineering and Computer Science
S1 Informatics S1 Information Systems S1 Information Technology S1 Computer Engineering S1 Electrical Engineering S1 Civil Engineering

faculty of Economics and Business
S1 Management S1 Accountancy

Faculty of Letters and Educational Sciences
S1 English literature S1 English language education S1 Mathematics education S1 Sports Education

South African type EW2 tender

From Wikipedia, the free encyclopedia

South African type EW2 tender

Type EW2 tender no. 3480, 5 October 2009

Type and origin
Locomotive	Class 25NC
Designer	South African Railways
Builder	South African Railways
In service	1973-1980
Rebuilt from	Type CZ
Rebuild date	1973-1980

Specifications
Configuration	3-axle bogies
Gauge	3 ft 6 in (1,067 mm) Cape gauge
Wheel dia.	34 in (864 mm)
Wheelbase	45 ft 10 in (13,970 mm)
• Bogie	10 ft (3,048 mm)
Fuel type	Coal
Fuel cap.	19 LT (19.3 t)
Water cap.	11,200 imp gal (50,900 L)
Stoking	Mechanical
Couplers	Drawbar & AAR knuckle

Career
Operators	South African Railways
Numbers	SAR 3452-3479, 3481-3510, 3512-3539
Nicknames	Worshond

The South African type EW2 tender was a steam locomotive tender.

Type EW2 tenders were rebuilt from Type CZ tenders which had entered service between 1953 and 1955 as steam condensing tenders to the Class 25 4-8-4 Northern type condensing steam locomotives. The tenders were stripped of their condensing equipment and fitted with huge water tanks when their engines were modified to Class 25NC non-condensing locomotives between 1973 and 1980.^[1]^[2]^[3]^[4]^[5]

Origin

[edit]

Altogether 90 Type CZ steam condensing tenders were built in 1953 by Henschel and Son and North British Locomotive Company as tenders to the Class 25 condensing steam locomotives. In 1963 one more was built by the South African Railways (SAR). The design work on the locomotive's condensing apparatus and the Type CZ condensing tender was carried out by Henschel, who held the patent.^[2]^[3]^[6]^[7]

Rebuilding

[edit]

The Class 25 was a complex locomotive which required high maintenance, especially on the turbine blower fans in the smokebox, of which the blades needed to be replaced frequently due to damage by solid particles in the exhaust. The equally complex condensing tender also required frequent maintenance.^[1]

Between 1973 and 1980, after serving for twenty years and partially accelerated by the introduction of electric and diesel-electric traction over routes which were previously served exclusively by the Class 25, all but three of the Class 25 condensing locomotives, numbers 3451, 3511 and 3540, were converted to free-exhausting and non-condensing locomotives and reclassified to Class 25NC. Their Type CZ condensing tenders were rebuilt to regular coal and water tenders. Since these tenders often migrated between engines during overhauls, the fleet numbers as shown are those of the rebuilt engines and are not necessarily correct for the tenders.^[1]^[8]

The first conversion was done at Beaconsfield on no. 3452. The tender was stripped of its condensing equipment, but retained its original fresh water and condensate tanks and feed pumps, with the result that the boiler would now be fed with cold water, apparently with none of the ill effects which had been predicted earlier. The radiator framing and roof were panelled over. The locomotive's general appearance therefore changed little, but while the conversion of its tender was aesthetically superior when compared with subsequent conversions, it did not carry enough water.^[5]^[9]

Salt River Shops rebuild plate

The rest of the fleet was rebuilt at the Salt River shops in Cape Town at a rate of about fifteen per year. On these tenders, the condensing radiators and roof fans were removed and replaced with a massive round-topped water tank. The shape and appearance of the converted tender was dictated by strength rather than aesthetic considerations. It was considered to shorten the tender's cast water-bottom frame, but it was eventually retained as it was. To replicate the Class 25NC's Type EW1 tender tank and bunker on the much longer Type CZ water-bottom frame would have exceeded the permissible axle loading by a considerable amount.^[1]^[2]^[3]^[5]

The long cast steel frame of the tender was very flexible, but the radiator framing and roof had contributed a great deal to the vertical stiffness. The final form of the tender tank supplied enough strength, with its semi-circular top welded to the original fresh water tank via the fan supports and the long triangular gussets set into the bunker sides which extended past the midpoint of the frame. Locomotives with these rebuilt tenders were soon nicknamed Worshond, Afrikaans for dachshund and literally translated as sausage dog. The Worshond tenders were designated Type EW2.^[1]^[2]^[5]

Characteristics

[edit]

The Type EW2 tender rode on three-axle bogies with roller bearings and was as long as the engine itself. The brake riggings of its bogies were independent of each other and only the front bogie was equipped with a hand brake. Almost one-third of the total length of the tender was taken up by the coal bunker, with a capacity of 19 long tons (19.3 tonnes), while the D-shaped tank had a water capacity of 11,200 imperial gallons (50,900 litres). The mechanical stoker equipment had a maximum delivery rate of 12,000 pounds (5,443 kilograms) of coal per hour.^[6]^[7]^[10]

Classification letters

[edit]

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 can be coupled. The "E_" tenders were arranged with mechanical stokers and could be used with the locomotive classes as shown.^[11]

Class 15F, if equipped with a mechanical stoker.
Class 23.
Class 25NC.
Class 26.

The second letter indicates the tender's water capacity. The "_W2" tenders had a capacity of 11,200 imperial gallons (50,900 litres; 13,500 US gallons).^[11]

A number, when added after the letter code, indicates differences between similar tender types, such as function, wheelbase or coal bunker capacity.^[11]

Illustration

[edit]

Type EW2 Worshond on Class 25NC, 17 September 2009
Type EW2 Worshond on Class 25NC, 20 October 2009

References

[edit]

^ ^a ^b ^c ^d ^e Durrant, AE (1989). Twilight of South African Steam (1st ed.). Newton Abbott: David & Charles. pp. 107–109. ISBN 0715386387.
^ ^a ^b ^c ^d Sabatini, Richard (2006). South African Locomotive Tender Classification, Compatibility & Allocation (1st ed.) Richard Sabatini, Kimberley, January 2006. pp. 21, 38
^ ^a ^b ^c Condenser fitter Albie Bester's reminiscences
^ Information supplied by Phil Girdlestone
^ ^a ^b ^c ^d SAR-L Group Message #44177 by Phil Girdlestone on 10 November 2012. Does Anyone know where these were....^{[dead link‍]} (Accessed on 23 July 2016)
^ ^a ^b Holland, D. F. (1972). Steam Locomotives of the South African Railways. Vol. 2: 1910-1955 (1st ed.). Newton Abbott, England: David & Charles. pp. 108–111. ISBN 978-0-7153-5427-8.
^ ^a ^b Paxton, Leith; Bourne, David (1985). Locomotives of the South African Railways (1st ed.). Cape Town: Struik. pp. 10–11, 77–78. ISBN 0869772112.
^ Soul of A Railway, System 1, Part 4: Touws River to Beaufort West. Introduction par 6. (Accessed on 27 November 2016)
^ SAR-L Group Message #32783 by Phil Girdlestone on 26 July 2010. A question about a class 25 converted.^{[dead link‍]} (Accessed on 23 July 2016)
^ Wardale, David (Uitlander) (1970). "Big Boy" of the Narrow Gauge - The S.A.R.'s "25" Class. Railway Digest International, Volume 1, No. 1, 1970. pp. 2-5.
^ ^a ^b ^c 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.

South African steam locomotive tenders

Cape gauge

Type FT

Type GT

Type HT

Type KT

Type LP

Locomotives of South Africa

Steam

7' ¼" gauge	East London 0-4-0VB Table Bay 0-4-0ST Table Bay 0-4-0T Table Bay 0-4-0WT
Standard gauge	Cape 0-4-0T Blackie Cape 0-4-2 Cape 2-4-0T CGR 0-4-0ST Aid Natal 0-4-0ST Durban Natal 0-4-0WT Natal Natal 4-4-0T Perseverance
Cape gauge Tank engines	CGR 0-4-0ST 1873 CGR 0-4-0ST 1874 CGR 0-4-0ST 1881 CGR 0-4-0ST 1881 Coffee Pot CGR 0-6-0ST CGR 0-6-0T CGR 2-6-0ST 1900 CGR 2-6-0ST 1902 CGR 1st Class 0-4-0ST 1875 CGR 1st Class 0-4-0ST 1876 CGR 1st Class 2-6-0ST CGR 1st Class 4-4-0T CGR 2nd Class 4-4-0T CGR 3rd Class 2-6-0T CGR Railmotor CSAR Class C CSAR Class E CSAR Rack 4-6-4RT CSAR Railmotor Durban's Congella Durban's Edward Innes Durban's John Milne Durban's Sir Albert Port Elizabeth 0-4-0ST Kowie Railway 0-6-0T Kowie Railway 4-4-0T Metropolitan & Suburban 4-6-2T NGR 2-6-0T Durban & Pietermaritzburg NGR Class I 2-6-2T NGR Class K 0-4-0ST NGR Class K 0-6-0ST NGR Class K 2-6-0T NZASM 10 Tonner NZASM 13 Tonner NZASM 14 Tonner NZASM 18 Tonner NZASM 19 Tonner NZASM 32 Tonner NZASM 40 Tonner PPR 26 Tonner PPR 35 Tonner Portuguese SAR Class A SAR Class B SAR Class C SAR Class C1 SAR Class C2 SAR Class D SAR Class E SAR Class F SAR Class G SAR Class H SAR Class H1 SAR Class H2 SAR Class J SAR Class K SAR Railmotor SAR Dock 0-4-0ST SAR Dock 0-4-0T SWA 2-8-0T
Cape gauge Tender engines	CGR 1st Class 2-6-0 1876 BP CGR 1st Class 2-6-0 1876 Kitson CGR 1st Class 2-6-0 1879 CGR 1st Class 2-6-0 1891 CGR 1st Class 4-4-0 CGR 1st Class 4-4-0TT CGR 2nd Class 2-6-2TT CGR 3rd Class 4-4-0 1883 CGR 3rd Class 4-4-0 1884 CGR 3rd Class 4-4-0 1889 CGR 3rd Class 4-4-0 1898 CGR 3rd Class 4-4-0 1901 CGR 3rd Class 4-4-0 1903 CGR 4th Class 4-4-2 CGR 4th Class 4-6-0TT 1880 CGR 4th Class 4-6-0TT 1882 CGR 4th Class 4-6-0TT 1882 Joy CGR 4th Class 4-6-0TT 1884 CGR 5th Class 4-6-0 1890 CGR 5th Class 4-6-0 1891 NGR Havelock NGR Class I SAR Class Exp 1 SAR Class Exp 2 SAR Class Exp 3 SAR Class Exp 4 SAR Class Exp 5 SAR Class Exp 6 SAR Class S SAR Class S1 SAR Class S2 SAR Class 1 SAR Class 1A SAR Class 1B SAR Class 2 SAR Class 2C SAR Class 3 SAR Class 3A SAR Class 3B SAR Class 4 SAR Class 4A SAR Class 5 SAR Class 5A SAR Class 5B SAR Class 6 SAR Class 6A SAR Class 6B SAR Class 6C SAR Class 6D SAR Class 6E SAR Class 6F SAR Class 6G SAR Class 6H SAR Class 6J SAR Class 6K SAR Class 6L SAR Class 6Y SAR Class 6Z SAR Class 7 SAR Class 7A SAR Class 7B SAR Class 7C SAR Class 7D SAR Class 7E SAR Class 7F SAR Class 8 SAR Class 8A SAR Class 8B SAR Class 8C SAR Class 8D SAR Class 8E SAR Class 8F SAR Class 8R SAR Class 8X SAR Class 8Y SAR Class 8Z SAR Class 9 SAR Class 10 SAR Class 10A SAR Class 10B SAR Class 10C SAR Class 10D SAR Class 11 SAR Class 12 SAR Class 12A SAR Class 12B SAR Class 13 SAR Class 14 SAR Class 14A SAR Class 14B SAR Class 14C 1st SAR Class 14C 2nd SAR Class 14C 3rd SAR Class 14C 4th SAR Class 15 SAR Class 15A SAR Class 15B SAR Class 15C SAR Class 15CA SAR Class 15E SAR Class 15F SAR Class 16 SAR Class 16A SAR Class 16B SAR Class 16C SAR Class 16D SAR Class 16DA 1928 SAR Class 16DA 1930 SAR Class 16E SAR Class 17 SAR Class 18 SAR Class 19 SAR Class 19A SAR Class 19B SAR Class 19C SAR Class 19D SAR Class 20 SAR Class 21 SAR Class 23 SAR Class 24 SAR Class 25 SAR Class 25NC SAR Class 26 SAR Katanga SWA 2-8-0
Cape gauge Articulated engines	CGR Fairlie CGR Kitson-Meyer SAR Class FC SAR Class FD SAR Class GA SAR Class GB SAR Class GC SAR Class GCA SAR Class GD SAR Class GDA SAR Class GE SAR Class GEA SAR Class GF SAR Class GG SAR Class GH SAR Class GK SAR Class GL SAR Class GM SAR Class GMA SAR Class GO SAR Class HF SAR Class KM SAR Class MA SAR Class MB SAR Class MC SAR Class MC1 SAR Class MD SAR Class ME SAR Class MF SAR Class MG SAR Class MH SAR Class MJ SAR Class MJ1 SAR Class U
2' 6" gauge	Cape Copper John King & Miner Cape Copper Britannia Cape Copper Caledonia Cape Copper Clara Cape Copper Condenser Cape Copper Scotia Namaqua Copper Pioneer Walvis Bay 2-4-2T Hope
2' & 600mm gauges	ACR Class NG-G16A CGR NG 0-4-0T CGR NG 0-6-0T CGR NG 4-6-2T CGR Type A 2-6-4T CGR Type C 0-4-0T NGR Class N 4-6-2T SAR Dutton SAR NG 0-4-0T SAR Class NG1 SAR Class NG2 SAR Class NG3 SAR Class NG4 SAR Class NG5 SAR Class NG6 SAR Class NG7 SAR Class NG8 SAR Class NG9 SAR Class NG10 SAR Class NG-G11 SAR Class NG-G12 SAR Class NG-G13 SAR Class NG-G14 SAR Class NG15 SAR Class NG-G16 SWA Class Ha SWA Class Hb SWA Class Hc SWA Class Hd SWA Jung SWA Zwillinge

Electric

Amcoal Class E38

Gas-electric

SAR Gas-electric

Diesel

Cape gauge Diesel–electric	PRASA Class Afro 4000 SAR Class DS SAR Class DS1 SAR Class 31-000 SAR Class 32-000 SAR Class 32-200 SAR Class 33-000 SAR Class 33-200 SAR Class 33-400 SAR Class 34-000 SAR Class 34-200 SAR Class 34-400 SAR Class 34-500 SAR Class 34-600 SAR Class 34-800 SAR Class 34-900 SAR Class 35-000 SAR Class 35-200 SAR Class 35-400 SAR Class 35-600 TFR Class 35-800 SAR Class 36-000 SAR Class 36-200 SAR Class 37-000 Spoornet Class 39-000 TFR Class 39-200 TFR Class 43-000 TFR Class 44-000 TFR Class 45-000
2' gauge Diesel–electric	SAR Class 91-000
Cape gauge Diesel–hydraulic	SAR Class 61-000
Cape gauge Electro-diesel	Spoornet Class 38-000

Retrieved from "https://en.wikipedia.org/w/index.php?title=South_African_type_EW2_tender&oldid=1192194386"

Category:

Steam locomotive tenders of South Africa

Hidden categories: