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South African Class 8C 4-8-0

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1903 design of steam locomotive

CSAR Class 8-L3 4-8-0
South African Classes 8C & 8CW 4-8-0

CSAR Class 8-L3 483, SAR Class 8C 1174, c. 1910

Type and origin
♠ Original locomotive, as built ♥ Superheated, outside admission valves ♣ Superheated, inside admission valves, Class 8CW
Power type	Steam
Designer	Cape Government Railways (H.M. Beatty)
Builder	North British Locomotive Company
Serial number	15803-15832
Model	CGR 8th Class (4-8-0)
Build date	1903
Total produced	30

Specifications
Configuration:
• Whyte	4-8-0 (Mastodon)
• UIC	♠ 2'Dn2 –♥♣ 2'Dh2
Driver	2nd coupled axle
Gauge	3 ft 6 in (1,067 mm)Cape gauge
Leading dia.	28+1⁄2 in (724 mm)
Coupled dia.	48 in (1,219 mm)
Tender wheels	33+1⁄2 in (851 mm) as built 34 in (864 mm) retyred
Wheelbase	46 ft10+1⁄2 in (14,288 mm)
• Engine	23 ft 3 in (7,087 mm)
• Leading	6 ft (1,829 mm)
• Coupled	13 ft 6 in (4,115 mm)
• Tender	14 ft 7 in (4,445 mm)
• Tender bogie	4 ft 7 in (1,397 mm)
Length:
• Over couplers	54 ft 5 in (16,586 mm)
Height	♠ 12 ft 10 in (3,912 mm) ♥♣ 12 ft 8 in (3,861 mm)
Frame type	Bar
Axle load	♠ 11 LT 17 cwt (12,040 kg) ♥ 12 LT (12,190 kg) ♣ 12 LT 11 cwt (12,750 kg)
• Leading	♠ 12 LT 5 cwt (12,450 kg) ♥♣ 12 LT 15 cwt (12,950 kg)
• Coupled	♥ 12 LT (12,190 kg)
• 1st coupled	♠ 11 LT 11 cwt (11,740 kg) ♣ 11 LT 18 cwt (12,090 kg)
• 2nd coupled	♠ 11 LT 17 cwt (12,040 kg) ♣ 12 LT 11 cwt (12,750 kg)
• 3rd coupled	♠ 11 LT 11 cwt (11,740 kg) ♣ 11 LT 19 cwt (12,140 kg)
• 4th coupled	♠ 11 LT 13 cwt (11,840 kg) ♣ 11 LT 18 cwt (12,090 kg)
• Tender bogie	Bogie 1: 18 LT 4 cwt (18,490 kg) Bogie 2: 19 LT 8 cwt (19,710 kg)
• Tender axle	9 LT 14 cwt (9,856 kg)
Adhesive weight	♠ 46 LT 12 cwt (47,350 kg) ♥ 48 LT (48,770 kg) ♣ 48 LT 6 cwt (49,080 kg)
Loco weight	♠ 58 LT 17 cwt (59,790 kg) ♥ 60 LT 15 cwt (61,720 kg) ♣ 61 LT 1 cwt (62,030 kg)
Tender weight	37 LT 12 cwt (38,200 kg)
Total weight	♠ 96 LT 9 cwt (98,000 kg) ♥ 98 LT 7 cwt (99,930 kg) ♣ 98 LT 13 cwt (100,200 kg)
Tender type	XF (2-axle bogies) XC,XC1,XD,XE,XE1, XF,XF1,XF2,XJ,XM,XM1,XM2,XM3 permitted
Fuel type	Coal
Fuel capacity	6 LT (6.1 t)
Water cap.	3,000 imp gal (13,600 L)
Firebox:
• Type	Round-top
• Grate area	♠♥♣ 21 sq ft (2.0 m²)
Boiler:
• Pitch	♠ 7 ft (2,134 mm) ♥♣ 7 ft 1 in (2,159 mm)
• Diameter	♠♥♣ 5 ft (1,524 mm)
• Tube plates	♠11 ft1⁄2 in (3,366 mm) ♥♣11 ft3⁄8 in (3,362 mm)
• Small tubes	♠205: 2 in (51 mm) ♥♣115: 2 in (51 mm)
• Large tubes	♥♣18:5+1⁄2 in (140 mm)
Boiler pressure	180 psi (1,241 kPa)
Safety valve	Ramsbottom
Heating surface:
• Firebox	♠ 130 sq ft (12 m²) ♥♣ 131 sq ft (12.2 m²)
• Tubes	♠ 1,184 sq ft (110.0 m²) ♥♣ 950 sq ft (88 m²)
• Total surface	♠ 1,314 sq ft (122.1 m²) ♥♣ 1,081 sq ft (100.4 m²)
Superheater:
• Heating area	♥♣ 214 sq ft (19.9 m²)
Cylinders	Two
Cylinder size	♠18+1⁄2 in (470 mm) bore ♥ 19 in (483 mm) bore ♣ 20 in (508 mm) bore ♠♥♣ 24 in (610 mm) stroke
Valve gear	Stephenson
Valve type	♠Slide ♥♣Piston
Couplers	Johnston link-and-pin AAR knuckle (1930s)

Performance figures
Tractive effort	♠ 23,100 lbf (103 kN) @ 75% ♥ 24,370 lbf (108.4 kN) @ 75% ♣ 27,000 lbf (120 kN) @ 75%

Career
Operators	Central South African Railways South African Railways
Class	CSAR Class 8-L3 SAR Classes 8C & 8CW
Number in class	30
Numbers	CSAR 471-500, SAR 1162-1191
Delivered	1903
First run	1903
Withdrawn	1972

The leading coupled axle had flangeless wheels

TheSouth African Railways Class 8C 4-8-0 of 1903 was a steam locomotive from the pre-Union era inTransvaal Colony.

In 1903, soon after the establishment of theCentral South African Railways, a second batch of thirty Cape 8th Class4-8-0 Mastodonsteam locomotives were ordered and placed in service as the Class 8-L3, immediately following upon a previous order in that same year for a variation on the same locomotive type. In 1912, when they were assimilated into the South African Railways, they were renumbered and designated Class 8C.^[1]^[2]^[3]

Manufacturer

[edit]

Upon the establishment of the Central South African Railways (CSAR) in July 1902, soon after the end of theSecond Boer War, Chief Locomotive Superintendent P.A. Hyde became the custodian of a mixed bag of locomotives inherited from the Imperial Military Railways (IMR). Apart from those engines which had been acquired new by the IMR during the war, these included locomotives which originated with the Selati Railway, theNederlandsche Zuid-Afrikaansche Spoorweg-Maatschappij (NZASM), the Pretoria-Pietersburg Railway (PPR) and theOranje-Vrijstaat Gouwerment Spoorwegen (OVGS).^[4]

The comparatively small number of serviceable locomotives which were immediately available for service, compounded by the poor condition of many of the original NZASM, PPR, Selati and OVGS locomotives and an expected post-war increase in traffic, led to an order for altogether sixty new steam locomotives. They were built in two versions to the specifications of the8th Class4-8-0 Mastodon type which had been designed by H.M. Beatty, the Chief Locomotive Superintendent of the Cape Government Railways (CGR) from 1896 to 1910.^[1]^[3]

Orders were placed withNeilson, Reid and Company in 1903, but while the locomotives were being built, Neilson, Reid amalgamated withDübs and Company andSharp, Stewart and Company to form theNorth British Locomotive Company (NBL). As a result, the thirty locomotives of the second batch, numbered in the range from 471 to 500, were all delivered as built by NBL at the Hyde Park shops of the former Neilson, Reid.^[1]^[3]^[5]

They differed from the first batch of the same order by not being equipped withDrummond water tubes in the fireboxes. To differentiate them from the Class 8-L1 and the Drummond tube-equipped Class 8-L2, these locomotives were designated the CSAR Class 8-L3. These were the last locomotives to be ordered by the CSAR which were built to the design of another railway.^[1]^[3]

Class 8 sub-classes

[edit]

When theUnion of South Africa was established on 31 May 1910, the three Colonial government railways (CGR,Natal Government Railways and CSAR) were united under a single administration to control and administer the railways, ports and harbours of the Union. Although the South African Railways and Harbours came into existence in 1910, the actual classification and renumbering of all the rolling stock of the three constituent railways were only implemented with effect from 1 January 1912.^[2]^[6]

In 1912, these thirty locomotives were renumbered in the range from 1162 to 1191 and designated Class 8C on the South African Railways (SAR).^[2]^[3]^[7]

These locomotives, together with the CSAR's Class 8-L1 and 8-L24-8-0 Mastodon locomotives and all the CGR's 8th Class2-8-0 Consolidations and4-8-0 Mastodons, were grouped into ten different sub-classes by the SAR. The4-8-0 locomotives became SAR Classes 8 and 8A to 8F and the2-8-0 locomotives became Classes 8X to 8Z.^[8]

Modification

[edit]

During A.G. Watson's term as the Chief Mechanical Engineer of the SAR from 1929 to 1936, many of the Class 8 to Class 8F locomotives were equipped with superheated boilers, larger bore cylinders and either inside or outside admission piston valves. The outside admission valve locomotives had their cylinder bore increased from18+1⁄2 inches (470 millimetres) to 19 inches (483 millimetres) and retained their existing SAR classifications, while the inside admission valve locomotives had their cylinder bore increased to 20 inches (508 millimetres) and were reclassified by having a "W" suffix added to their existing SAR classification letters.^[3]^[8]

Of the Class 8C locomotives, seven were equipped with superheating, 19 inches (483 millimetres) bore cylinders and outside admission piston valves while retaining their Class 8C classification.^[8]

Five locomotives were equipped with superheating, 20 inches (508 millimetres) bore cylinders and inside admission piston valves, and were reclassified to Class 8CW.^[8]

Service

[edit]

In SAR service, the4-8-0 Class 8 family of locomotives worked on every system in the country and, in the 1920s, became the mainstay of motive power on many branch lines. Their final days were spent in shunting service. They were all withdrawn from service by 1972.^[3]

Works numbers

[edit]

The Class 8C and 8CW works numbers, renumbering and superheating modifications are listed in the table.^[2]^[5]^[8]

**Class 8C & 8CW – Works numbers, renumbering and modification**
Works No.	CSAR No.	SAR No.	SAR Model
15803	471	1162
15804	472	1163
15805	473	1164	Superheated
15806	474	1165
15807	475	1166	Class 8CW
15808	476	1167
15809	477	1168
15810	478	1169
15811	479	1170	Superheated
15812	480	1171	Class 8CW
15813	481	1172
15814	482	1173
15815	483	1174
15816	484	1175
15817	485	1176
15818	486	1177
15819	487	1178	Superheated
15820	488	1179
15821	489	1180	Superheated
15822	490	1181	Class 8CW
15823	491	1182
15824	492	1183	Class 8CW
15825	493	1184	Superheated
15826	494	1185	Superheated
15827	495	1186
15828	496	1187
15829	497	1188
15830	498	1189	Class 8CW
15831	499	1190	Superheated
15832	500	1191

Illustration

[edit]

Class 8C and rebuiltType XF tender no. 1175

References

[edit]

Wikimedia Commons has media related toSouth African Class 8C 4-8-0.

^^a ^b ^c ^dHolland, D.F. (1971).Steam Locomotives of the South African Railways. Vol. 1: 1859–1910 (1st ed.). Newton Abbott, England:David & Charles. p. 128.ISBN 978-0-7153-5382-0.
^^a ^b ^c ^dClassification of S.A.R. Engines with Renumbering Lists, issued by the Chief Mechanical Engineer’s Office, Pretoria, January 1912, pp. 8, 12, 15, 41-42 (Reprinted in April 1987 by SATS Museum, R.3125-6/9/11-1000)
^^a ^b ^c ^d ^e ^f ^gPaxton, Leith; Bourne, David (1985).Locomotives of the South African Railways (1st ed.). Cape Town: Struik. pp. 48–49.ISBN 0869772112.
^Durrant, AE (1989).Twilight of South African Steam (1st ed.). Newton Abbott:David & Charles. p. 8.ISBN 0715386387.
^^a ^bNorth British Locomotive Company works list, compiled by Austrian locomotive historian Bernhard Schmeiser
^The South African Railways – Historical Survey. Editor George Hart, Publisher Bill Hart, Sponsored by Dorbyl Ltd., Published c. 1978, p. 25.
^Holland, D. F. (1972).Steam Locomotives of the South African Railways. Vol. 2: 1910-1955 (1st ed.). Newton Abbott, England:David & Charles. p. 139.ISBN 978-0-7153-5427-8.
^^a ^b ^c ^d ^eSouth African Railways and Harbours Locomotive Diagram Book, 2’0" & 3’6" Gauge Steam Locomotives, 15 August 1941, as amended

v t e Locomotives of theCentral South African Railways
3' 6" gauge	CSAR 0-6-0ST 1896 CSAR 4-6-0T 1887 CSAR Class 6-L1 CSAR Class 6-L2 CSAR Class 6-L3 CSAR Class 7 CSAR Class 8-L1 CSAR Class 8-L2 CSAR Class 8-L3 CSAR Class 9 CSAR Class 10 1904 CSAR Class 10 1910 CSAR Class 10-2 Saturated CSAR Class 10-2 Superheated CSAR Class 10-C CSAR Class 11 CSAR Class B 0-6-4T CSAR Class C 2-8-4T CSAR Class D CSAR Class E 4-8-0TT CSAR Class E 4-8-2T CSAR Class E 4-10-2T CSAR Class F CSAR Class M CSAR Mallet Saturated CSAR Mallet Stoker CSAR Mallet Superheated CSAR Rack 4-6-4RT CSAR Railmotor IMR 0-6-0ST 1896 IMR 4-6-0T 1887 IMR 46 Tonner 0-6-4T IMR 55 Tonner 2-6-4T IMR 7th Class 4-8-0 IMR 8th Class 4-8-0 IMR Reid Tenwheeler 4-10-2T IMR Western Australian 2-8-4T NZASM 10 Tonner NZASM 13 Tonner NZASM 14 Tonner NZASM 18 Tonner NZASM 19 Tonner NZASM 32 Tonner NZASM 40 Tonner NZASM 46 Tonner OVGS 1st Class 4-4-0TT OVGS 2nd Class 2-6-0 OVGS 2nd Class 2-6-0ST OVGS 3rd Class 4-4-0 OVGS 4th Class G 4-6-0 OVGS 5th Class K 4-6-0 1890 OVGS 5th Class K 4-6-0 1891 OVGS 6th Class L 4-6-0 OVGS 6th Class L2 4-6-0 OVGS 6th Class L3 4-6-0 PPR 0-4-0STNatal PPR 26 Tonner PPR 35 TonnerPortuguese PPR 55 Tonner
2' gauge	CSARPankop
List of South African locomotive classes South African locomotive history

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 0-4-0TBlackie Cape 0-4-2 Cape 2-4-0T CGR 0-4-0STAid Natal 0-4-0STDurban Natal 0-4-0WTNatal Natal 4-4-0TPerseverance
Cape gauge Tank engines	CGR 0-4-0ST 1873 CGR 0-4-0ST 1874 CGR 0-4-0ST 1881 CGR 0-4-0ST 1881Coffee 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'sCongella Durban'sEdward Innes Durban'sJohn Milne Durban'sSir Albert Port Elizabeth 0-4-0ST Kowie Railway 0-6-0T Kowie Railway 4-4-0T Metropolitan & Suburban 4-6-2T NGR 2-6-0TDurban &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 TonnerPortuguese 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 NGRHavelock 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 SARKatanga 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 CopperJohn King &Miner Cape CopperBritannia Cape CopperCaledonia Cape CopperClara Cape Copper Condenser Cape CopperScotia Namaqua CopperPioneer Walvis Bay 2-4-2THope
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

v t e South African steam locomotive tenders
Cape gauge	Type CL Type CZ Type ET Type ET1 Type EW Type EW1 Type EW2 Type FT Type GT Type HT Type JT Type JT1 Type JV Type KT Type LP Type MP Type MP1 Type MR Type MS Type MT Type MT1 Type MT2 Type MX Type MY Type MY1 Type SH Type SK Type TJ Type TL Type TM Type WE Type WG Type X-17 Type X-20 Type XC Type XC1 Type XD Type XE Type XE1 Type XF Type XF1 Type XF2 Type XJ Type XM Type XM1 Type XM2 Type XM3 Type XM4 Type XP1 Type XS Type YB Type YC Type YE Type YE1 Type ZA Type ZB Type ZC Type ZE
List of South African locomotive classes South African locomotive history South African locomotive numbering and classification

South African steam locomotive tenders

Cape gauge

Type FT

Type GT

Type HT

Type KT

Type LP

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