South African Class 7F 4-8-0

This article is about one of two different New Cape Central Railway locomotive types to be designated "7th Class". For the other NCCR 7th Class locomotive, see South African Class 7E 4-8-0.

NCCR 7th Class 4-8-0 1913
South African Class 7F 4-8-0

NCCR 7th Class no. 10
SAR Class 7F no. 1358

Type and origin
Power type	Steam
Designer	Cape Government Railways (H.M. Beatty)
Builder	North British Locomotive Company
Serial number	20217-20219
Model	CGR 7th Class
Build date	1913
Total produced	3

Specifications
Configuration	4-8-0 (Mastodon)
Driver	2nd coupled axle
Gauge	3 ft 6 in (1,067 mm) Cape gauge
Leading dia.	28 ¹⁄₂ in (724 mm)
Coupled dia.	42 ³⁄₄ in (1,086 mm)
Tender wheels	33 ¹⁄₂ in (851 mm) as built 34 in (864 mm) retyred
Wheelbase	46 ft 6 in (14,173 mm)
• Engine	21 ft 3 ¹⁄₂ in (6,490 mm)
• Leading	5 ft 3 in (1,600 mm)
• Coupled	12 ft (3,658 mm)
• Tender	16 ft 1 in (4,902 mm)
• Tender bogie	4 ft 7 in (1,397 mm)
Length:
• Over couplers	53 ft 9 ¹⁄₈ in (16,386 mm)
Height	12 ft 10 in (3,912 mm)
Frame type	Plate
Axle load	9 LT 16 cwt (9,957 kg)
• Leading	10 LT 14 cwt (10,870 kg)
• 1st coupled	9 LT 16 cwt (9,957 kg)
• 2nd coupled	9 LT 15 cwt (9,906 kg)
• 3rd coupled	9 LT 16 cwt (9,957 kg)
• 4th coupled	9 LT 13 cwt (9,805 kg)
• Tender bogie	Bogie 1: 17 LT 8 cwt (17,680 kg) Bogie 2: 18 LT 2 cwt (18,390 kg)
• Tender axle	9 LT 1 cwt (9,195 kg)
Adhesive weight	39 LT (39,630 kg)
Loco weight	49 LT 14 cwt (50,500 kg)
Tender weight	35 LT 10 cwt (36,070 kg) w/o
Total weight	85 LT 4 cwt (86,570 kg) w/o
Tender type	ZC (2-axle bogies) ZA, ZB, ZC, ZE permitted
Fuel type	Coal
Fuel capacity	6 LT 10 cwt (6.6 t)
Water cap	2,600 imp gal (11,800 l)
Firebox type	Round-top
• Firegrate area	17.5 sq ft (1.63 m²)
Boiler:
• Pitch	7 ft 3 in (2,210 mm)
• Diameter	4 ft 6 in (1,372 mm)
• Tube plates	10 ft 9 in (3,277 mm)
• Small tubes	185: 1 ⁷⁄₈ in (48 mm)
Boiler pressure	180 psi (1,241 kPa)
Safety valve	Ramsbottom
Heating surface	1,095 sq ft (101.7 m²)
• Tubes	976 sq ft (90.7 m²)
• Firebox	119 sq ft (11.1 m²)
Cylinders	Two
Cylinder size	17 ¹⁄₂ in (444 mm) bore 23 in (584 mm) stroke
Valve gear	Stephenson
Couplers	Bell link-and-pin

Performance figures
Tractive effort	22,240 lbf (98.9 kN) @ 75%
Factor of adh	3.928

Career
Operators	New Cape Central Railway South African Railways
Class	NCCR 7th Class, SAR Class 7F
Number in class	3
Numbers	NCCR 9-11, SAR 1357-1359
Delivered	1913
First run	1913
Withdrawn	1940

The leading coupled axle had flangeless wheels

The South African Railways Class 7F 4-8-0 of 1913 is a steam locomotive.

In 1913, the New Cape Central Railway placed three Cape 7th Class 4-8-0 Mastodon type steam locomotives in service. In 1925, when the New Cape Central Railway was amalgamated into the South African Railways, these three locomotives were renumbered and reclassified to Class 7F.^[1]^[2]

New Cape Central Railway

The New Cape Central Railway (NCCR) was formed in January 1893, when it purchased all the assets of the bankrupted Cape Central Railway (CCR), which had constructed a line from Worcester via Robertson to Roodewal, now Ashton. In 1894 the NCCR began work to extend the line to Swellendam. From there it continued via Heidelberg to Riversdale, which was reached on 3 December 1903. Voorbaai, near Mosselbaai, was reached in 1904.^[1]

Unlike most other privately owned railways in South Africa, the NCCR prospered and was well and efficiently run. Prior to 1917, dividends were small, but from 1917 to 1925, dividends of 4½% were declared each year. The NCCR was the last component railway to be added to the South African Railways (SAR), when it was liquidated and amalgamated in May 1925. All the NCCR locomotives which came onto the SAR roster, continued to give good service for many years.^[1]^[3]

Manufacturer

These last three NCCR 7th Class locomotives were ordered from and built by the North British Locomotive Company (NBL) in 1913, numbered in the range from NCCR 9 to 11.^[2]^[3]^[4]

Characteristics

The original Cape 7th Class had been designed in 1892 by H.M. Beatty, Cape Government Railways (Western System) Locomotive Superintendent. While there was little difference from the original 7th Class design as far as the main dimensions were concerned, these three locomotives were more modern in appearance. They were more powerful, with a higher boiler pressure of 180 pounds per square inch (1,241 kilopascals) and 17 ¹⁄₂ inches (444 millimetres) bore cylinders instead of the 17 inches (432 millimetres) bore of all but one (the Class 7C) of the earlier models.^[2]^[4]^[5]^[6]

H.M. Beatty

Other differences were the boiler centre line, which was raised to 7 feet 3 inches (2,210 millimetres), a boiler diameter which was increased to 4 feet 6 inches (1,372 millimetres), the total boiler heating surface which was increased to 1,095 square feet (101.7 square metres), tractive effort which was increased to 22,240 pounds-force (98.9 kilonewtons) and a factor of adhesion which was reduced to 3.928.^[2]^[4]^[5]

Visually obvious alterations were the smokebox saddle and the running boards. The distinctive covered smokebox saddle of earlier 7th Class locomotives was replaced with an exposed one. The running boards were no longer straight all the way through from buffer beam to cab end, but dipped ahead of the smokebox and beneath the cab, giving it the appearance of a Hendrie-designed locomotive.^[1]^[2]^[4]^[5]

These locomotives were capable of hauling 180 long tons (180 tonnes) from Ashton to Mosselbaai.^[3]

Class 7 sub-classes

When the NCCR was amalgamated into the SAR in 1925, these three 7th Class locomotives were renumbered in the range from 1357 to 1359 on the SAR roster and designated Class 7F.^[1]^[2]

Other 7th Class locomotives which had come onto the SAR roster from the other railways in the Southern African region in 1912, namely the Cape Government Railways (CGR), Central South African Railways (CSAR), the Natal Government Railways (NGR) and the Rhodesia Railways (RR), as well as earlier NCCR 7th Class locomotive models, were grouped into six different sub-classes by the SAR, becoming SAR Classes 7 and 7A to 7E.^[5]

Service

In SAR service, the Class 7 family did duty on every system in the country. They remained in branchline service, particularly at Tarkastad and Ladysmith and also on the branchline from Touws River to Ladismith, until the last ones were withdrawn in 1972. The Class 7F, however, had a shorter life span and all three locomotives were withdrawn by 1940.^[2]^[4]

References

1 2 3 4 5 Holland, D.F. (1971). Steam Locomotives of the South African Railways, Volume 1: 1859-1910 (1st ed.). Newton Abbott, Devon: David & Charles. pp. 78–80. ISBN 978-0-7153-5382-0.
1 2 3 4 5 6 7 Paxton, Leith; Bourne, David (1985). Locomotives of the South African Railways (1st ed.). Cape Town: Struik. pp. 46–48. ISBN 0869772112.
1 2 3 Espitalier, T.J.; Day, W.A.J. (1944). The Locomotive in South Africa - A Brief History of Railway Development. Chapter II - The Cape Government Railways (Continued). South African Railways and Harbours Magazine, April 1944. pp. 253-257.
1 2 3 4 5 Pattison, R.G. (1997). The Cape Seventh Class Locomotives (1st ed.). Kenilworth, Cape Town: The Railway History Group. pp. 15–16. ISBN 0958400946.
1 2 3 4 South African Railways and Harbours Locomotive Diagram Book, 2’0” & 3’6” Gauge Steam Locomotives, 15 August 1941, as amended
↑ North British Locomotive Company works list, compiled by Austrian locomotive historian Bernhard Schmeiser

Wikimedia Commons has media related to South African Class 7F (4-8-0).

Locomotives of the Cape of Good Hope

7' ¼" gauge	East London 0-4-0 Table Bay 0-4-0ST Table Bay 0-4-0T Table Bay 0-4-0WT

4' 8½" gauge	Cape 0-4-0T Cape 0-4-2 Cape 2-4-0T CGR 0-4-0ST Aid

3' 6" gauge	CGR 0-4-0ST 1873 CGR 0-4-0ST 1874 CGR 0-4-0ST 1881 Coffee Pot CGR 0-6-0ST 1902 CGR 0-6-0T 1876 Back-to-Back 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 2-6-0 1876 Beyer, Peacock 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 2-6-0ST 1876 CGR 1st Class 4-4-0 1879 CGR 1st Class 4-4-0T 1875 CGR 1st Class 4-4-0TT 1881 CGR 2nd Class 2-6-2TT CGR 2nd Class 4-4-0T CGR 3rd Class 2-6-0T 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 1884 CGR 5th Class 1890 CGR 5th Class 1891 CGR 6th Class 1893 CGR 6th Class 1896 CGR 6th Class 1897 CGR 6th Class 1898 CGR 6th Class 1900 CGR 6th Class 1901 Baldwin CGR 6th Class 1901 Schenectady CGR 6th Class 1901 Neilson Reid CGR 6th Class 1902 CGR 6th Class 1904 CGR 6th Class 2-6-2 CGR 6th Class 2-6-4 CGR 7th Class 1892 CGR 7th Class 1896 CGR 7th Class 1902 CGR 8th Class 1901 CGR 8th Class 1902 CGR 8th Class 2-8-0 1903 CGR 8th Class 4-8-0 1903 CGR 8th Class 4-8-0 1903 Exp CGR 8th Class 2-8-0 1904 CGR 8th Class 4-8-0 1904 CGR 9th Class 1903 CGR 9th Class 1906 CGR 10th Class CGR Fairlie CGR Karoo 1903 CGR Karoo 1904 CGR Karoo Compound CGR Kitson-Meyer CGR Mountain 4-8-2 CGR Railmotor CGR Tandem Compound 1902 CGR Tandem Compound 1903 Kowie Railway 0-6-0T Kowie Railway 4-4-0T Metropolitan & Suburban 4-6-2T NCCR 7th Class 1899 NCCR 7th Class 1913 Port Elizabeth 0-4-0ST

2' 6" gauge	Cape Copper 0-6-0T 1871 Cape Copper Britannia Cape Copper Caledonia Cape Copper Clara Class Cape Copper Condenser Cape Copper Scotia Class Namaqua Copper Pioneer

2' gauge	CGR Baldwin 2-6-0 CGR NG 0-4-0T CGR NG 0-6-0T CGR NG 4-6-2T CGR Type A CGR Type B CGR Type C

List of South African locomotive classes South African locomotive history

Locomotives of South Africa

Steam

7' ¼" gauge	East London Harbour 0-4-0 Table Bay Harbour 0-4-0ST Table Bay Harbour 0-4-0T Table Bay Harbour 0-4-0WT

4' 8½" 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

3' 6" gauge Tank engines	CGR 0-4-0ST 1873 CGR 0-4-0ST 1874 CGR 0-4-0ST 1881 Coffee Pot CGR 0-6-0ST 1902 CGR 0-6-0T 1876 Back-to-Back 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 1876 CGR 1st Class 4-4-0T 1875 CGR 2nd Class 4-4-0T 1882 CGR 3rd Class 2-6-0T CGR Railmotor CSAR Class C CSAR Class E CSAR Rack CSAR Railmotor DSWA Eight-Coupled Tank 2-8-0T Durban's Congella Durban's Edward Innes Durban's John Milne Durban's Sir Albert Port Elizabeth Harbour 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 0-4-0ST 1903 SAR 0-4-0T no. 69 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 Clayton Railmotor

3' 6" gauge Tender engines	CGR 1st Class 2-6-0 1876 Beyer, Peacock 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 1879 CGR 1st Class 4-4-0TT 1881 CGR 2nd Class 2-6-2TT 1875 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 1884 CGR 5th Class 4-6-0 1890 CGR 5th Class 4-6-0 1891 DSWA Eight-Coupled Tender 2-8-0 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 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 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 Red Devil

3' 6" 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 0-6-0T 1871 Cape Copper Britannia Cape Copper Caledonia Cape Copper Clara Class Cape Copper Condenser Cape Copper Scotia Class Namaqua Copper Pioneer

2' & 600mm gauges	ACR Class NG-G16A CGR NG 0-6-0T CGR NG 4-6-2T CGR Type A 2-6-4T CGR Type C 0-4-0T DSWA Class Ha DSWA Class Hb DSWA Class Hc DSWA Class Hd DSWA Jung DSWA Zwillinge NGR Class N 4-6-2T SAR NG 0-4-0T 1899 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

Electric

Amcoal Class E38

Diesel

3' 6" 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 SAR Class 36-000 SAR Class 36-200 SAR Class 37-000 Spoornet Class 39-000 TFR Class 35-800 TFR Class 39-200 TFR Class 43-000 TFR Class 44-000

2' gauge Diesel-electric	SAR Class 91-000

3' 6" gauge Diesel-hydraulic	SAR Class 61-000

3' 6" gauge Electro-diesel	Spoornet Class 38-000

South African steam locomotive tenders

Cape gauge	Type LP Type MP1 Type MR Type SH Type SK Type TJ Type TL Type TM Type WE Type WG Type XC Type XC1 Type XD Type XE Type XE1 Type XF Type XF2 Type XJ 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

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