CGR 3rd Class 4-4-0 1901

This article is about one of several different Cape Government Railways locomotive types to be designated "3rd Class". For the others, see Cape Government Railways 3rd Class locomotives.

CGR 3rd Class 4-4-0 1901 South African Class 03 4-4-0 1901
CGR 3rd Class 4-4-0 of 1901 Wynberg Tender
Type and origin Power type Steam Designer Cape Government Railways (H.M. Beatty) Builder Sharp, Stewart and Company Serial number 4710-4715 Build date 1901 Total produced 6
Specifications Configuration: ​  •  Whyte 4-4-0 (American)  •  UIC 2'Bn2 Driver 1st coupled axle Gauge 3 ft 6 in (1,067 mm) Cape gauge Leading dia. 28 1⁄2 in (724 mm) Coupled dia. 60 in (1,524 mm) Tender wheels 37 in (940 mm) Wheelbase 40 ft 7 3⁄4 in (12,389 mm)  • Engine 19 ft 6 1⁄8 in (5,947 mm)  • Leading 5 ft 3 in (1,600 mm)  • Coupled 7 ft (2,134 mm)  • Tender 10 ft (3,048 mm) Length: ​  • Over couplers 49 ft 9 in (15,164 mm) Height 12 ft 10 in (3,912 mm) Frame type Plate Axle load 14 LT (14,220 kg)  •  Leading 12 LT (12,190 kg)  • Coupled 14 LT (14,220 kg)  • Tender axle Axle 1: 10 LT 16 cwt (10,970 kg) Axle 2: 8 LT 14 cwt (8,840 kg) Axle 3: 10 LT 13 cwt (10,820 kg) Adhesive weight 28 LT (28,450 kg) Loco weight 40 LT (40,640 kg) Tender weight 30 LT 3 cwt (30,630 kg) Total weight 70 LT 3 cwt (71,280 kg) Tender type 3-axle Fuel type Coal Fuel capacity 5 LT (5.1 t) Water cap 2,350 imp gal (10,700 l) Firebox type Round-top  • Firegrate area 16.8 sq ft (1.56 m2) Boiler: ​  • Pitch 6 ft 9 in (2,057 mm)  • Diameter 4 ft 2 5⁄8 in (1,286 mm)  • Tube plates 10 ft 3⁄8 in (3,058 mm) Boiler pressure 165 psi (1,138 kPa) Safety valve Ramsbottom Heating surface 942 sq ft (87.5 m2)  • Tubes 850 sq ft (79 m2)  • Firebox 92 sq ft (8.5 m2) Cylinders Two Cylinder size 17 in (432 mm) bore 24 in (610 mm) stroke Valve gear Stephenson Couplers Johnston link-and-pin
Performance figures Tractive effort 14,310 lbf (63.7 kN) @ 75%
Career Operators Cape Government Railways South African Railways Class CGR 3rd Class, SAR Class 03 Number in class 6 Numbers 6-11 Nicknames Wynberg Tender Delivered 1901 First run 1901 Withdrawn c. 1932

The Cape Government Railways 3rd Class 4-4-0 of 1901 was a South African steam locomotive from the pre-Union era in the Cape of Good Hope.

In 1901, the Cape Government Railways placed another six 3rd Class Wynberg Tender locomotives with a 4-4-0 American type wheel arrangement in suburban service in Cape Town. It was a heavier and more powerful version of the 3rd Class locomotive of 1898. ^{[1] [2] [3]}

Manufacturer

Six more 3rd ClassWynberg Tender passenger locomotives entered service on the Cape Government Railways (CGR) in 1901 for suburban service in Cape Town. They were built by Sharp, Stewart and Company and numbered in the range from 6 to 11. ^{[1] [2]}

H.M. Beatty

Also designed by H.M. Beatty, these locomo­tives were very similar in design to the 3rd Class 4-4-0 of 1898, but larger and more powerful. They were built for speed and had the largest coupled wheels of any locomotive on the CGR to date, at 60 inches (1,524 millimetres) diameter. ^[1]

In later years, this driving wheel size became the accepted size for mixed traffic and general purpose locomotives on mainline service in South Africa. During the rest of the steam era in South Africa, only four locomotive types were to be introduced with larger driving wheels, post-delivery modifi­cations excluded. ^[1]

Service

Cape Government Railways

These locomotives were also known as Wynberg Tenders. They were also designed with reverse running in mind, with a weatherboard mounted on the six-wheeled tender’s front to protect the crew from the elements when running tender first. ^[1]

South African Railways

Wynberg tender no. 09, c. 1920

When the Union of South Africa was established on 31 May 1910, the three Colonial government railways (CGR, Natal Government Railways and Central South African Railways) 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. ^{[4] [5]}

In 1912, the six locomotives were considered obsolete by the SAR, designated Class 03 and renumbered by having the numeral "0" prefixed to their existing numbers. In SAR service, they continued to work Cape Town's suburban trains. Despite being considered obsolete, all six engines survived until c. 1918, when two were withdrawn from service. The other four survived in service until after 1931. ^{[2] [3] [5]}

Works numbers

The works numbers, original numbers and renumbering of the Cape 3rd Class of 1901 are listed in the table. ^{[1] [5]}

CGR 3rd Class 4-4-0 of 1901

Works no.	Orig. no.	SAR no.
4710	6	06
4711	7	07
4712	8	08
4713	9	09
4714	10	010
4715	11	011

References

Wikimedia Commons has media related to CGR 3rd Class 4-4-0 1901 .

1. Holland, D.F. (1971). Steam Locomotives of the South African Railways. 1: 1859–1910 (1st ed.). Newton Abbott, Devon: David & Charles. pp. 59–60. ISBN   978-0-7153-5382-0. 
2. Paxton, Leith; Bourne, David (1985). Locomotives of the South African Railways (1st ed.). Cape Town: Struik. p. 18. ISBN   0869772112. 
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, January 1944. pp. 9-12.
4. The South African Railways - Historical Survey. Editor George Hart, Publisher Bill Hart, Sponsored by Dorbyl Ltd., Published c. 1978, p. 25.
5. Classification of S.A.R. Engines with Renumbering Lists, issued by the Chief Mechanical Engineer's Office, Pretoria, January 1912, p. 26. (Reprinted in April 1987 by SATS Museum, R.3125-6/9/11-1000)