CGR 3rd Class 4-4-0 1901

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CGR 3rd Class 4-4-0 1901
South African Class 03 4-4-0 1901
CGR 3rd Class 4-4-0 1901.jpg
CGR 3rd Class 4-4-0 of 1901 Wynberg Tender
Type and origin
Power typeSteam
DesignerCape Government Railways
(H.M. Beatty)
BuilderSharp, Stewart and Company
Serial number4710-4715
Build date1901
Total produced6
Specifications
Configuration:
 • Whyte4-4-0 (American)
 • UIC2'Bn2
Driver1st coupled axle
Gauge3 ft 6 in (1,067 mm) Cape gauge
Leading dia.28 12 in (724 mm)
Coupled dia.60 in (1,524 mm)
Tender wheels37 in (940 mm)
Wheelbase40 ft 7 34 in (12,389 mm)
 • Engine19 ft 6 18 in (5,947 mm)
 • Leading5 ft 3 in (1,600 mm)
 • Coupled7 ft (2,134 mm)
 • Tender10 ft (3,048 mm)
Length:
 • Over couplers49 ft 9 in (15,164 mm)
Height12 ft 10 in (3,912 mm)
Frame typePlate
Axle load14 LT (14,220 kg)
 • Leading12 LT (12,190 kg)
 • Coupled14 LT (14,220 kg)
 • Tender axleAxle 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 weight28 LT (28,450 kg)
Loco weight40 LT (40,640 kg)
Tender weight30 LT 3 cwt (30,630 kg)
Total weight70 LT 3 cwt (71,280 kg)
Tender type3-axle
Fuel typeCoal
Fuel capacity5 LT (5.1 t)
Water cap2,350 imp gal (10,700 l)
Firebox typeRound-top
 • Firegrate area16.8 sq ft (1.56 m2)
Boiler:
 • Pitch6 ft 9 in (2,057 mm)
 • Diameter4 ft 2 58 in (1,286 mm)
 • Tube plates10 ft 38 in (3,058 mm)
Boiler pressure165 psi (1,138 kPa)
Safety valveRamsbottom
Heating surface942 sq ft (87.5 m2)
 • Tubes850 sq ft (79 m2)
 • Firebox92 sq ft (8.5 m2)
CylindersTwo
Cylinder size17 in (432 mm) bore
24 in (610 mm) stroke
Valve gearStephenson
CouplersJohnston link-and-pin
Performance figures
Tractive effort14,310 lbf (63.7 kN) @ 75%
Career
OperatorsCape Government Railways
South African Railways
ClassCGR 3rd Class, SAR Class 03
Number in class6
Numbers6-11
NicknamesWynberg Tender
Delivered1901
First run1901
Withdrawnc. 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[edit]

Six more 3rd Class Wynberg 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[edit]

Cape Government Railways[edit]

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[edit]

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[edit]

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

References[edit]

  1. ^ a b c d e f 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. ^ a b c Paxton, Leith; Bourne, David (1985). Locomotives of the South African Railways (1st ed.). Cape Town: Struik. p. 18. ISBN 0869772112.
  3. ^ a b 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. ^ a b c 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)