Walvis Bay 2-4-2T

Walvis Bay 2-4-2T

The engine Hope plinthed in Windhoek, c. 1948
Type and origin
Power type Steam
Designer Kerr, Stuart and Company
Builder Kerr, Stuart and Company
Serial number 652
Build date 1899
Total produced 1
Specifications
Configuration 2-4-2T (Columbia)
Driver 2nd coupled axle
Gauge 2 ft 6 in (762 mm) Namaqualand
Leading dia. 14 in (356 mm)
Coupled dia. 24 in (610 mm)
Trailing dia. 14 in (356 mm)
Frame type Plate
Loco weight 12 LT (12,190 kg)
Fuel type Coal
Fuel capacity 5 long hundredweight (0.3 t)
Water cap 100 imp gal (455 l)
Firebox type Round-top
  Firegrate area 3.5 sq ft (0.33 m2)
Boiler:
  Diameter 2 ft 1 in (635 mm)
  Tube plates 5 ft 1 in (1,549 mm)
  Small tubes 36: 1 34 in (44 mm)
Boiler pressure 120 psi (827 kPa)
Heating surface 102 sq ft (9.5 m2)
Cylinders Two
Cylinder size 6 in (152 mm) bore
10 in (254 mm) stroke
Valve gear Stephenson
Valve type Murdoch's D slide
Couplers Buffers-and-chain
Performance figures
Tractive effort 1,020 lbf (4.5 kN) @ 75%
Career
Operators Walvis Bay Railway
Number in class 1
Official name Hope
Delivered 1899
First run 1899
Disposition Plinthed at Walvis Bay station

The Walvis Bay 2-4-2T of 1899 was a South African steam locomotive from the pre-Union era in the Cape of Good Hope.

In 1899, the Walvis Bay Railway in the British territory of Walvis Bay, a Cape of Good Hope exclave in Deutsch-Südwest-Afrika (German South West Africa), placed a single tank locomotive with a 2-4-2 Columbia type wheel arrangement in service. It remained in service until 1904, when operations on the railway was suspended.[1][2]

Walvis Bay Railway

The British territory surrounding the port of Walvis Bay in Deutsch-Südwest-Afrika (DSWA), an exclave with an area of 434 square miles (1,124 square kilometres), was administered as part of the Cape of Good Hope. In 1899, a 12-mile long (19-kilometre) railway was built between the harbour and the international border with DSWA.[1][3]

The railway began as a 2 ft 6 in (762 mm) gauge horse-drawn tramway within the confines of the harbour town. Following the start of construction of the Swakopmund-Windhuk Staatsbahn in DSWA in 1897 and to not forfeit freight trade opportunities into the interior once that line was completed, the Cape government extended the tramway as a railway to Plum, 11 miles (18 kilometres) due east of Walvis Bay, essentially in the middle of the Namib desert on the DSWA border.[2]

The railway was closed down to traffic in 1904 and abandoned in 1905, partly as a result of the tracks being buried by a sandstorm. The main reason was the opening of the copper mines at Tsumeb and the construction of the Otavi Railway, which commenced in November 1903 to connect Tsumeb with the port of Swakopmund, just north of the DSWA border.[1]

Manufacturer

In June 1899, a single small side-tank locomotive with a 2-4-2 Columbia type wheel arrangement was shipped from Kerr, Stuart and Company of Stoke-on-Trent in England and placed in service on the short railway. The engine was named Hope.[1][2][4][5]

The locomotive was a standard Sirdar class engine, similar to the two Class NG1 0-4-0T locomotives which were to enter service on the Bezuidenhout Light Railway a year later during the Second Boer War, but with leading and trailing pony wheels added and a tropical cab roof. Kerr, Stuart was a supplier of contractor's engines and often built locomotives to standard designs, but without frame stretchers and axles, which were kept in stock until an order was placed. This allowed them to be delivered with a minimum of delay.[6]

Characteristics

The engine was built on 58 inch (16 millimetres) thick plate frames, arranged outside the coupled wheels. It had a boiler with an inside diameter of 2 feet 1 inch (635 millimetres), set at an operating pressure of 120 pounds per square inch (827 kilopascals). Its inclined cylinders were arranged outside the plate frames and had a bore of 6 inches (152 millimetres) and a 10 in (254 mm) stroke. It used Murdoch's D type slide valves, actuated by Stephenson valve gear through rocker arms.[1]

It had coupled wheels of 24 inches (610 millimetres) diameter. The coal bunker had a capacity of 5 long hundredweight (0.3 tonnes) and the side-tanks had a water capacity of 100 imperial gallons (455 litres). The total weight of the engine in full working order was 12 long tons (12,190 kilograms) and it had a tractive effort of 1,020 pounds-force (4.5 kilonewtons) at 75% of boiler pressure.[1]

Service

The engine Hope operated on the railway for some five years, until it became apparent by 1904 that the short link had no economic benefit and operations were suspended. In March 1905, the tracks were buried during a sandstorm and then completely abandoned.[2]

The locomotive remained stored in a local siding in Walvis Bay for years, until it was preserved by the South African Railways administration and plinthed in Windhoek during the 1940s. It was returned to Walvis Bay in 1963, to be plinthed at Walvis Bay railway station. To protect it against Walvis Bay's notoriously corrosive sea air, the engine has since been enclosed in a glass cage.[2]

Illustration

References

Wikimedia Commons has media related to Walvis Bay 2-4-2T.
  1. 1 2 3 4 5 6 Espitalier, T.J.; Day, W.A.J. (1948). The Locomotive in South Africa - A Brief History of Railway Development. Chapter VII - South African Railways (Continued). South African Railways and Harbours Magazine, January 1948. p. 32.
  2. 1 2 3 4 5 Dulez, Jean A. (2012). Railways of Southern Africa 150 Years (Commemorating One Hundred and Fifty Years of Railways on the Sub-Continent - Complete Motive Power Classifications and Famous Trains - 1860-2011) (1st ed.). Garden View, Johannesburg, South Africa: Vidrail Productions. p. 379. ISBN 9 780620 512282.
  3. Walvis Bay: exclave no more, Ieuan Griffiths, Geography, Vol. 79, No. 4 (October 1994), page 354 (Accessed on 10 July 2016)
  4. Jux, Frank (1991). Kerr Stuart & Co. Ltd. Locomotive Works List. Compiled and published by Frank Jux.
  5. SAR-L Group. South African Railways Fans, Yahoo! Groups message no. 51279, 11 July 2016. (Accessed on 12 July 2016)
  6. Paxton, Leith; Bourne, David (1985). Locomotives of the South African Railways (1st ed.). Cape Town: Struik. pp. 99–100. ISBN 0869772112.
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