South African Class 17 4-8-0TT
25+3⁄4 in (654 mm)
Bogie 2: 17 LT 18 cwt (18,190 kg)
21 in (533 mm) stroke
AAR knuckle (1930s)
Performance figures | |
---|---|
Tractive effort | 18,670 lbf (83.0 kN) @ 75% |
Career | |
---|---|
Operators | South African Railways |
Class | Class 17 |
Number in class | 21 |
Numbers | 1415–1435 |
Delivered | 1926-1929 |
First run | 1926 |
Withdrawn | 1961 |
The South African Railways Class 17 4-8-0TT of 1926 was a steam locomotive from the pre-Union era in the Natal Colony.
Between 1926 and 1929, to address a shortage of suitable shunting locomotives, the South African Railways rebuilt twenty-one Class A 4-8-2 Mountain type tank steam locomotives to Class 17 4-8-0 Mastodon type tank-and-tender locomotives.[1][2][3][4]
Manufacturers
The Natal Government Railways (NGR) Class D 4-8-2T Mountain type tank locomotive was designed by William Milne, the locomotive superintendent of the NGR from 1877 to 1896, and built by Dübs and Company. One hundred of these locomotives were delivered in ten batches by Dübs between 1888 and 1899 and in 1915 another two were built from spare parts by the South African Railways (SAR) in their Durban shops.[1][5]
Belpaire firebox
Beginning in 1905, these NGR Class D locomotives, originally known on the NGR as the "Dübs A", were gradually reboilered and fitted with Belpaire fireboxes with wider firegrates. The unmodified locomotives were then designated NGR Class D1 while the modified locomotives with Belpaire fireboxes were designated Class D2.[1][5][6]
In SAR service, the NGR Class D1 and D2 were both designated Class A in 1912 while the modified locomotives were referred to as Class A Belpaire.[1][5]
Rebuilding
When a shortage of suitable shunting locomotives developed in the 1920s as a result of increasing traffic throughout the country and particularly on the Witwatersrand, the SAR modified twenty-one of the Class A Belpaire 4-8-2 Mountain type tank locomotives.[1][4][7]
The modifications were done between 1926 and 1929 and consisted of the removal of their trailing bissel bogies and coal bunkers, the shortening of their main frames and the addition of tenders to increase their coal and water capacity, thereby converting them to 4-8-0 Mastodon type tank-and-tender locomotives.[1][4][7]
Tenders from various scrapped locomotive types were used. The tender depicted in the main picture is a three-axle tender while the official SAR locomotive diagram depicts a tender with four axles on two bogies.[1][2][3]
Service
These rebuilt 4-8-2TT locomotives were reclassified to Class 17 and renumbered in the range from 1415 to 1435. They were employed as shunting engines around Durban, Pietermaritzburg and Port Elizabeth and gave more than thirty years service in this format. In October 1957 Pietermaritzburg’s last two Class 17s were transferred from Masons Mill to Greyville near Durban. The locomotives were all withdrawn from service by 1961, more than seventy years after the first Class A locomotive was built.[3][4][7][8]
In November 1953 two of these locomotives, numbers 1423 and 1431, were purchased by the Zambezi Saw Mills Company for use on their Livingstone-Mulobezi logging railway in Northern Rhodesia. These two engines were scrapped between 1961 and 1963.
Works numbers and renumbering
Class 17 no. | Year built | NGR Class D2 no. | SAR Class A no. | Dübs works no. |
---|---|---|---|---|
1415 | 1898 | 113 | 158 | 3556 |
1416 | 1897 | 108 | 154 | 3484 |
1417 | 1890 | 68 | 116 | 2611 |
1418 | 1899 | 134 | 190 | 3820 |
1419 | 1890 | 82 | 128 | 2625 |
1420 | 1890 | 75 | 122 | 2618 |
1421 | 1890 | 61 | 109 | 2604 |
1422 | 1895 | 89 | 135 | 3317 |
1423 | 1890 | 80 | 193 | 2626 |
1424 | 1898 | 120 | 166 | 3563 |
1425 | 1890 | 71 | 119 | 2614 |
1426 | 1895 | 90 | 136 | 3318 |
1427 | 1890 | 69 | 117 | 2612 |
1428 | 1890 | 70 | 118 | 2613 |
1429 | 1899 | 143 | 181 | 3829 |
1430 | 1899 | 141 | 191 | 3827 |
1431 | 1897 | 105 | 151 | 3481 |
1432 | 1898 | 112 | 157 | 3605 |
1433 | 1890 | 83 | 129 | 2623 |
1434 | 1897 | 101 | 147 | 3477 |
1435 | 1898 | 121 | 163 | 3564 |
References
- ^ a b c d e f g Espitalier, T.J.; Day, W.A.J. (1944). The Locomotive in South Africa - A Brief History of Railway Development. Chapter III - Natal Government Railways. (Continued). South African Railways and Harbours Magazine, June 1944. p. 423.
- ^ a b South African Railways and Harbours Locomotive Diagram Book, 2'0" & 3'6" Gauge Steam Locomotives, 15 August 1941, pp. 21 & 21A, as amended
- ^ a b c Paxton, Leith; Bourne, David (1985). Locomotives of the South African Railways (1st ed.). Cape Town: Struik. pp. 10–11, 26–27, 68. ISBN 0869772112.
- ^ a b c d Soul of A Railway, System 6, Part 2: Greyville Loco, Greyville Station to Umgeni & Berea Road to Rossburgh. Caption 7. (Accessed on 26 November 2016)
- ^ a b c Holland, D.F. (1971). Steam Locomotives of the South African Railways. Vol. 1: 1859–1910 (1st ed.). Newton Abbott, England: David & Charles. pp. 90–91. ISBN 978-0-7153-5382-0.
- ^ The Railway Report for year ending 31 Dec. 1908, Natal Government Railways, p. 39, par 14.
- ^ a b c Holland, D. F. (1972). Steam Locomotives of the South African Railways. Vol. 2: 1910-1955 (1st ed.). Newton Abbott, England: David & Charles. p. 63. ISBN 978-0-7153-5427-8.
- ^ Soul of A Railway, System 6, Part 5: The New Main Line from Rossburgh to Pietermaritzburg compiled by Les Pivnic. Caption 103. (Accessed on 26 August 2017)
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