CGR 1st Class 2-6-0ST 1876

CGR 1st Class 2-6-0ST 1876
to South African Class 01 2-6-0ST

CGR 1st Class 2-6-0ST no. M16
SAR Class 01 2-6-0 ST no. 0416
Type and origin
Power type Steam
Designer Kitson and Company
Builder Kitson and Company
Serial number 2046-2047
Model 2-6-0T "Mogul" Back-to-Back
Build date 1876
Total produced 1 pair
Rebuilder Cape Government Railways
Rebuild date c. 1881
Number rebuilt 2
Specifications
Configuration Rebuilt to 2-6-0ST "Mogul"
Gauge 3 ft 6 in (1,067 mm) Cape gauge
Leading wheel
diameter
24 in (610 mm)
Driver diameter 39 in (991 mm)
Wheelbase 7 ft 9 in (2.362 m) coupled
11 ft 4 in (3.454 m) engine [1]
Length 22 ft 9 12 in (6.947 m) over couplers
Height 11 ft 4 12 in (3.467 m)
Axle load 7 820 long tons (7.5 t) on middle driver
Weight on drivers 20 720 long tons (20.7 t)
Locomotive weight 25 1320 long tons (26.1 t) w/o
Fuel type Coal
Fuel capacity 12 long ton (0.5 t)
Water capacity 520 imp gal (2,400 l; 620 US gal)
Boiler 5 ft 3 in (1.600 m) pitch [1]
Boiler pressure 140 psi (970 kPa)
Firegrate area 10 sq ft (0.929 m2)
Heating surface:
– Tubes
483 sq ft (44.872 m2)
– Firebox 49 sq ft (4.6 m2)
– Total 532 sq ft (49.4 m2)
Cylinders Two
Cylinder size 12 in (305 mm) bore
20 in (508 mm) stroke
Valve gear Stephenson
Performance figures
Tractive effort 7,754 lbf (34 kN) at 75% pressure
Career
Operator(s) Cape Government Railways
South African Railways
Class CGR 1st Class, SAR Class 01
Number in class 2
Number(s) M15-M16
Delivered 1876
First run 1876 [2][3][4]

The CGR 1st Class 2-6-0ST of 1876 is a South African steam locomotive from the pre-Union era in the Cape Colony.

In 1876 the Cape Government Railways placed a pair of back-to-back 2-6-0 Mogul type side-tank locomotives in service on the Cape Midland system, built by Kitson. They were later separated and rebuilt to saddle-tank locomotives for use as shunting engines. When a classification system was introduced, they were designated 1st Class.[2][4]

Manufacturer

A pair of Mogul type 2-6-0 side-tank locomotives were delivered to the Cape Government Railways (CGR) from Kitson and Company in 1876, arriving in Port Elizabeth on the ship Queen of the West on 21 February and numbered M15 and M16 for the Midland System.[2][4][5]

Chacteristics

The locomotives were built as Stephenson’s Patent permanently coupled back-to-back tank locomotives, a configuration that allowed the two locomotives to be operated by a single crew. A similar pair of 0-6-0T back-to-back locomotives was delivered to the Eastern System in East London in that same year, built by Robert Stephenson and Company.[1][5]

Service

Cape Government Railways

It is not known whether this back-to-back pair displayed the same instability in operation as the 0-6-0T back-to-back locomotive pair on the Eastern System, but by 1881 they had also been separated. In the process they were rebuilt to saddle-tank engines for use in shunting service in Port Elizabeth, where they spent the rest of their service lives. When a classification system was introduced on the CGR, they were designated 1st Class.[2][3][4][5][6]

Both locomotives were renumbered more than once during the CGR era. By 1886 the system prefix M was replaced by the numeral 1 and they were renumbered at least twice more, to 215 and 216 by 1890 and to 415 and 416 by 1896.[2][4][6]

South African Railways

The Union of South Africa was established on 31 May 1910, in terms of the South Africa Act. One of the clauses in the Act required that the three Colonial Government railways, the CGR, the Natal Government Railways and the Central South African Railways (CSAR), also be united under one single administration to control and administer the railways, ports and harbours of the Union. While the South African Railways (SAR) came into existence in 1910, the actual classification and renumbering of all the rolling stock of the three constituent railways required careful planning and was only implemented with effect from 1 January 1912.[6][7]

By 1912 both locomotives still survived to be taken onto the SAR roster. Since they were considered obsolete by the SAR, the locomotives were designated Class 01 and renumbered by having the numeral 0 prefixed to their existing numbers. Even though they were considered obsolete and no. 0415 was scrapped in 1916, no. 0416 was only scrapped in 1946 after seventy years in service.[3][4][6][8]

Sides illustrated

A front view of the rebuilt saddle-tank version is illustrated below, showing no. 0416 that started its career as half of the Stephenson's Patent permanently coupled back-to-back pair in 1876.

See also

References

  1. 1.0 1.1 1.2 Wiener, Lionel. Articulated Locomotives. pp. 508-509, 511.
  2. 2.0 2.1 2.2 2.3 2.4 Holland, D.F. (1971). Steam Locomotives of the South African Railways, Volume 1: 1859-1910 (1st ed.). Newton Abbott, Devon: David & Charles. pp. 28, 106. ISBN 978-0-7153-5382-0.
  3. 3.0 3.1 3.2 Holland, D.F. (1972). Steam Locomotives of the South African Railways, Volume 2: 1910-1955 (1st ed.). Newton Abbott, Devon: David & Charles. pp. 118–121. ISBN 978-0-7153-5427-8.
  4. 4.0 4.1 4.2 4.3 4.4 4.5 C.G.R. Numbering Revised, Article by Dave Littley, SA Rail May–June 1993, pp. 94-95.
  5. 5.0 5.1 5.2 Back-to-back - The known facts
  6. 6.0 6.1 6.2 6.3 Classification of S.A.R. Engines with Renumbering Lists, issued by the Chief Mechanical Engineer’s Office, Pretoria, January 1912. (Reprinted in April 1987 by SATS Museum, R.3125-6/9/11-1000)
  7. The South African Railways - Historical Survey. Editor George Hart, Publisher Bill Hart, Sponsored by Dorbyl Ltd., Published c. 1978, p. 25.
  8. Paxton, Leith; Bourne, David (1985). Locomotives of the South African Railways (1st ed.). Cape Town: Struik. p. 16. ISBN 0869772112.