Indian locomotive class YC

Indian locomotive class YC
Vulcan Foundry works photo of a YC class locomotive
Type and origin Power type Steam Builder Nasmyth Wilson and Company Skoda Works Vulcan Foundry Build date 1928-1948 Total produced 38
Specifications Configuration: ​  • Whyte 4-6-2 Gauge 1,000 mm (3 ft 3+3⁄8 in) Leading dia. 724 mm (2 ft 4.5 in) Coupled dia. 1,448 mm (4 ft 9.0 in) Trailing dia. 762 mm (2 ft 6.0 in) Wheelbase: ​  • Engine 8,635 mm (28 ft 4.0 in)  • Coupled 3,200 mm (10 ft 6 in)  • incl. tender 18,561 mm (60 ft 10.7 in) 18,970 mm (62 ft 3 in) Length: ​  • Over buffers 18,561 mm (60 ft 10.7 in) 18,970 mm (62 ft 3 in) Height 3,429 mm (11 ft 3.0 in) Axle load 12.2 t (12.0 long tons; 13.4 short tons) Loco weight 56.5 t (55.6 long tons; 62.3 short tons) Total weight 91 t (90 long tons; 100 short tons) Fuel type Coal Fuel capacity 4.5 t (4.4 long tons; 5.0 short tons) Water cap. 13.6 m3 (480 cu ft) Firebox: ​  • Grate area 2.88 m2 (31.0 sq ft) Boiler: ​  • Tube plates 4,724 mm (15 ft 6.0 in) Boiler pressure 12.7 bar (184 psi) Heating surface 134.5 m2 (1,448 sq ft) Cylinders Two, outside Cylinder size 445 mm × 610 mm (17.5 in × 24.0 in) Valve gear Walschaerts
Career Numbers See table

Vulcan Foundry brochure of the YC class

The YC class was a class of 4-6-2 tender locomotives built for metre-gauge railways under the control of predecessor companies of Indian Railways, designed accordingly to the Indian Railway Standard (IRS).

History

The YC class was the larger and heavier version of the YB class, fitted with a larger boiler and cylinders, thus increasing the weight by six tons. The axle loading was also increased by two tons, compared to the YB's 10-ton axle load, as a result of the fitting of larger components. Both designs were designed to haul passenger trains.

Between 1928 and 1932, a total of 28 locomotives were built. Only the Bombay, Baroda and Central India Railway, the Madras and Southern Mahratta Railway and Burma Railways rostered both the YCs and YBs in their fleets. The other Indian railway companies preferred to use the lighter YB class design, which had well over 200 examples built.

Burma

After Burma Railways came under control of the government of British Burma recently separated from the British Raj in 1937, its stock including the YC class were taken over. During the Burma campaign and the Japanese occupation, most of the YC class locomotives were destroyed. After the war, Burma Railways acquired 10 more locomotives, of which two are now preserved.

India

After the partition of India and the amalgamation of private railway companies to form Indian Railways, all 15 locomotives built for the Indian proper were transferred to the Southern Railway zone that was established in 1951. Initially given the numbers 550 to 564, as part of the introduction of a new numbering scheme in March 1957, the YCs were renumbered 30139–30153.

By 1975, none of the YC class were listed on any Indian Railways roster.

List

Builder	Year	Quantity	Serial number	Operator	Running number
Nasmyth, Wilson and Company	1928	3	1520–1522	Madras and Southern Mahratta Railway	414–416 From 1951: 550–552
Nasmyth, Wilson and Company	1928	2	1523–1524	Bombay, Baroda and Central India Railway	328, 347 From 1951: 563–564
Vulcan Foundry	1929	7	4266–4272	Madras and Southern Mahratta Railway	N/A From 1951: 553–559
Škoda	1931	10	712–721	Burma Railways	158–167
Škoda	1931	3	722–724	Madras and Southern Mahratta Railway	471–473 From 1951: 560–562
Vulcan Foundry	1932	3	4558–4560	Burma Railways	168–170
Vulcan Foundry	1947/48	10	5598–5607	Burma Railways	621–630
References:

External links

• Technical Details of Class YC steam engine, via Flickr