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Indian locomotive class YC

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Indian locomotive class YC
Vulcan Foundry works photo of a YC class locomotive
Type and origin
Power typeSteam
Builder
Build date1928-1948
Total produced38
Specifications
Configuration:
​
 • Whyte4-6-2
Gauge1,000 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:​
 • Engine8,635 mm (28 ft 4.0 in)
 • Coupled3,200 mm (10 ft 6 in)
 • incl. tender18,561 mm (60 ft 10.7 in)
18,970 mm (62 ft 3 in)[a]
Length:
​
 • Over buffers18,561 mm (60 ft 10.7 in)
18,970 mm (62 ft 3 in)[a]
Height3,429 mm (11 ft 3.0 in)
Axle load12.2 t (12.0 long tons; 13.4 short tons)
Loco weight56.5 t (55.6 long tons; 62.3 short tons)
Total weight91 t (90 long tons; 100 short tons)
Fuel typeCoal
Fuel capacity4.5 t (4.4 long tons; 5.0 short tons)
Water cap.13.6 m3 (480 cu ft)
Firebox:​
 • Grate area2.88 m2 (31.0 sq ft)
Boiler:
​
 • Tube plates4,724 mm (15 ft 6.0 in)
Boiler pressure12.7 bar (184 psi)
Heating surface134.5 m2 (1,448 sq ft)
CylindersTwo, outside
Cylinder size445 mm × 610 mm (17.5 in × 24.0 in)
Valve gearWalschaerts
Career
NumbersSee table
30139–30153 (All-India numbers, ex-MSMR)[1]
Vulcan Foundry brochure of the YC class

The YC class was a class of 4-6-2 tender locomotives introduced from 1928 for the predecessor metre-gauge railway companies of the Indian Railways (IR) and the Burma Railways (BR),[b] as part of the metre-gauge Indian Railway Standard (IRS) series of locomotive designs.

History

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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 the YBs and YCs were designed to haul passenger trains.[2]

Between 1928 and 1932, a total of 28 locomotives were built. Only the Bombay, Baroda and Central India Railway,[c] 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.[3]

Burma

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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.[4][5]

India

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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.[3]

By 1975, none of the YC class were listed on any Indian Railways roster.[6]

List of operators

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Builder Year Quantity Serial number Operator Running number
Nasmyth, Wilson and Company 1928 3 1520–1522 Madras and Southern Mahratta Railway (MSMR) 414–416 (original)

550–552 (renumbered)[7]
Nasmyth, Wilson and Company 1928 2 1523–1524 Bombay, Baroda and Central India Railway (BBCIR)[c] 328, 347 (original; ex-BBCIR)

563–564 (renumbered; MSMR)[7]
Vulcan Foundry 1929 7 4266–4272 MSMR 553–559[7]
Škoda 1931 10 712–721 Burma Railways (BR) 158–167[8]
Škoda 1931 3 722–724 MSMR 471–473 (original)

560–562 (renumbered)[9]
Vulcan Foundry 1932 3 4558–4560 BR 168–170[10][8]
Vulcan Foundry 1947/48 10 5598–5607 BR 621–630[11]
References: [3][4]

Notes

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  1. ^ a b The locomotives built in 1947-48 had longer tenders, resulting in their overall length and wheelbase being longer compared to the earlier locomotives.
  2. ^ Later separate from British India.
  3. ^ a b These BBCIR YCs were later transferred to the MSMR.

References

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  1. ^ Hughes 1996, p. 51.
  2. ^ Hughes & Jux 1977, p. 34.
  3. ^ a b c Hughes & Jux 1977, p. 30.
  4. ^ a b Burma Railways, Dampflokomotiven 1. und 2. Generation [Burma Railways, 1st and 2nd generation steam locomotives] (in German). January 2012. p. 31.
  5. ^ "Burma/Myanmar: Steam and Pagodas". FarRail Tours. Retrieved 2024-01-15.
  6. ^ Hughes & Jux 1977, p. 96.
  7. ^ a b c Hughes 1992, p. 82.
  8. ^ a b Hughes 1992, p. 48.
  9. ^ Hughes 1992, pp. 80, 82.
  10. ^ 4-6-2 Type Passenger Locomotive for the Burma Rys. Locomotive Publishing Company, London. 1933. p. 37.
  11. ^ Hughes 1996, p. 85.

Bibliography

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  • Hughes, Hugh (1992). Indian Locomotives: Part 2 – Metre Gauge 1872–1940. Harrow, Middlesex: The Continental Railway Circle. ISBN 0-9503469-9-3. OCLC 26549293.
  • Hughes, Hugh (1996). Indian Locomotives: Part 4 – 1941–1990. Harrow, Middlesex: The Continental Railway Circle. ISBN 0-9521655-1-1. OCLC 35135033.
  • Hughes, Hugh; Jux, Frank (1977). Steam Locomotives in India, Part 2 – Metre Gauge. Continental Railway Circle. ISBN 0-9503469-3-4.
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