Indian locomotive class YP

Indian locomotive class YP
No. 2511 on display at the Railway Museum, Mysore.
Type and origin Power type Steam Builder Baldwin Locomotive Works North British Locomotive Company Krauss-Maffei Tata Engineering and Locomotive Co. Build date 1949-1970 Total produced 871
Specifications Configuration: ​  • Whyte 4-6-2  • UIC 2'C1' Gauge 1,000 mm (3 ft 3+3⁄8 in) Coupled dia. 1,372 mm (4 ft 6.0 in) Wheelbase: ​  • incl. tender 16,333 mm (53 ft 7.0 in) Length: ​  • Over buffers 19,088 mm (62 ft 7.5 in) Width 2,590 mm (8 ft 6 in) Height 3,430 mm (11 ft 3 in) Axle load 10.5 t (10.3 long tons; 11.6 short tons) Service weight 99 t (97 long tons; 109 short tons) Fuel type Coal Fuel capacity 9.8 t (9.6 long tons; 10.8 short tons) Water cap. 3,000 US gal (11,000 L; 2,500 imp gal) Firebox: ​  • Grate area 2.6 m2 (28 sq ft) Boiler pressure 14.4 bar (209 psi) Heating surface: ​  • Tubes and flues 134 m2 (1,440 sq ft)  • Total surface 103.35 m2 (1,112.5 sq ft) Superheater: ​  • Heating area 30.75 m2 (331.0 sq ft) Cylinders Two, outside Cylinder size 609 mm (24.0 in) Valve gear Walschaerts
Performance figures Tractive effort: ​  • Starting 82 kN (18,000 lbf)
Career Operators Indian Railways Numbers See table

The Indian locomotive class YP are a class of 4-6-2 passenger locomotives built for Indian Railways' metre gauge network as one of several post-partition standard designs evolved from the pre-war Indian Railway Standard designs.^[1]