Highland Railway Clan Class

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Highland Railway Clan class
No. 49 Clan Campbell
Type and origin Power type Steam Designer Christopher Cumming Builder R. & W. Hawthorn, Leslie and Company Serial number 3329–3332, 3443–3446 Build date 1919 (4), 1921 (4) Total produced 8
Specifications Configuration: ​  • Whyte 4-6-0  • UIC 2′C h2 Gauge 4 ft 8+1⁄2 in (1,435 mm) standard gauge Leading dia. 3 ft 0 in (0.914 m) Driver dia. 6 ft 0 in (1.829 m) Loco weight 63.25 long tons (64.26 t; 70.84 short tons) Tender weight 42 long tons (43 t; 47 short tons) Firebox: ​  • Grate area 25.5 sq ft (2.37 m2) Boiler 4 ft 9+3⁄16 in (1.453 m) diameter, with 1+1⁄8 in (29 mm) taper Boiler pressure 175 psi (1.21 MPa) Heating surface 1,467 sq ft (136.3 m2) Superheater: ​  • Type Robinson  • Heating area 256 sq ft (23.8 m2) Cylinders Two, outside Cylinder size 21 in × 26 in (533 mm × 660 mm) Valve gear Walschaerts Valve type 10 in (254 mm) piston valves
Performance figures Tractive effort 23,688 lbf (105.37 kN)
Career Operators HR → LMS → BR Power class LMS/BR: 4P Numbers HR: 49, 51–57 LMS: 14762–14769 BR: 54767 Withdrawn 1943–1950 Disposition All scrapped

The Highland Railway's Clan Class was a class of passenger 4-6-0 steam locomotives designed by Christopher Cumming. The design is derived from that of the slightly earlier Clan Goods although the similarity is more visual than real. The first four were built in 1919, and the remaining four in 1921.