Highland Railway Cumming 4-4-0 Class

Specifications
Specifications
Configuration:;
• Whyte	4-4-0
• UIC	2′B
Gauge	4 ft 8+1⁄2 in (1,435 mm)
Leading dia.	3 ft 3 in (0.991 m)
Driver dia.	6 ft 3 in (1.905 m)
Loco weight	54 long tons 19+1⁄2 cwt (125,400 lb or 56.9 t)
Fuel type	Coal
Boiler	4 ft 8+9⁄16 in (1.44 m) diameter
Boiler pressure	175 psi (1.21 MPa)
Heating surface	1,140 sq ft (106 m2)
Superheater:;
• Type	Robinson
• Heating area	180 sq ft (17 m2)
Cylinders	Two, outside
Cylinder size	20 in × 26 in (508 mm × 660 mm)
Valve gear	Walschaerts
Valve type	Inside admission piston valves
Train brakes	Vacuum

Highland Railway Cumming 4-4-0
Highland Railway Cumming 4-4-0
Power type
Type and origin
Power type	Steam
Designer	Christopher Cumming
Builder	Hawthorn Leslie
Serial number	3172–3173
Build date	1916
Total produced	2
Configuration:;
Specifications
Configuration:;
• Whyte	4-4-0
• UIC	2′B
Gauge	4 ft 8+1⁄2 in (1,435 mm)
Leading dia.	3 ft 3 in (0.991 m)
Driver dia.	6 ft 3 in (1.905 m)
Loco weight	54 long tons 19+1⁄2 cwt (125,400 lb or 56.9 t)
Fuel type	Coal
Boiler	4 ft 8+9⁄16 in (1.44 m) diameter
Boiler pressure	175 psi (1.21 MPa)
Heating surface	1,140 sq ft (106 m2)
Superheater:;
• Type	Robinson
• Heating area	180 sq ft (17 m2)
Cylinders	Two, outside
Cylinder size	20 in × 26 in (508 mm × 660 mm)
Valve gear	Walschaerts
Valve type	Inside admission piston valves
Train brakes	Vacuum
Tractive effort
Performance figures
Tractive effort	20,627 lbf (91.8 kN)
Operators
Career
Operators	HR, LMS
Power class	LMS: 3P
Numbers	HR: 73–74,; LMS: 14522–14523
Withdrawn	1935–1936
Disposition	Both scrapped

Power typeSteam

The Highland Railway Cumming 4-4-0 class was a pair of 4-4-0 steam locomotives designed by Christopher Cumming, the Locomotive Superintendent of the Highland Railway

HR No.	Name	LMS No.	Withdrawn	Notes
73	Snaigow	14522	April 1936
74	Durn	14523	April 1935

v t e Highland Railway locomotives
W. Barclay (1855–1865)	Barclay classes
W. Stroudley (1865–1869)	0-6-0ST
D. Jones (1870–1896)	F (Duke) H (2-4-0) O (2-4-0T) L ('Skye Bogies') E (Bruce) S (Strathpeffer) D (Strath) P (‘Yankee Tank’) I (‘Jones Goods’) B (Loch)
P. Drummond (1896–1912)	C (Ben) K ('Barneys') A (Castle) V (0-6-0T) W (0-4-4T) U (New Ben) X (0-6-4T)
F. G. Smith (1912–1915)	River
C. Cumming (1915–1922)	4-4-0 Clan Clan Goods
Miscellaneous	Dunrobin (I) Dunrobin (II) Ex-Findhorn Railway 0-4-0ST
Locomotives of the London, Midland and Scottish Railway Steam locomotives of British Railways

Numbering