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Specifications
Specifications
Configuration:;
• Whyte	4-4-2T
Gauge	5 ft 3 in (1,600 mm)
Leading dia.	3 ft 0 in (910 mm)
Driver dia.	5 ft 8+1⁄2 in (1,740 mm)
Trailing dia.	3 ft 9 in (1,140 mm)
Length	34 ft 1+3⁄4 in (10,408 mm)
Axle load	12.5 long tons (12.7 t)
Loco weight	48.5 long tons (49.3 t)
Water cap.	1,130 imp gal (5,100 L; 1,360 US gal)
Boiler pressure	160 lbf/in2 (1.10 MPa)
Cylinders	2
Cylinder size	16 in × 20 in (406 mm × 508 mm)

Type and origin
Type and origin
Power type	Steam
Designer	H. Ivatt / Coey
Builder	Inchicore
Build date	1894 & 1901
Total produced	6

GS&WR 37 Class
GS&WR 37 Class
	4-4-2T No. 317 partially hidden behind a railmotor
Power type
Type and origin
Power type	Steam
Designer	H. Ivatt / Coey
Builder	Inchicore
Build date	1894 & 1901
Total produced	6
Configuration:;
Specifications
Configuration:;
• Whyte	4-4-2T
Gauge	5 ft 3 in (1,600 mm)
Leading dia.	3 ft 0 in (910 mm)
Driver dia.	5 ft 8+1⁄2 in (1,740 mm)
Trailing dia.	3 ft 9 in (1,140 mm)
Length	34 ft 1+3⁄4 in (10,408 mm)
Axle load	12.5 long tons (12.7 t)
Loco weight	48.5 long tons (49.3 t)
Water cap.	1,130 imp gal (5,100 L; 1,360 US gal)
Boiler pressure	160 lbf/in2 (1.10 MPa)
Cylinders	2
Cylinder size	16 in × 20 in (406 mm × 508 mm)
Tractive effort
Performance figures
Tractive effort	9,530 lbf (42.39 kN)
Operators
Career
Operators	GS&WR; GSR; CIÉ;
Class	C7 (Inchicore)
Number in class	6
Numbers	37–38, 317–320
Locale	Ireland
Withdrawn	1955
Disposition	All scrapped
	Details for No. 37 as built

The Great Southern and Western Railway (GS&WR) Class 37 consisted of six 4-4-2T tank engines.^[1] The first two built by locomotive superintendent Henry Ivatt (Snr.) were based on a previous 2-4-0T design by McDonnell, as were some 2-4-2Ts Ivatt produced two years earlier for the Kerry branches.^[2]

Construction

In 1900 Robert Coey, who by then had been promoted Inchicore Railway Works Manager to locomotive superintendent,^{[citation needed]} produced four of a heavier and more powerful 4-4-2T, these were known as Class 27.^[2]

Robert Coey in 1902 produced four more of the lighter class built by Ivatt, these were to be the final passenger tanks built by the GS&WR.^[2]

Design

The Class 37 had a very low 13 long tons 6 cwt (29,800 lb or 13.5 t) maximum axle load enabling a very high route availability. By contrast the Class 27 had a higher maximum axle load 15 long tons 10 cwt (34,700 lb or 15.7 t).^[1]

Service

On the amalgamation to Great Southern Railways in 1925 some of these classes were allocated to the former Dublin and South Eastern Railway (DSER) services to Bray,^[2] where there was a shortage of motive power at least in part due to the ravages of the Irish Civil War.^{[citation needed]} By the 1930s most have been allocated to the Cork local services.^[1]

By 1948 the type was regarded as obsolete but all lasted until the 1950s with the last withdrawn in 1955.^[1]

References

^ ^a ^b ^c ^d ^e Clements, Jeremy; McMahon, Michael (2008). Locomotives of the GSR. Colourpoint Books. pp. 62, 64. ISBN 9781906578268.
^ ^a ^b ^c ^d Murray, K. A.; McNeil, D.B. (1976). The Great Southern & Western Railway. Irish Railway Record Society. pp. 148–149, 151, 193. ISBN 0904078051.