NCC Class U2

Specifications
Specifications
Configuration:;
• Whyte	4-4-0
Gauge	5 ft 3 in (1,600 mm)
Leading dia.	3 ft 0 in (0.914 m)
Driver dia.	6 ft 0 in (1.829 m)
Wheelbase	No.70: 40 ft 11 in (12.47 m) including tender; Nos.71-87: 41 ft 11 in (12.78 m) including tender
Length	No.70: 49 ft 7+3⁄4 in (15.13 m); Nos.71-87: 50 ft 7+3⁄4 in (15.44 m)
Width	8 ft 4 in (2.54 m)
Height	13 ft 2 in (4.01 m)
Axle load	17 long tons 15 cwt (39,800 lb or 18 t)
Adhesive weight	35 long tons 9 cwt (79,400 lb or 36 t)
Loco weight	51 long tons 10 cwt (115,400 lb or 52.3 t)
Total weight	Nos.70-73 & 84-87: 85 long tons 12 cwt (191,700 lb or 87 t) (191,700 lb or 87,000 kg); Nos.74-83: 84 long tons 9 cwt (189,200 lb or 85.8 t) (189,200 lb or 85,800 kg)
Fuel type	Coal
Fuel capacity	Nos.70-73 & 84-87: 6 long tons (6.1 t); Nos.74-83: 5 long tons (5.1 t)
Water cap.	Nos.70-73 & 84-87: 2,690 imp gal (12,200 L; 3,230 US gal); Nos.74-83: 2,500 imp gal (11,000 L; 3,000 US gal)
Boiler pressure	170 psi (1.17 MPa)
Heating surface	1,421.3 sq ft (132.04 m2)
• Tubes	1,045.1 sq ft (97.09 m2)
• Firebox	123.5 sq ft (11.47 m2)
Superheater:;
• Type	Schmidt
• Heating area	252.7 sq ft (23.48 m2)
Cylinders	Two, inside
Cylinder size	19 in × 24 in (483 mm × 610 mm)
Valve gear	Walschaerts
Train brakes	Automatic vacuum

Type and origin
Type and origin
Power type	Steam
Builder	North British Locomotive Company, Glasgow; NCC, York Road works, Belfast;
Total produced	18

NCC Class U2
NCC Class U2
	NCC 74 Dunluce Castle at the Ulster Folk and Transport Museum, Cultra, 2016
Power type
Type and origin
Power type	Steam
Builder	North British Locomotive Company, Glasgow; NCC, York Road works, Belfast;
Total produced	18
Configuration:;
Specifications
Configuration:;
• Whyte	4-4-0
Gauge	5 ft 3 in (1,600 mm)
Leading dia.	3 ft 0 in (0.914 m)
Driver dia.	6 ft 0 in (1.829 m)
Wheelbase	No.70: 40 ft 11 in (12.47 m) including tender; Nos.71-87: 41 ft 11 in (12.78 m) including tender
Length	No.70: 49 ft 7+3⁄4 in (15.13 m); Nos.71-87: 50 ft 7+3⁄4 in (15.44 m)
Width	8 ft 4 in (2.54 m)
Height	13 ft 2 in (4.01 m)
Axle load	17 long tons 15 cwt (39,800 lb or 18 t)
Adhesive weight	35 long tons 9 cwt (79,400 lb or 36 t)
Loco weight	51 long tons 10 cwt (115,400 lb or 52.3 t)
Total weight	Nos.70-73 & 84-87: 85 long tons 12 cwt (191,700 lb or 87 t) (191,700 lb or 87,000 kg); Nos.74-83: 84 long tons 9 cwt (189,200 lb or 85.8 t) (189,200 lb or 85,800 kg)
Fuel type	Coal
Fuel capacity	Nos.70-73 & 84-87: 6 long tons (6.1 t); Nos.74-83: 5 long tons (5.1 t)
Water cap.	Nos.70-73 & 84-87: 2,690 imp gal (12,200 L; 3,230 US gal); Nos.74-83: 2,500 imp gal (11,000 L; 3,000 US gal)
Boiler pressure	170 psi (1.17 MPa)
Heating surface	1,421.3 sq ft (132.04 m2)
• Tubes	1,045.1 sq ft (97.09 m2)
• Firebox	123.5 sq ft (11.47 m2)
Superheater:;
• Type	Schmidt
• Heating area	252.7 sq ft (23.48 m2)
Cylinders	Two, inside
Cylinder size	19 in × 24 in (483 mm × 610 mm)
Valve gear	Walschaerts
Train brakes	Automatic vacuum
Tractive effort
Performance figures
Tractive effort	17,388 lbf (77.3 kN)
Factor of adh.	4.57
Operators
Career
Operators	Northern Counties Committee (LMS); → Ulster Transport Authority;
Number in class	18
Numbers	70–87
Nicknames	"Scotch Engine"
Withdrawn	1956–1961
Preserved	No.74
Disposition	One preserved, remainder scrapped

The Northern Counties Committee (NCC) Class U2 4-4-0 passenger steam locomotives consisted of 18 locomotives built for service in north-east Ireland. Ten of the engines were new builds supplied by the North British Locomotive Company (NBL) or constructed at the NCC's York Road works. The remainder were rebuilds of existing locomotives.

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