LNER_Class_Y1 Knowpia

Specifications
Specifications
Configuration:;
• Whyte	0-4-0 geared tank
Gauge	4 ft 8+1⁄2 in (1,435 mm)
Driver dia.	2 ft 6 in (0.76 m)
Wheelbase	7 ft 0 in (2.13 m)
Loco weight	Y1/1, 20.35 long tons (20.68 t) ; Y1/2, 19.8 long tons (20.1 t) ; Y1/3, 14 long tons (14 t) ; Y1/4, 19.35 long tons (19.66 t)
Fuel type	coal
Fuel capacity	0.6–0.8 long tons (0.61–0.81 t)
Water cap.	300 imp gal (1,400 L; 360 US gal)
Firebox:
• Grate area	3.97 sq ft (0.369 m2) (all but Y1/2) ; 5.1 sq ft (0.47 m2) (Y1/2)
Boiler	2 ft 8+1⁄2 in (0.826 m) (all but Y1/2) ; 3 ft 1 in (0.94 m) (Y1/2)
Boiler pressure	275 psi (1.90 MPa); water tube boiler
Heating surface:
• Firebox	26.7 sq ft (2.48 m2) (all but Y1/2) ; 35 sq ft (3.3 m2) (Y1/2)
• Tubes	27.73 sq ft (2.576 m2) (all but Y1/2) ; 36.5 sq ft (3.39 m2) (Y1/2)
• Total surface	64.15 sq ft (5.960 m2) (all but Y1/2)
Superheater:;
• Heating area	9.72 sq ft (0.903 m2) (all but Y1/2)
Cylinders	two
Cylinder size	6+3⁄4 in × 9 in (170 mm × 230 mm)

Type and origin
Type and origin
Power type	Steam
Designer	Sentinel Waggon Works
Builder	Sentinel Waggon Works
Build date	1925-1933
Total produced	24

LNER Class Y1
LNER Class Y1
	Preserved 68153 at the Middleton Railway
Power type
Type and origin
Power type	Steam
Designer	Sentinel Waggon Works
Builder	Sentinel Waggon Works
Build date	1925-1933
Total produced	24
Configuration:;
Specifications
Configuration:;
• Whyte	0-4-0 geared tank
Gauge	4 ft 8+1⁄2 in (1,435 mm)
Driver dia.	2 ft 6 in (0.76 m)
Wheelbase	7 ft 0 in (2.13 m)
Loco weight	Y1/1, 20.35 long tons (20.68 t) ; Y1/2, 19.8 long tons (20.1 t) ; Y1/3, 14 long tons (14 t) ; Y1/4, 19.35 long tons (19.66 t)
Fuel type	coal
Fuel capacity	0.6–0.8 long tons (0.61–0.81 t)
Water cap.	300 imp gal (1,400 L; 360 US gal)
Firebox:
• Grate area	3.97 sq ft (0.369 m2) (all but Y1/2) ; 5.1 sq ft (0.47 m2) (Y1/2)
Boiler	2 ft 8+1⁄2 in (0.826 m) (all but Y1/2) ; 3 ft 1 in (0.94 m) (Y1/2)
Boiler pressure	275 psi (1.90 MPa); water tube boiler
Heating surface:
• Firebox	26.7 sq ft (2.48 m2) (all but Y1/2) ; 35 sq ft (3.3 m2) (Y1/2)
• Tubes	27.73 sq ft (2.576 m2) (all but Y1/2) ; 36.5 sq ft (3.39 m2) (Y1/2)
• Total surface	64.15 sq ft (5.960 m2) (all but Y1/2)
Superheater:;
• Heating area	9.72 sq ft (0.903 m2) (all but Y1/2)
Cylinders	two
Cylinder size	6+3⁄4 in × 9 in (170 mm × 230 mm)
Tractive effort
Performance figures
Tractive effort	68130-68142 and 68152-68153: 7,260 lbf (32,300 N) ; 68143-68151: 8,870 lbf (39,500 N)
Operators
Career
Operators	London and North Eastern Railway, British Railways
Disposition	1 preserved, remainder scrapped

The LNER Class Y1 was a class of 0-4-0 geared steam locomotives built by Sentinel Waggon Works for the London and North Eastern Railway and introduced in 1925. They passed into British Railways ownership in 1948 and were numbered 68130-68153 ^[1] but 68134 was withdrawn almost immediately and may not have carried its BR number.

Power unit edit

The superheated vertical water-tube boiler and the engine were similar to those used in Sentinel steam wagons. There were variations within the class as regards boiler size and fuel capacity and these were denoted by sub-classes Y1/1 to Y1/4.

The engines had poppet valves and reversing was by sliding camshaft. The advantage of the water-tube boiler was that steam could be raised much more quickly than with a conventional fire-tube boiler.