LNER Class K4

Specifications
Specifications
Configuration:;
• Whyte	2-6-0
Gauge	4 ft 8+1⁄2 in (1,435 mm) standard gauge
Driver dia.	5 ft 2 in (1.575 m)
Loco weight	68.4 long tons (69.5 t; 76.6 short tons)
Tender weight	44.2 long tons (44.9 t; 49.5 short tons)
Fuel type	Coal
Boiler pressure	200 psi (1.38 MPa)
Cylinders	3 (two outside, one inside)
Cylinder size	18.5 in × 26 in (470 mm × 660 mm)
Valve gear	Outside: Walschaerts; Inside: Gresley conjugated;

LNER Class K4
LNER Class K4
	The Great Marquess at Blaenau Ffestiniog, Wales
Power type
Type and origin
Power type	Steam
Designer	Nigel Gresley
Builder	Darlington Works
Build date	1937-1939
Total produced	6
Configuration:;
Specifications
Configuration:;
• Whyte	2-6-0
Gauge	4 ft 8+1⁄2 in (1,435 mm) standard gauge
Driver dia.	5 ft 2 in (1.575 m)
Loco weight	68.4 long tons (69.5 t; 76.6 short tons)
Tender weight	44.2 long tons (44.9 t; 49.5 short tons)
Fuel type	Coal
Boiler pressure	200 psi (1.38 MPa)
Cylinders	3 (two outside, one inside)
Cylinder size	18.5 in × 26 in (470 mm × 660 mm)
Valve gear	Outside: Walschaerts; Inside: Gresley conjugated;
Tractive effort
Performance figures
Tractive effort	36,600 lbf (162.80 kN)
Power class
Career
Power class	5P6F
Numbers	LNER (Pre 1946): 3441-3446; LNER (Post 1946) 1993-1998; BR: 61993-61998;
Withdrawn	1961
Disposition	One preserved, remainder scrapped