LNWR Improved Precedent Class

Specifications
Specifications
Configuration:;
• Whyte	2-4-0
• UIC	1B n2
Gauge	4 ft 8+1⁄2 in (1,435 mm) standard gauge
Leading dia.	3 ft 6 in (1,067 mm) + 3-inch (76 mm) tyres
Driver dia.	6 ft 9 in (2,057 mm)
Wheelbase	Coupled: 8 ft 3 in (2.51 m); Loco: 15 ft 8 in (4.78 m);
Length	44 ft 0 in (13.41 m)
Loco weight	35.60 long tons (36.17 t; 39.87 short tons)
Fuel type	Coal
Water cap.	1,800 imp gal (8,200 L; 2,200 US gal), later 2,000 imp gal (9,100 L; 2,400 US gal)
Boiler pressure	150 lbf/in2 (1.03 MPa)
Heating surface	1,063.7 sq ft (98.82 m2)
Cylinders	Two, inside
Cylinder size	17 in × 24 in (432 mm × 610 mm)
Valve gear	Allan

Type and origin
Type and origin
Power type	Steam
Designer	F. W. Webb
Builder	Crewe Works
Build date	1887–1901
Total produced	158

LNWR Improved Precedent Class
LNWR Improved Precedent Class
	No. 1194 Miranda
Power type
Type and origin
Power type	Steam
Designer	F. W. Webb
Builder	Crewe Works
Build date	1887–1901
Total produced	158
Configuration:;
Specifications
Configuration:;
• Whyte	2-4-0
• UIC	1B n2
Gauge	4 ft 8+1⁄2 in (1,435 mm) standard gauge
Leading dia.	3 ft 6 in (1,067 mm) + 3-inch (76 mm) tyres
Driver dia.	6 ft 9 in (2,057 mm)
Wheelbase	Coupled: 8 ft 3 in (2.51 m); Loco: 15 ft 8 in (4.78 m);
Length	44 ft 0 in (13.41 m)
Loco weight	35.60 long tons (36.17 t; 39.87 short tons)
Fuel type	Coal
Water cap.	1,800 imp gal (8,200 L; 2,200 US gal), later 2,000 imp gal (9,100 L; 2,400 US gal)
Boiler pressure	150 lbf/in2 (1.03 MPa)
Heating surface	1,063.7 sq ft (98.82 m2)
Cylinders	Two, inside
Cylinder size	17 in × 24 in (432 mm × 610 mm)
Valve gear	Allan
Tractive effort
Performance figures
Tractive effort	10,918 lbf (48.6 kN)
Operators
Career
Operators	London and North Western Railway; → London, Midland and Scottish Railway;
Power class	LMS: 1P
Number in class	1 January 1923: 76
Nicknames	Jumbos, large Jumbos
Withdrawn	1905–1933
Disposition	One preserved, remainder scrapped

The London and North Western Railway (LNWR) Improved Precedent Class or Renewed Precedent Class is a class of 2-4-0 steam locomotives originally designed for express passenger work. They later gained the nickname of Jumbos.