LB&SCR D1 class

Specifications
Specifications
Configuration:;
• Whyte	0-4-2T
• UIC	B1
Gauge	4 ft 8+1⁄2 in (1,435 mm) standard gauge
Driver dia.	5 ft 6 in (1.676 m)
Trailing dia.	4 ft 6 in (1.372 m)
Wheelbase	15 ft 0 in (4.57 m)
Adhesive weight	27 long tons (27.4 t; 30.2 short tons)
Loco weight	38.15 long tons (38.76 t; 42.73 short tons)
Fuel type	Coal
Fuel capacity	1.5 long tons (1.5 t; 1.7 short tons)
Water cap.	860 imperial gallons (3,900 L; 1,030 US gal)
Firebox:
• Grate area	15 sq ft (1.4 m2)
Boiler pressure	140 psi (9.7 bar; 0.97 MPa) ; 150 psi (10 bar; 1.0 MPa) (later)
Heating surface	1,029 sq ft (95.6 m2)
Cylinders	Two, inside
Cylinder size	17 in × 24 in (432 mm × 610 mm)

Type and origin
Type and origin
Power type	Steam
Designer	William Stroudley
Builder	Brighton works (90),; Neilson & Co. (35)
Build date	1873–1887
Total produced	125

LB&SCR D1 Class
LB&SCR D1 Class
	D1 class, 230 Brookhouse, as built
Power type
Type and origin
Power type	Steam
Designer	William Stroudley
Builder	Brighton works (90),; Neilson & Co. (35)
Build date	1873–1887
Total produced	125
Configuration:;
Specifications
Configuration:;
• Whyte	0-4-2T
• UIC	B1
Gauge	4 ft 8+1⁄2 in (1,435 mm) standard gauge
Driver dia.	5 ft 6 in (1.676 m)
Trailing dia.	4 ft 6 in (1.372 m)
Wheelbase	15 ft 0 in (4.57 m)
Adhesive weight	27 long tons (27.4 t; 30.2 short tons)
Loco weight	38.15 long tons (38.76 t; 42.73 short tons)
Fuel type	Coal
Fuel capacity	1.5 long tons (1.5 t; 1.7 short tons)
Water cap.	860 imperial gallons (3,900 L; 1,030 US gal)
Firebox:
• Grate area	15 sq ft (1.4 m2)
Boiler pressure	140 psi (9.7 bar; 0.97 MPa) ; 150 psi (10 bar; 1.0 MPa) (later)
Heating surface	1,029 sq ft (95.6 m2)
Cylinders	Two, inside
Cylinder size	17 in × 24 in (432 mm × 610 mm)
Tractive effort
Performance figures
Tractive effort	13,399 lbf (59.60 kN)
Operators
Career
Operators	LB&SCR; Southern Railway; British Railways;
Class	D1
Power class	BR: 0P
Nicknames	"D-Tanks"
Locale	Southern Region
First run	1873
Withdrawn	1903–51
Disposition	All scrapped

The LB&SCR D1 class were powerful 0-4-2 suburban passenger tank locomotives, designed by William Stroudley of the London Brighton and South Coast Railway in 1873. They were originally known as "D-tanks" but later reclassified as class D1. Members of this very successful class survived in service until 1951.