British Rail Class 12

Specifications
Specifications
Configuration:;
• Whyte	0-6-0DE
• UIC	C
Gauge	4 ft 8+1⁄2 in (1,435 mm) standard gauge
Wheel diameter	4 ft 6 in (1.372 m)
Wheelbase	11 ft 6 in (3.51 m)
Length	29 ft 5+1⁄2 in (8.98 m)
Width	9 ft 0 in (2.74 m)
Height	12 ft 8+1⁄2 in (3.87 m)
Loco weight	48 long tons (48.8 t; 53.8 short tons)
Fuel capacity	660 imp gal (3,000 L; 790 US gal)
Prime mover	English Electric 6KT
Generator	English Electric 801/7D (DC)
Traction motors	English Electric 506A, 2 off
Transmission	Diesel electric, double reduction gearing
MU working	Not fitted
Train heating	None
Train brakes	None; 15230–15232 Air from 1970

Type and origin
Type and origin
Power type	Diesel-electric
Builder	British Railways Ashford Works
Order number	SR 3413 (15), 3537 (11)
Build date	1949–1952
Total produced	26

British Rail Class 12
British Rail Class 12
	15224 at Spa Valley Railway, Tunbridge Wells West depot 31 July 2011
Power type
Type and origin
Power type	Diesel-electric
Builder	British Railways Ashford Works
Order number	SR 3413 (15), 3537 (11)
Build date	1949–1952
Total produced	26
Configuration:;
Specifications
Configuration:;
• Whyte	0-6-0DE
• UIC	C
Gauge	4 ft 8+1⁄2 in (1,435 mm) standard gauge
Wheel diameter	4 ft 6 in (1.372 m)
Wheelbase	11 ft 6 in (3.51 m)
Length	29 ft 5+1⁄2 in (8.98 m)
Width	9 ft 0 in (2.74 m)
Height	12 ft 8+1⁄2 in (3.87 m)
Loco weight	48 long tons (48.8 t; 53.8 short tons)
Fuel capacity	660 imp gal (3,000 L; 790 US gal)
Prime mover	English Electric 6KT
Generator	English Electric 801/7D (DC)
Traction motors	English Electric 506A, 2 off
Transmission	Diesel electric, double reduction gearing
MU working	Not fitted
Train heating	None
Train brakes	None; 15230–15232 Air from 1970
Maximum speed
Performance figures
Maximum speed	27.5 mph (44.3 km/h)
Power output	Engine: 350 hp (261 kW)
Tractive effort	Maximum: 24,600 lbf (109.4 kN)
Operators
Career
Operators	British Railways
Class	D3/13, later 3/9, later Class 12
Numbers	15211–15236
Axle load class	RA 5
Withdrawn	1968-1971
Preserved	15224 at the Spa Valley Railway
Disposition	One preserved, remainder scrapped
	References:

The British Rail Class 12 is a diesel locomotive built primarily for shunting duties around London.