GWR steam rail motors

Specifications
Specifications
Configuration:;
• Whyte	0-4-0+4TR (power bogie)
Gauge	standard gauge
Coupled dia.	4 ft 0 in (1.219 m)
Wheelbase	8 ft 0 in (2.438 m)
• Coupled	3 ft 8 in (1.118 m)
• Trailing	3 ft 7 in (1.092 m) (unpowered bogie)
Length:;
• Over headstocks	57 ft 0+3⁄4 in (17.393 m)
Width	8 ft 6+3⁄4 in (2.610 m)
Height	13 ft 4+1⁄2 in (4.077 m)
Fuel capacity	0.5 t; 0.6 short tons
Water cap.	450 imp gal (2,000 L; 540 US gal)
Firebox:
• Grate area	11.46 sq ft (1.065 m2)
Boiler:;
• Model	Fire tube
• Type	Vertical
• Diameter	4 ft 6 in (1.372 m)–6 ft 0 in (1.829 m)
• Tube plates	4 ft 4+3⁄4 in (1.340 m)
• Small tubes	477 x 1+1⁄8 in (0.029 m)
Boiler pressure	140 psi (0.97 MPa)
Heating surface:
• Firebox	44.34 sq ft (4.119 m2)
• Tubes	625.58 sq ft (58.118 m2)
• Total surface	669.92 sq ft (62.238 m2)
Cylinders	2
Cylinder size	12 in × 16 in (305 mm × 406 mm)

Type and origin
Type and origin
Power type	Steam
Designer	George Jackson Churchward
Builder	GWR Swindon Works; Kerr, Stuart and Company; Gloucester Railway Carriage and Wagon Company;
Build date	1903–1908
Total produced	99

GWR steam railmotor
(dimensions from No. 2)
GWR steam railmotor; (dimensions from No. 2)
	No. 93 after restoration in 2013
Power type
Type and origin
Power type	Steam
Designer	George Jackson Churchward
Builder	GWR Swindon Works; Kerr, Stuart and Company; Gloucester Railway Carriage and Wagon Company;
Build date	1903–1908
Total produced	99
Configuration:;
Specifications
Configuration:;
• Whyte	0-4-0+4TR (power bogie)
Gauge	standard gauge
Coupled dia.	4 ft 0 in (1.219 m)
Wheelbase	8 ft 0 in (2.438 m)
• Coupled	3 ft 8 in (1.118 m)
• Trailing	3 ft 7 in (1.092 m) (unpowered bogie)
Length:;
• Over headstocks	57 ft 0+3⁄4 in (17.393 m)
Width	8 ft 6+3⁄4 in (2.610 m)
Height	13 ft 4+1⁄2 in (4.077 m)
Fuel capacity	0.5 t; 0.6 short tons
Water cap.	450 imp gal (2,000 L; 540 US gal)
Firebox:
• Grate area	11.46 sq ft (1.065 m2)
Boiler:;
• Model	Fire tube
• Type	Vertical
• Diameter	4 ft 6 in (1.372 m)–6 ft 0 in (1.829 m)
• Tube plates	4 ft 4+3⁄4 in (1.340 m)
• Small tubes	477 x 1+1⁄8 in (0.029 m)
Boiler pressure	140 psi (0.97 MPa)
Heating surface:
• Firebox	44.34 sq ft (4.119 m2)
• Tubes	625.58 sq ft (58.118 m2)
• Total surface	669.92 sq ft (62.238 m2)
Cylinders	2
Cylinder size	12 in × 16 in (305 mm × 406 mm)
Tractive effort
Performance figures
Tractive effort	6,398 lbf (28.46 kN)
Preserved
Career
Preserved	1
Disposition	98 scrapped

The steam rail motors (SRM) were self-propelled carriages operated by the Great Western Railway in England and Wales from 1903 to 1935. They incorporated a steam locomotive within the body of the carriage.