GWR 6800 Class

Specifications
Specifications
Configuration:;
• Whyte	4-6-0
• UIC	2′C h2
Gauge	4 ft 8+1⁄2 in (1,435 mm) standard gauge
Leading dia.	3 ft 0 in (0.914 m)
Driver dia.	5 ft 8 in (1.727 m)
Minimum curve	8 chains (530 ft; 160 m) normal,; 7 chains (460 ft; 140 m) slow
Length	63 ft 0+1⁄4 in (19.21 m)
Width	8 ft 11+1⁄4 in (2.724 m)
Height	13 ft 0 in (3.962 m)
Axle load	18 long tons 8 cwt (41,200 lb or 18.7 t); (20.6 short tons)
Adhesive weight	55 long tons 2 cwt (123,400 lb or 56 t); (61.7 short tons)
Loco weight	74 long tons 0 cwt (165,800 lb or 75.2 t); (82.9 short tons) full
Fuel type	Coal
Fuel capacity	7 long tons 0 cwt (15,700 lb or 7.1 t); (7.8 short tons)
Water cap.	3,500 imp gal (16,000 L; 4,200 US gal)
Firebox:
• Grate area	27.07 sq ft (2.515 m2)
Boiler	GWR Standard No. 1
Boiler pressure	225 psi (1.55 MPa)
Heating surface:
• Firebox	154.78 sq ft (14.380 m2)
• Tubes and flues	1,686.60 sq ft (156.690 m2)
Superheater:;
• Heating area	4-element: 191.8 sq ft (17.82 m2),; 6-element: 253.38 sq ft (23.540 m2)
Cylinders	Two, outside
Cylinder size	18.5 in × 30 in (470 mm × 762 mm)

Type and origin
Type and origin
Power type	Steam
Designer	Charles Collett
Builder	Great Western Railway Swindon Works
Order number	Lot 308
Build date	1936–1939, 2024
Total produced	80

Great Western Railway 6800 Class
Great Western Railway 6800 Class
	6877 Llanfair Grange at Exeter St Davids in 1958
Power type
Type and origin
Power type	Steam
Designer	Charles Collett
Builder	Great Western Railway Swindon Works
Order number	Lot 308
Build date	1936–1939, 2024
Total produced	80
Configuration:;
Specifications
Configuration:;
• Whyte	4-6-0
• UIC	2′C h2
Gauge	4 ft 8+1⁄2 in (1,435 mm) standard gauge
Leading dia.	3 ft 0 in (0.914 m)
Driver dia.	5 ft 8 in (1.727 m)
Minimum curve	8 chains (530 ft; 160 m) normal,; 7 chains (460 ft; 140 m) slow
Length	63 ft 0+1⁄4 in (19.21 m)
Width	8 ft 11+1⁄4 in (2.724 m)
Height	13 ft 0 in (3.962 m)
Axle load	18 long tons 8 cwt (41,200 lb or 18.7 t); (20.6 short tons)
Adhesive weight	55 long tons 2 cwt (123,400 lb or 56 t); (61.7 short tons)
Loco weight	74 long tons 0 cwt (165,800 lb or 75.2 t); (82.9 short tons) full
Fuel type	Coal
Fuel capacity	7 long tons 0 cwt (15,700 lb or 7.1 t); (7.8 short tons)
Water cap.	3,500 imp gal (16,000 L; 4,200 US gal)
Firebox:
• Grate area	27.07 sq ft (2.515 m2)
Boiler	GWR Standard No. 1
Boiler pressure	225 psi (1.55 MPa)
Heating surface:
• Firebox	154.78 sq ft (14.380 m2)
• Tubes and flues	1,686.60 sq ft (156.690 m2)
Superheater:;
• Heating area	4-element: 191.8 sq ft (17.82 m2),; 6-element: 253.38 sq ft (23.540 m2)
Cylinders	Two, outside
Cylinder size	18.5 in × 30 in (470 mm × 762 mm)
Tractive effort
Performance figures
Tractive effort	28,875 lbf (128.44 kN)
Operators
Career
Operators	Great Western Railway,; British Railways
Power class	GWR: D; BR: 5MT
Numbers	6800–6879
Axle load class	GWR: Red
First run	1936
Retired	1960–1965
Disposition	All original locomotives scrapped, GWR 6880 Betton Grange Operational

The Great Western Railway (GWR) 6800 Class or Grange Class is a mixed-traffic class of 4-6-0 steam locomotive, built to replace the GWR 4300 Class 2-6-0. There were 80 originally built in the class, all built at the Swindon works, using some reconditioned parts from withdrawn 4300 Class locomotives. The 81st Grange, 6880 Betton Grange, was completed in 2024 as new member of the class.