GWR 1101 Class
No. 1105 at Danygraig Depot 1946
Type and origin Power type Steam Designer Charles Collett Builder Avonside Engine Company Order number GWR lot 246 Serial number 1987–1992 Build date 1926 Total produced 6
Specifications Configuration: ​  • Whyte 0-4-0T  • UIC B n2t Gauge 4 ft 8+1⁄2 in (1,435 mm) standard gauge Driver dia. 3 ft 9+1⁄2 in (1.156 m) Wheelbase 6 ft 6 in (1.98 m) Length 25 ft 5+1⁄2 in (7.76 m) over buffers Width 8 ft 8 in (2.642 m) Height 11 ft 10 in (3.607 m) Axle load 19 long tons 8 cwt (43,500 lb or 19.7 t) (21.7 short tons) full Loco weight 38 long tons 4 cwt (85,600 lb or 38.8 t) (42.8 short tons) full Fuel type Coal Water cap. 1,000 imp gal (4,500 L; 1,200 US gal) Firebox: ​  • Grate area 12.5 sq ft (1.16 m2) Boiler pressure 170 lbf/in2 (1.17 MPa) Heating surface: ​  • Firebox 76 sq ft (7.1 m2)  • Tubes 788 sq ft (73.2 m2)  • Total surface 864 sq ft (80.3 m2) Cylinders Two, outside Cylinder size 16 in × 24 in (406 mm × 610 mm)
Performance figures Tractive effort 19,510 lbf (86.8 kN)
Career Operators GWR » BR Power class GWR: B Numbers 1101–1106 Axle load class GWR: Red Withdrawn 1959–1960 Disposition All scrapped

The GWR 1101 Class was a class of 0-4-0T side tank steam locomotives built by the Avonside Engine Company to the order of the Great Western Railway in 1926 as dock shunters.

They passed into British Railways ownership in 1948 and were numbered 1101–1106.

All were withdrawn and scrapped between 1959 and 1960.

• Ian Allan ABC of British Railways Locomotives, winter 1957/8 edition, part 1, page 24
• Whitehurst, Brian (1973). Great Western Engines, Names, Numbers, Types and Classes (1940 to Preservation). Oxford, UK: Oxford Publishing Company. pp. 17, 102, 142. ISBN 978-0-9028-8821-0. OCLC 815661.

• Model of 1101 Class dock tank
• Rail UK database entry

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