GWR 3150 Class

The Great Western Railway (GWR) 3150 Class was a class of 2-6-2T side tank steam locomotive.

GWR 3150 Class [1]
3171 at Gloucester (Horton Road) Depot 1948
Type and origin Power type Steam Designer Churchward Builder GWR Build date 1906 Total produced 41
Specifications Configuration: ​  • Whyte 2-6-2T Gauge 4 ft 8 ^1⁄2 in (1,435 mm) standard gauge Leading dia. 3 ft 2 in (0.965 m) Driver dia. 5 ft 8 in (1.727 m) Trailing dia. 3 ft 8 in (1.118 m) Length 41 ft 0 in (12.50 m) over buffers Loco weight 64 long tons 13 cwt (144,800 lb or 65.7 t) (65.7 t; 72.4 short tons) empty 81 long tons 12 cwt (182,800 lb or 82.9 t) (82.9 t; 91.4 short tons) full Fuel type Coal Water cap 2,000 imp gal (9,100 l; 2,400 US gal) Firebox:  • Firegrate area 20.56 sq ft (1.910 m^2) Boiler pressure 200 lbf/in^2 (1.38 MPa) Heating surface:  • Tubes 1,349.64 sq ft (125.386 m^2)  • Firebox 128.72 sq ft (11.958 m^2) Cylinders Two, outside Cylinder size 18 ^1⁄2 in × 30 in (470 mm × 762 mm) Valve gear Stephenson Valve type Piston valves Train brakes Vacuum
Performance figures Tractive effort 25,670 lbf (114.2 kN)
Career Power class 4MT Number in class 41 Numbers 3150-3190 First run 1907

History

Churchward based the 3150 class on his 3100 (later 5100) class. They used the larger and heavier Standard 4 boiler and so had greater boiler capacity, but were consequently heavier and thus restricted to Red routes. They were principally heavy suburban passenger traffic engines. Five of the class were rebuilt into the Collett 3100 Class. None of the class were preserved.

See also

• GWR 3100/5100 Class (1906)
• GWR 5101 Class
• GWR 6100 Class
• GWR 3100 Class (1938)
• GWR 8100 Class

References

1. GWR Engines - Names, Numbers, Types, Classes, ETC. of Great Western Railway Locomotives. Great Western Railway. 1938. p. 70.

External links

• The Great Western Archive
• More information