GWR 3600 Class

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GWR 3600 class

Type and origin

Power type
Steam

Designer
William Dean

Builder
Swindon Works

Order number
Lots 130, 134, 143

Build date
1900–1903

Total produced
31

Specifications

Configuration
2-4-2T

UIC class
1′B1′

Gauge
4 ft 8 1⁄2 in (1,435 mm) standard gauge

Leading dia.
3 ft 8 in (1.118 m)

Driver dia.
5 ft 2 in (1.575 m)

Trailing dia.
3 ft 8 in (1.118 m)

Fuel type
Coal

Fuel capacity
3 long tons (3.0 t; 3.4 short tons)

Water cap
1,900 imp gal (8,600 l; 2,300 US gal)

Boiler pressure
200 lbf/in2 (1.38 MPa)

Cylinders
Two, inside

Cylinder size
17 in × 24 in (432 mm × 610 mm)

Performance figures

Tractive effort
19,020 lbf (84.61 kN)

Career

Operators
Great Western Railway

Withdrawn
October 1930 – November 1934

Disposition
All scrapped

The Great Western Railway (GWR) 3600 Class was a class of 2-4-2T side tank steam locomotive, designed by William Dean and built at Swindon in three lots in 1900-1903:

Contents

1 Construction
2 History
3 Use
4 References
5 Sources
6 External links

Construction[edit]

11 (renumbered 3600) (Lot 130, 1900)
3601–3620 (Lot 134, 1902)
3621–3630 (Lot 143, 1903)

History[edit]
Dean had built an experimental 2-4-2T numbered 11, whose success led to the cancellation of another batch of 2-4-0 “Metro” Tanks and the construction of the 3600s in their place. The new 2-4-2Ts had 5 ft 2 in (1.575 m) coupled wheels and 17 in × 24 in (432 mm × 610 mm) cylinders. The second batch were slightly longer than the prototype, resulting in greater tank capacity, and the third lot, delivered under Churchward, were slightly larger again, and had taper boilers. The class gained the nickname “Birdcage” due to their (for the GWR) unusually spacious cabs.
Use[edit]
The 3600 class were fitted with steam reversing gear, steam brakes, and two steam-operated water pick-ups for forward and reverse working. This reflects their intended work as fast suburban engines. About half were employed on such duties in the Birmingham area. The rest worked in the London are