GWR 3511 class

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GWR 3511 to 3520
Type and origin
Power typeSteam
DesignerWilliam Dean
BuilderGWR Swindon
Order number64 (part)
Serial number1016–1025
Build date1885
Total produced10
Specifications
Configuration:
 • Whyte2-4-0T
 • UIC1B
Gauge4 ft 8+12 in (1,435 mm)
Leading dia.3 ft 7 in (1.092 m)
Driver dia.5 ft 1 in (1.549 m)
Wheelbase17 ft 0 in (5.182 m)
Fuel typeCoal
Heating surface:
 • Firebox103.29 sq ft (9.596 m2)
 • Tubes1,106.57 sq ft (102.804 m2)
 • Total surface1,209.86 sq ft (112.400 m2)
SuperheaterNone
CylindersTwo, inside
Cylinder size17 in × 26 in (432 mm × 660 mm)
Valve gearStephenson
Train heatingSteam
Career
OperatorsGWR

The GWR 3511 class were standard gauge 2-4-0T locomotives designed by William Dean for the Great Western Railway and built in 1885.

History[edit]

They comprised the last ten of the twenty locomotives of Lot 64. The first ten locomotives of this Lot were built to the broad gauge as the 3501 class.

Use[edit]

Originally built with condensing apparatus they were used on work through the Severn Tunnel until the ventilation was improved.[1]

Rebuilding[edit]

The condensing apparatus was soon removed and in 1894/5 they were all rebuilt as 2-4-0 tender locomotives of the 3201 class as were the 3501 class.

References[edit]

  1. ^ Holcroft (1957), p. 59.
  • Allcock, N. J.; Davies, F. K.; le Fleming, H. M.; Maskelyne, J. N.; Reed, P. J. T.; Tabor, F. J. (1968) [1951]. White, D. E. (ed.). The Locomotives of the Great Western Railway, part one: Preliminary Survey. Kenilworth: RCTS.
  • Tabor, F. J. (August 1959). White, D. E. (ed.). The Locomotives of the Great Western Railway, part six: Four-Coupled Tank Engines. RCTS. ISBN 0-901115-36-3.
  • Holcroft, Harold (1957). An Outline of Great Western Locomotive Practice 1837-1947. Shepperton, Surrey, UK: Ian Allan Ltd. ISBN 0-7110-0228-2.