GWR 3511 class

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Nos 3511 to 3520
Type and origin
Power type Steam
Designer William Dean
Builder GWR Swindon
Order number 64 (part)
Build date 1885
Total produced 10
Specifications
Configuration:
 • Whyte 2-4-0T
 • UIC 1B
Gauge 4 ft 8 12 in (1,435 mm)
Leading dia. 3' 7"
Driver dia. 5' 1"
Wheelbase 17 ft 0 in
Fuel type Coal
Heating surface 1209.86 sq. ft
 • Tubes 1106.57 sq. ft
 • Firebox 103.29 sq. ft
Superheater None
Cylinders Two, inside
Cylinder size 17 in x 26 in
Valve gear Stephenson
Train heating Steam
Career
Operators GWR

The GWR 3511 class were standard gauge 2-4-0 side tank 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, H (1957). An Outline of Great Western Locomotive Practice 1837-1947. Shepperton, Surrey, UK: Ian Allan Ltd. p. 59. ISBN 0-7110-0228-2. 
  • The Locomotives of the Great Western Railway, Part 6: Four Coupled Tank Engines. The Railway Correspondence and Travel Society 1959. ISBN 0-901115-36-3.