GWR 3206 Class

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GWR 3206 Class
Type and origin
Power type Steam
Designer William Dean
Builder GWR
Build date 1889
Total produced 20
Specifications
Configuration 2-4-0
Gauge 4 ft 8 12 in (1,435 mm)
Driver diameter 6 ft 1.5 in (1.867 m)
Fuel type coal
Cylinders two inside
Cylinder size 18 in x 24 in
(432 mm x 610 mm)

The 3206 or Barnum Class consisted of 20 locomotives built at Swindon Works for the Great Western Railway in 1889, and was William Dean's most successful 2-4-0 design. Numbered 3206-3225, they were the last GWR locos built with "sandwich" frames (outside frames consisting of timber between two sheets of steel).

Alterations[edit]

They underwent various alterations during their working lives, such as thicker tyres giving slightly larger wheels, the gradual adoption of cylinders with a 26" stroke, and larger diameter boilers of various sorts, as was usual at this period. In 1910-15 some of the class received taller chimneys resembling those of the Dean Singles.

Use[edit]

The Barnums were "express mixed traffic engines" and to start with worked from Swindon to Gloucester and South Wales, and to Weymouth. A few subsequently went to the Northern Division, but in the early 20th century most were at Bristol, Oxford, Swindon and Westbury. By the 1920s they were reduced to branch-line work, apart from a brief spell on the Cambrian main line, and all were withdrawn by early 1937.[1]

References[edit]

  1. ^ Tabor 1956, pp. D38-D40.

Source[edit]

  • Tabor, F.J. (February 1956). White, D.E., ed. The Locomotives of the Great Western Railway, part four: Six-wheeled Tender Engines. Kenilworth: RCTS.