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GWR 3001 Class

From Wikipedia, the free encyclopedia

GWR 3001 Achilles Class
No. 3009 Flying Dutchman
Type and origin
Power typeSteam
DesignerWilliam Dean
BuilderGWR Swindon Works
Order numberLots 84, 86
Serial number1221–1240, 1261–1270
Build date1891–1892
Total produced30
Specifications
Configuration:
 • Whyte2-2-2
 • UIC1A1 n2
Gauge7 ft 14 in (2,140 mm) (Nos. 3021–3028)
4 ft 8+12 in (1,435 mm) standard gauge
Driver dia.7 ft 9 in (2.362 m)
Trailing dia.4 ft 7.5 in (1.410 m)
Career
OperatorsGreat Western Railway
Number in class30
Numbers3001–3030
Withdrawn1893–1894
DispositionAll converted to 3031 Class

The 3001 Class as constructed by William Dean at the Swindon Works of the Great Western Railway in 1891-2 was the culmination of the tradition of GWR 2-2-2 locomotives that had begun with Gooch's North Star over 50 years earlier. The 3001s, which had 7 ft 9 in (2.362 m) driving wheels, were built in two batches:

Table of orders and numbers[1]
Year Quantity Lot No. Works Nos. Locomotive numbers Notes
1892 20 84 1221–1240 3001–3020
1891 10 86 1261–1270 3021–3030 3021–3028 built as broad-gauge convertibles

Because of the restricted width available between the large driving wheels, these locomotives were fitted with narrow 4 ft 3 in (1.30 m) diameter boilers. In order to increase the heating surface the boilers were made longer than previous types, and were fitted with raised fireboxes.[2] Despite the fact that the broad gauge was in its very final months, new broad gauge engines were still needed to maintain services, and eight of these new engines, Nos. 3021-3028, were built (as "convertibles") with the wheels outside the frames, to run on the broad gauge. They were duly converted to "narrow" (standard) gauge in summer 1892.

These engines were too heavy at the front end, and after a derailment in 1893 it was decided to give them front bogies. Thus transformed, in 1894 the class joined the 3031 Class, considered one of the most elegant of the entire late Victorian era.[3]

References

[edit]
  1. ^ Allcock et al. (1968), p. 27.
  2. ^ Russell (1999), p. 41.
  3. ^ Tabor (1956), pp. D19-20.

Sources

[edit]
  • 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. (1956). Locomotives of the Great Western Railway, part four: Six-wheeled Tender Engines. RCTS.
  • Russell, J.H. (1999) [1975]. A Pictorial Record of Great Western Engines: Volume One:Gooch, Armstrong & Dean Locomotives. Shepperton: Ian Allan. ISBN 0-86093-398-9.