GS&WR Class 500

The Great Southern and Western Railway (GS&WR) Class 500 were 4-6-0 locomotives intended for mixed-traffic work. The lead member of the class was built in 1924 under the GS&WR, the remaining two in 1926 under the amalgamated grouping of the Great Southern Railways (GSR).[2]:245—246

GS&WR 500 Class
Type and origin
Power typeSteam
DesignerJ. R. Bazin
BuilderInchicore Works
Build date1924—1926
Total produced3
Specifications
Configuration:
​
 • Whyte4-6-0
Gauge5 ft 3 in (1,600 mm)
Leading dia.3 ft 0 in (910 mm)
Driver dia.5 ft 8 1⁄2 in (1,740 mm)
Wheelbase:
 • Engine		37 ft 1 1⁄4 in (11,309 mm)
Loco weight74.5 long tons (75.7 t)
Career
OperatorsGreat Southern & Western Railway (GW&SR)
Great Southern Railways (GSR)
CIÉ
Power classB1[1]
Number in class3
Numbers500—502
LocaleIreland
Withdrawn1955—1957

Design

The locomotive was designed by J. R. Bazin who sought to avoid some issues with the unrebuilt GS&WR 400 Class and was aimed at being a mixed-tyraffic type. Use of a valve travel of 6 3⁄4 inches (170 mm) and a 1 1⁄2 inches (38 mm) lap was a significant contributor to the performance of the type. The boiler was interchangeable with the existing GS&WR 400 Class. [2]:245—246

Service

Although a mixed-traffic type the engines could and were often used used on passenger services which were the domain of the GS&WR 400 Class. It was pointed out in a 1948 report their smaller wheels made them unsuitable for that work and they should be allocated to goods and night mails.[2]:245—246

Livery

The locomotives were pained in Standard GS&WR/GSR Livery.

Model

A model by C.R.H Wilson at 1:8 scale ratio was held by the Thinktank museum in Birmingham, United Kingdom. As of 2008 it was not on display. Construction for the model began in 1929 and took over 10 years. Whilst capable of live steam it is understood not to have been steamed because of the extreme detailing of the model for the period. There is a story Wilson chose this locomotive as only Bazin was prepared to provide him with drawings of the required detail, whilst other railway companies in the United Kingdom were not prepared to do so.[2]:380

gollark: It's too stringy, unsafe (not in the memory-safety way), lacking useful constructs from any modern language ever (USABLE ARRAYS?!), and... well, that's it really.
gollark: systemd makes them unable to do stuff like have memory be writable and executable at once, gain extra capabilities, see most system folders and /home, and such.
gollark: And shell is an atrociously awful language in my opinion.
gollark: Well, many of my services have sandboxing applied now.
gollark: Much nicer than ineffable shell scripts.

References
  1. Boocock, Colin (1 October 2009). "Locomotive Compendium Ireland" (1st ed.). Ian Allan. p. 14. ISBN 9780711033603.
  2. Clements, Jeremy; McMahon, Michael (2008). Locomotives of the GSR. Colourpoint Books. ISBN 9781906578268.
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