GSR Class 700

The Great Southern Railways (GSR) Class 700 consisted of five 0-6-0 locomotives built by Inchicore railway works in 1929 and were the last locomotives designed by J. R. Bazin.[1]:263—264

GSR 700 Class
Type and origin
Power typeSteam
DesignerJ. R. Bazin
BuilderInchicore
Build date1929
Total produced5
Specifications
Configuration:
​
 • Whyte0-6-0
Gauge5 ft 3 in (1,600 mm)
Driver dia.5 ft 1 3⁄4 in (1,568 mm)
Length25 ft 3 3⁄4 in (7,715 mm)
Loco weight41 long tons (42 t)
Water cap3,345 imp gal (15,210 l; 4,017 US gal)
Boiler pressure160 lbf/in2 (1.10 MPa)
Cylinders2
Cylinder size18 in × 24 in (457 mm × 610 mm)
Performance figures
Tractive effort17,130 lbf (76.20 kN)
Career
OperatorsGreat Southern Railways (GSR)
CIÉ
ClassJ15a (Inchicore)
Power classJ
Number in class5
Numbers700-704
LocaleIreland
Withdrawn1955—1963
[1]:263—264

The design was more traditional with a saturated rather than superheated boiler and with slide valves as opposed to piston valves. The tenders used initially were those reallocated from withdrawn 360 class 4-6-0. A more modern feature was underslung springs.[1]:263—264

Operationally the need for the class has subsequently been questioned and speculation has arisen that it was to use up surplus type 60 boilers.[1]:263—264

This class seems to have compared poorly with the older 101 class when especially when the latter were fitted with superheated boilers, possibly due to an inadequate heating surface leading to high coal and water consumption.[1]:263—264

References
  1. Clements, Jeremy; McMahon, Michael (2008). Locomotives of the GSR. Colourpoint Books. ISBN 9781906578268.
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