Highland Railway O Class Contents Dimensions Numbering Rebuilding Transfer to LMS References Navigation menue

Highland Railway locomotives4-4-0T locomotivesRailway locomotives introduced in 1878


2-4-0Ttank engines4-4-0TsDavid JonesLochgorm Works4-4-0TsLondon, Midland and Scottish RailwayGrouping





Highland Railway O class










Type and origin
Power typeSteam
DesignerDavid Jones
Builder
HR Lochgorm Works
Build date1878–1879
Total produced3
























Specifications
Configuration:
​
 • Whyte

2-4-0T (rebuilt as 4-4-0T)
 • UIC
1′B t, rebuilt as 2′B t
Gauge
4 ft 8 1⁄2 in (1,435 mm)
Leading dia.
New: 3 ft 9 1⁄2 in (1.156 m)
Rebuilt: 2 ft 7 1⁄2 in (0.800 m)

Driver dia.		4 ft 9 in (1.448 m)
Loco weight
New: 36 long tons 0 cwt (80,600 lb or 36.6 t)
Rebuilt: 44 long tons 0 cwt (98,600 lb or 44.7 t)
Boiler pressure140 lbf/in2 (0.97 MPa)
Heating surface913 sq ft (84.8 m2)
CylindersTwo, outside
Cylinder size16 in × 22 in (406 mm × 559 mm)
Valve gearAllan


Performance figures
Tractive effort12,158 lbf (54.08 kN)








Career
Operators
Highland Railway →
London, Midland & Scottish
ClassHR: O
Power classLMS: unclassified
Withdrawn1928–1932

The Highland Railway O Class locomotives were built as 2-4-0T tank engines, but were soon rebuilt as 4-4-0Ts. They were designed by David Jones and three were built at the company's Lochgorm Works in 1878 and 1879.




Contents





  • 1 Dimensions


  • 2 Numbering


  • 3 Rebuilding


  • 4 Transfer to LMS


  • 5 References




Dimensions


They had 4-foot-9-inch (1,448 mm) coupled wheels, 16-by-22-inch (406 by 559 mm) outside cylinders and weight (in original condition) of 36 tons.



Numbering



























Table of locomotives
HR No.NameDate builtLMS No.WithdrawnNotes
58BurgheadDecember 1878150111928Name removed in 1900. Renumbered 58A in 1912 and 58B in 1920
59HighlanderJune 1879150101933Name removed in 1900. Renumbered 59A in 1912 and 59B in 1920
17BreadalbaneDecember 1879150121929Renamed Aberfeldy in 1886; name removed in 1900. Renumbered 50 in 1901, 50A in 1912, 50B in 1920


Rebuilding


They were rebuilt as 4-4-0Ts in 1881–82 due to trouble with the single leading axle.



Transfer to LMS


All three were still in service in 1923, although relegated to shunting duties, and they were transferred to the London, Midland and Scottish Railway (LMS) at the Grouping.



References



  • Baxter, Bertram (1984). Baxter, David, ed. British Locomotive Catalogue 1825–1923, Volume 4: Scottish and remaining English Companies in the LMS Group. Ashbourne, Derbyshire: Moorland Publishing Company. p. 195..mw-parser-output cite.citationfont-style:inherit.mw-parser-output .citation qquotes:"""""""'""'".mw-parser-output .citation .cs1-lock-free abackground:url("//upload.wikimedia.org/wikipedia/commons/thumb/6/65/Lock-green.svg/9px-Lock-green.svg.png")no-repeat;background-position:right .1em center.mw-parser-output .citation .cs1-lock-limited a,.mw-parser-output .citation .cs1-lock-registration abackground:url("//upload.wikimedia.org/wikipedia/commons/thumb/d/d6/Lock-gray-alt-2.svg/9px-Lock-gray-alt-2.svg.png")no-repeat;background-position:right .1em center.mw-parser-output .citation .cs1-lock-subscription abackground:url("//upload.wikimedia.org/wikipedia/commons/thumb/a/aa/Lock-red-alt-2.svg/9px-Lock-red-alt-2.svg.png")no-repeat;background-position:right .1em center.mw-parser-output .cs1-subscription,.mw-parser-output .cs1-registrationcolor:#555.mw-parser-output .cs1-subscription span,.mw-parser-output .cs1-registration spanborder-bottom:1px dotted;cursor:help.mw-parser-output .cs1-ws-icon abackground:url("//upload.wikimedia.org/wikipedia/commons/thumb/4/4c/Wikisource-logo.svg/12px-Wikisource-logo.svg.png")no-repeat;background-position:right .1em center.mw-parser-output code.cs1-codecolor:inherit;background:inherit;border:inherit;padding:inherit.mw-parser-output .cs1-hidden-errordisplay:none;font-size:100%.mw-parser-output .cs1-visible-errorfont-size:100%.mw-parser-output .cs1-maintdisplay:none;color:#33aa33;margin-left:0.3em.mw-parser-output .cs1-subscription,.mw-parser-output .cs1-registration,.mw-parser-output .cs1-formatfont-size:95%.mw-parser-output .cs1-kern-left,.mw-parser-output .cs1-kern-wl-leftpadding-left:0.2em.mw-parser-output .cs1-kern-right,.mw-parser-output .cs1-kern-wl-rightpadding-right:0.2em


  • Casserley, H. C. & Johnston, Stuart W. (1974) [1966]. Locomotives at the Grouping 3: London, Midland and Scottish Railway. Shepperton, Surrey: Ian Allan. p. 153. ISBN 0-7110-0554-0.

  • H. A. Vallance (1938) The Highland Railway










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