Highland Railway X Class - Train - railroad.wikisort.org

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The Highland Railway Drummond 0-6-4T or X class were large tank engines originally intended for banking duty. They were designed by Peter Drummond.

This article includes a list of references, related reading or external links, but its sources remain unclear because it lacks inline citations. (January 2015)

HR X class

Type and origin
Power type	Steam
Designer	Peter Drummond
Builder	North British Locomotive Company
Serial number	18805–18808, 19013–19016
Build date	1909–1911
Total produced	8

Specifications
Configuration:
• Whyte	0-6-4T
• UIC	C2′ n2t
Gauge	4 ft 8+1⁄2 in (1,435 mm) standard gauge
Driver dia.	5 ft 0 in (1.524 m)
Trailing dia.	3 ft 3 in (0.991 m)
Loco weight	69.0 long tons (70.1 t; 77.3 short tons)
Fuel type	Coal
Fuel capacity	4.5 long tons (4.6 t; 5.0 short tons)
Water cap.	1,970 imp gal (9,000 l; 2,370 US gal)
Firebox: • Firegrate area	22.5 sq ft (2.09 m²)
Boiler	4 ft 6+1⁄4 in (1.38 m)
Boiler pressure	180 lbf/in² (1.24 MPa)
Heating surface	1,268 sq ft (117.8 m²)
• Tubes	1,148 sq ft (106.7 m²)
• Firebox	120 sq ft (11 m²)
Cylinders	Two, inside
Cylinder size	18+1⁄2 in × 26 in (470 mm × 660 mm)

Performance figures
Tractive effort	22,082 lbf (98.23 kN)

Career
Operators	HR → LMS
Class	HR: X
Power class	LMS: 4P
Withdrawn	1932–1936
Disposition	All scrapped

Construction

The first four were built by the North British Locomotive Company and delivered in 1909. A second batch of four was delivered in 1911.

Design

The design was derived from that of the class K (0-6-0) tender engines and leading dimensions were very similar although the boiler and firebox are recorded as being 'larger' but by an unspecified amount.

Reputation

They were not popular with their crews, many thought them heavy and clumsy, and several crews had problems with water capacity. It seems their axleboxes were not well-proportioned either as there are reports of consistent hot box problems.

Numbering

HR No.	Built	LMS No.	Withdrawn	Notes
39	1909	15300	December 1936
64	1909	15301	October 1934	Renumbered 66 in 1909
65	1909	15302	August 1933	Renumbered 68 in 1909
69	1909	15303	October 1932
29	1911	15304	October 1932	Renumbered 43 in 1913
31	1911	15305	November 1934
42	1911	15306	November 1935
44	1911	15307	November 1934

Transfer to LMS

They all survived to be taken over by the London, Midland and Scottish Railway (LMS) at the 1923 Grouping. The last was withdrawn in 1936.

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. 200.
Haresnape, Brian; Rowledge, Peter (1982). Drummond Locomotives, a pictorial history. Shepperton, Surrey: Ian Allan Limited. ISBN 0-7110-1206-7.

v t e Highland Railway locomotives
W. Barclay (1855–1865)	Barclay classes
W. Stroudley (1865–1869)	0-6-0ST
D. Jones (1870–1896)	F (Duke) H (2-4-0) O (2-4-0T) L ('Skye Bogies') E (Bruce) S (Strathpeffer) D (Strath) P (‘Yankee Tank’) I (‘Jones Goods’) B (Loch)
P. Drummond (1896–1912)	C (Ben) K ('Barneys') A (Castle) V (0-6-0T) W (0-4-4T) U (New Ben) X (0-6-4T)
F. G. Smith (1912–1915)	River
C. Cumming (1915–1922)	4-4-0 Clan Clan Goods
Miscellaneous	Dunrobin (I) Dunrobin (II) Ex-Findhorn Railway 0-4-0ST

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