Furness Railway 115 class

The Furness Railway 115 class (unofficially classified N1 by Bob Rush), was a class of five 4-6-4 (or Baltic) tank locomotives of the Furness Railway. They were designed by David Rutherford and built by Kitson and Company in 1920–1921. They were nicknamed "Jumbos" and the author Bob Rush gave them the unofficial classification N1. Their main duty was to haul express passenger trains between Carnforth and Whitehaven.

Furness Railway 115 class
FR 115 class
Type and origin Power type Steam Designer David Rutherford Builder Kitson and Company Serial number 5292–5296 Build date 1920-1921 Total produced 5
Specifications Configuration: ​  • Whyte 4-6-4T  • UIC 2′C2′ n2t Gauge 4 ft 8+1⁄2 in (1,435 mm) Driver dia. 5 ft 8 in (1.727 m) Trailing dia. 3 ft 2 in (0.965 m) Wheelbase 40 ft 9 in (12.421 m) Height 13 ft 6 in (4.115 m) Loco weight 92.75 long tons (94.24 t) Fuel type Coal Water cap. 2,800 imp gal (13,000 L; 3,400 US gal) Boiler pressure 170 psi (1.17 MPa) Cylinders Two, inside Cylinder size 19+1⁄2 in × 26 in (495 mm × 660 mm) Valve gear Stephenson
Performance figures Tractive effort 21,006 lbf (93.44 kN)
Career Operators Furness Railway → London, Midland and Scottish Railway Class FR: 115 Power class LMS: 3P Numbers FR: 115-119 LMS: 11100–11104 Withdrawn 1934–1935, 1940 Disposition All scrapped

They were the only Baltic tank locomotives in Britain with inside cylinders, and the only ones to lack a superheater.

LMS ownership

All five passed to the London, Midland and Scottish Railway at the Grouping in 1923. The LMS gave them the classification 3P. All but one were withdrawn between 1934 and 1935, with the final member being withdrawn in 1940. All members of the class were scrapped.

Numbering

Table of locomotives

Date new	FR number	LMS number	Date Withdrawn
1920	115	11100	July 1935
1920	116	11101	July 1935
1920	117	11102	November 1934
1920	118	11103	1940
1921	119	11104	May 1935

See also

• Locomotives of the Furness Railway

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

External links

• Photograph of 115