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LB&SCR I1 class
Class of 20 two-cylinder 4-4-2T locomotives

The LB&SCR I1 class was a class of 4-4-2 steam tank locomotives designed by D. E. Marsh for suburban passenger service on the London, Brighton and South Coast Railway.

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History

This class was intended to haul secondary passenger trains,1 especially in the south London suburbs, and twenty locomotives were constructed by Brighton works between June 1906 and December 1907.2 The locomotives proved to be reliable but with disappointing performance in their original form, being poor steamers,3 but all of them passed to the Southern Railway in 1923.4 They reportedly gained the nickname "Wankers" due to the aforementioned steaming issues, but were also known as 'Wealden Tanks'.5

I1X class

Between 1925 and 1932 they were rebuilt by Richard Maunsell with spare boilers left over after the rebuilding of the B4 and I3 classes.6 The rebuilt engines were designated I1x class,7 and these new larger boilers greatly improved their performance.

Withdrawals

Two worn-out members of the class were withdrawn by the Southern Railway in 1944 and 1946 respectively, but the remainder survived into British Railways (BR) ownership in 1948, although all had been withdrawn by July 1951 and none have been preserved.8

Numbering

The first ten were numbered 595–604 and the second ten were numbered 1–10.9 The Southern Railway initially added a "B" prefix to these numbers and later renumbered them 2595–2604 and 2001–2010. BR added 30000 to the numbers but it is believed that only 32005 actually carried its number.10

Locomotive Summary

I1/I1X class locomotive fleet summary
LBSCNo.1st SRNo.2nd SRNo.BRNo.DateBuiltDateRebuiltWithdrawn
1B1200132001June 1907December 1931July 1948
2B2200232002July 1907May 1931July 1951
3B3200332003July 1907September 1931July 1948
4B4200432004June 1907January 1932November 1948
5B5200532005August 1907August 1931June 1951
6B6200632006September 1907February 1932September 1948
7B7200732007October 1907October 1931September 1948
8B8200832008October 1907February 1931June 1951
9B9200932009November 1907December 1929April 1951
10B10201032010December 1907October 1929September 1948
595B595259532595September 1906January 1927June 1951
596B596259632596November 1906July 1925June 1951
597B5972597–December 1906May 1928December 1946
598B598259832598January 1907November 1925September 1948
599B599259932599February 1907October 1928September 1948
600B6002600–March 1907May 1927October 1944
601B601260132601April 1907February 1928January 1948
602B602260232602April 1907December 1926June 1951
603B603260332603June 1907August 1928April 1951
604B604260432604April 1907August 1927September 1948

Notes

Sources

  • Bradley, D.L. (September 1974). The locomotives of the London Brighton and South Coast Railway, Part 3. London: RCTS.
  • Dendy Marshall, C. F., History of the Southern Railway, Ian Allan 1988, page 270, ISBN 0-7110-0059-X

References

  1. Bradley 1974, p. 75. - Bradley, D.L. (September 1974). The locomotives of the London Brighton and South Coast Railway, Part 3. London: RCTS. ↩

  2. Bradley 1974, p. 75. - Bradley, D.L. (September 1974). The locomotives of the London Brighton and South Coast Railway, Part 3. London: RCTS. ↩

  3. Bradley 1974, p. 76. - Bradley, D.L. (September 1974). The locomotives of the London Brighton and South Coast Railway, Part 3. London: RCTS. ↩

  4. Bradley 1974, p. 78. - Bradley, D.L. (September 1974). The locomotives of the London Brighton and South Coast Railway, Part 3. London: RCTS. ↩

  5. Bradley 1974, p. 79. - Bradley, D.L. (September 1974). The locomotives of the London Brighton and South Coast Railway, Part 3. London: RCTS. ↩

  6. Bradley 1974, pp. 78–79. - Bradley, D.L. (September 1974). The locomotives of the London Brighton and South Coast Railway, Part 3. London: RCTS. ↩

  7. Bradley 1974, p. 78. - Bradley, D.L. (September 1974). The locomotives of the London Brighton and South Coast Railway, Part 3. London: RCTS. ↩

  8. Bradley 1974, p. 80. - Bradley, D.L. (September 1974). The locomotives of the London Brighton and South Coast Railway, Part 3. London: RCTS. ↩

  9. Bradley 1974, p. 75. - Bradley, D.L. (September 1974). The locomotives of the London Brighton and South Coast Railway, Part 3. London: RCTS. ↩

  10. Bradley 1974, p. 80. - Bradley, D.L. (September 1974). The locomotives of the London Brighton and South Coast Railway, Part 3. London: RCTS. ↩