LSWR L11 class

The L11 class was one of a number of designs by Dugald Drummond incorporating a large proportion of standard parts that could be interchanged with other classes of locomotive. The boiler was interchangeable with the T9 class, and likewise was equipped with water tubes fitted across the firebox combustion space, with the aim of increasing heating surface whilst facilitating water circulation; this device however also increased maintenance costs and was soon removed by Drummond's successor, Robert Urie.

The L11 class was never equipped with a superheater as was applied to other Drummond types. The class was coupled to a six-wheeled tender as standard, although from time to time they had the Drummond eight-wheeled 'watercart' by way of tender interchange. Eight locomotives were converted to oil firing as part of government trials in 1947 to 1948.

No examples have been preserved.

Under the LSWR, the L11s were outshopped in the LSWR Passenger Sage Green livery with purple-brown edging, creating panels of green. This was further lined in white and black with 'LSWR' in gilt on the tender tank sides.

When transferred to Southern Railway ownership after 1923, the locomotives were outshopped in Richard Maunsell's darker version of the LSWR livery.Swift (2006).{{page needed|date=March 2012}} The LSWR standard gilt lettering was changed to yellow with 'Southern' on the water tank sides. The locomotives also featured black and white lining.Haresnape & Rowledge (1982).{{page needed|date=March 2012}}

File:30166 on shed.jpg

Livery after Nationalisation was initially Southern freight livery with 'British Railways' on the tender, and an 'S' prefix on the number. The class was subsequently outshopped in BR Mixed Traffic Black with red and white lining, with the BR crest on the tender.Longworth (2005).{{page needed|date=March 2012}}

Locomotive numbering was per BR standard practice, with 40 locomotives passing into British Railways ownership in 1948 and they were numbered randomly (with other LSWR classes) in the ranges 30134-30175, 30405-30414, 30435-30442. Numbering was based upon the batches built. However, thirteen of the locomotives had been withdrawn by the end of 1948, resulting in gaps in the sequence.

According to Dendy Marshall,#{{harvid, p. 176 the main differences between the K10 "Small Hoppers" and the L11 "Large Hoppers" were:

• K10, 9 foot coupling rods and C8 type boiler
• L11, 10 foot coupling rods and T9 type boiler

{{reflist}}

{{refbegin}}

• {{cite book |publisher=Ian Allan |title=ABC of British Railways Locomotives, part 2 |edition=1949}}
• {{cite book |last=Bradley |first=D. L. |year=1986 |title=LSWR Locomotives: The Drummond Classes |location=Didcot, Oxon |publisher=Wild Swan Publications |isbn=0-906867-42-8}}
• {{cite book |last1=Dendy Marshall |first1=C.F. |last2=Kidner |first2=R.W. |title=History of the Southern Railway |edition=2nd |year=1963 |orig-year=1937 |publisher=Ian Allan |location=Shepperton |isbn=0-7110-0059-X }}
• {{cite book |last1=Haresnape |first1=B. |last2=Rowledge |first2=P. |name-list-style=amp |year=1982 |title=Drummond Locomotives: A Pictorial History |location=Hinckley |publisher=Ian Allan Publishing |isbn=0-7110-1206-7}}
• {{cite book |last=Longworth |first=Hugh |year=2005 |title=British Railway Steam Locomotives: 1948–1968 |publisher=Oxford Publishing Company |isbn=0-86093-593-0}}
• {{cite book |last=Swift |first=Peter |year=2006 |title=Maunsell 4-6-0 King Arthur Class |series=Locomotives in Detail, volume 4 |location=Hinckley |publisher=Ian Allan Publishing |isbn=0-7110-3086-3}}

{{refend}}

{{Commons category|LSWR L11 class}}

• [http://www.semgonline.com/steam/l11class_01.html SEMG gallery]

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{{DEFAULTSORT:Lswr L11 Class}}

L11

Category:4-4-0 locomotives

Category:2′B n2 locomotives

Category:Railway locomotives introduced in 1903

Category:Scrapped locomotives

Category:Standard-gauge steam locomotives of Great Britain