The London and South Western Railway L11 class
was a class of 4-4-0 steam locomotives
designed for mixed traffic
work. They were introduced in 1903
and were nicknamed
"Large Hoppers". As with most other Drummond productions, the locomotive had two inside cylinders and Stephenson link valve gear
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.
None has survived to be preserved.
Livery and numbering
LSWR and Southern
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... Read More