Sonic Models S4102-02

LB&SCR K Class 2-6-0 LBSC Umber Brown No.342 Steam Locomotive

Manufacturer catalogue image - please note that pre-release images may be CAD renders or CGI images rather than photographs

Prototype Era
Era 3 (1923 to 1947) The Big Four (LNER, LMS, GWR and SR)

Manufacturer description

Available Exclusively from Rails of Sheffield

Please Note: LB&SCR K Class will now be Dark Umber Brown rather than the previously described Black, the cab roof is also now white

History

The LBSCR Engineer Lawson Billinton in 1912 designed a new powerful goods locomotive that coped with heavy loads at speed. No 337 appeared the following year (1913) and by 1921 a total of 17 had been constructed at Brighton works. They proved to be very successful providing invaluable support during WW1 when very large freight movements were required.

The locomotives also coped well with passenger services providing a good all-round service to the railway. Billinton was not afraid to improve the steaming characteristics to help reduce coal running costs and the design innovations included an additional dome and top feed. This feature was improved and the last seven locomotives left Brighton works including this feature which lasted through to the end of the 1920’s before all were modified back to one dome.

More would have been built but for the fact that the LBSCR was merged into the larger SR in 1923 and the new company appointed a new Engineer Richard. E. L. Maunsell. He favoured his own N and U class designs so no more K Class locomotives were built.

In the 1930’s Maunsell improved the cab design and lowered the height as well as the dome and chimney to operate to the composite loading gauge.

Under BR ownership only minor changes were made. Removal of the LHS Weir Water Heaters in the early 1950’s and later modifications to the tender to include water treatment. Interestingly at the end of all their working lives the N and U designs cost far more to maintain with serious design faults in the frames and cylinders.

The K Class design proved reliable right to the end. One locomotive No 32353 was offered to the Bluebell Railway for preservation but unfortunately the society was struggling in 1962/3 to raise money to buy the track and infrastructure and could not afford the extra expense. (It is surprising the locomotive was not offered to the National Collection)

Specification


Catalogue listing

Brand
Sonic Models
Product Code
S4102-02
RRP
£189.95
Release date
Q1 / Q2 2026
Limited edition model for
Rails of Sheffield

Model details

DCC status
DCC 21

Prototype information

Locomotive class*
Models

* Class names often change over the lifespan of a locomotive, so this is not necessarily the class name used by the operator in the period modelled.

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Related products

The Sonic Models LB&SCR K Class 2-6-0 locomotive in Umber Brown livery, number 342, is now available exclusively from Rails of Sheffield.

This model is a limited edition representation of the K Class, a powerful goods locomotive designed by LB&SCR Engineer Robert Billinton in 1912. The class was successful in providing support during World War One, and also performed well on passenger services. The locomotives featured an additional dome and top feed, a design innovation that improved steaming characteristics and reduced coal running costs.

The K Class locomotives were primarily built at Brighton works, with a total of 17 constructed by 1921. However, the class was not continued after the LB&SCR was merged into the Southern Railway in 1923, as the new Engineer, Richard E. L. Maunsell, preferred his own N and U class designs.

The K Class design was later modified by Maunsell in the 1930s, with changes including a lower cab height and dome, and a composite loading gauge. Under British Railways ownership, only minor changes were made, including the removal of the LHS Weir Water Heaters and modifications to the tender.

The model features a range of details, including chimneys, domes, cabs, and Westinghouse pump, as well as AWS equipment and lamp/disc detail bracket variations. The model is powered by a smooth 12V motor, with a flywheel to aid traction, and features a factory-fitted DCC sound sugar cube speaker. The model's electrical pick-up is via all six driving and tender wheels, and the locomotive and tender linkage is fully adjustable to suit users' track radii.

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