Centenary 4-6-4T L&Y/LMS

'Centenary' is a 3 1/2" gauge model designed by Martin Evans of the Lancashire and Yorkshire Railway Hughes designed 4-6-4 'Baltic' tank locomotives. The prototype was the largest and most powerful tank locomotive to enter UK service having four cylinders with outside Walshaerts valve-gear driving the valves to the outside cylinders and rocking levers driving the inside cylinders' valves.  Martin Evans designed the model to mark the centenary of Model Engineer magazine's publication in 1998, hence the name of the model.

The model has four slide-valve cylinders and a Belpaire-firebox boiler.

A construction series for 'Centenary' including a full set of drawings was published in Model Engineer magazine commencing in volume 180, issue 4058, 1st January 1998 and ending in Volume 181, issue 4077, 25th September 1998.

No castings particular to this locomotive are available. Castings for other locomotives can be adapted and fabrication adopted for certain fittings. The driving and coupled wheels are 4 5/8" over the treads with 19 spokes and a throw of 13/16". The bogie wheels are 2 3/8" over the treads with 10 spokes. Adoption of existing castings meant that Martin Evans' own model had eighteen spoke driving and coupled wheels and ten spoke bogie wheels.  Outside cylinders can be adapted from 'Jubilee' castings while inside cylinders will need cutting from a solid block of material unless the constructor makes their own patterns for casting.