By Alan Regan
My Merlin W&LLR #14 (SLR #85) appeared as Model of the Month in September 2009. I put the loco on the Heritage stand at the National Garden Railway Show in Peterborough 2014, along with a description of what I planned next. The changes described below were completed later that year, but it has taken me until now to document and photograph them. I hope this update is of interest to those who own one of these locos, because for me it has remedied the remaining issue with the design, namely control!
As delivered, the loco had a disc regulator. It was never satisfactory – fine control of speed was impossible and frequent changes in speed were the norm. My experience with the needle valve regulator on the Roundhouse Lady Anne encouraged me to see whether the shortened version of the regulator could be fitted to the loco. The judgement was that it could, but that a Roundhouse displacement lubricator would also be needed. After discussion with the ever helpful Harri at Roundhouse, the necessary parts were identified and I picked these up at Peterborough. I selected a lubricator which drained through the footplate as this provided the neatest and cleanest solution.