A 5 inch narrow gauge well tank, a model of the 18 inch gauge "Waril" class engine produced by Hunslet in the 1920s – the full-sized engine was a diminutive thing weighing in at a shade under six tons.
First modelled by Roger Marsh, having taken measurements from the preserved engine "Jack", it makes a big engine in 5 inch gauge – it comes out about the same size as a 3 inch scale 7 1/4 inch gauge Quarry Hunslet. This engine was scratch-built by an engineer inspired by Marsh's engine and ended up on a private railway in Surrey.
The engine has been well-used over the years and, in recent times, not stored in the best of conditions. Although the brightwork has survived well under a thick layer of grimy oil, the paintwork has seen its best days. Underneath the pretty crappy looking exterior is a well-made engine which still steams freely and runs well. It has been well-detailed with working sanders, dummy displacement lubricators, counter-balanced weighshaft, working oil-fired headlamp, opening glazed spectacles and a neatly made coal bunker in the cab.
Silver soldered copper boiler, 80 psi working pressure, feed by injector and axle pump with auxiliary hand pump beneath the footplate in the well tank. Cast iron cylinders with slide valves actuated by Walschaert's gear with pole reverser in cab. Mechanical lubricator with dummy displacement lubricators either side of the smokebox.
There is a clip of Sam steaming the engine outside the workshop here.
Hydraulic test @160psi for 80psi working pressure 29-3-2010
Steam test 29-3-2010