The original plans for this locomotive were from LBSC and were for a 4-4-0 schools class locomotive.
However following the completion of the tender, a problem was found with the locomotive valve gear which was unresolvable.
So a new locomotive was built to the "Project" design published by the G1MRA, to be mated with the completed tender.
This gauge 1 model was designed by LBSC. It was a scaled down version of a 3.5" gauge 4-4-0 locomotive called 'Roedean' also by LBSC. It was designed with 2 outside, double-acting cylinders; the valves being driven by inside eccentrics. Reversing was achieved with slip eccentrics to minimise valve gear and reduce the number of controls needed in the cab.
The boiler was spirit fired with water tubes and a blower valve.
The 6-wheeled tender was designed to hold a spirit tank with feed system, and a water tank with hand pump to fill the boiler under pressure.
Update 2019 - Unfortunately, having made the tender, there were clearance problems found with the valve gear on the locomotive. As a result the engine was changed to an 0-6-0 design as described in the Gauge 1 Model Engineering booklet called "The Project".
The replacement locomotive was made to plans published by the Gauge 1 model railway association and designed by Ron Poulter and Bob Hines.
The model (called "Project") was a single cylinder slide valve engine with high pressure boiler, simple valve gear and an 0-6-0 wheel configuration.
The idea was to put the completed tender with the project locomotive to get a working model.
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