The model was purchased from Cheddar Models gathering dust in the showroom. Refurbished over a period of 4 years, the original P4 steam engine was replace with a powerful twin cylinder Cheddar "Proteus" slide valve fitted with Maudsley reverse gear. The large horizontal boiler is controlled by a electronic management system to regulate the gas supply to maintain pressure and the water level in the boiler (Motor: Steam Engine Cheddar " Proteus ") (5/10)