The W.O. Rooper lighting plant from Firle Place
Built in 1923, this set uses a single-cylinder four-stroke engine driving a DC generator to charge a lead-acid battery. The Crossley O117 horizontal heavy-oil engine delivers 36 brake horsepower at 290 revolutions per minute, at which speed the GEC dynamo generates 17 kilowatts at 250-300 volts DC.
The Engine