O&K Mallett 0-4-4-0
PAKIS BARU No.5 was built by Orenstein & Koppel of Berlin in 1905 for use at a sugar mill in Indonesia. It arrived at the private Statfold Barn Railway (SBR) in September 2004. Restoration at the on-ste workshops began in 2006 and was completed in 2007.
The Mallett design has a rigid main frame that supports the rear end of the boiler. At the front of the main frames are the high-pressure cylinders. A sub-frame, carrying a second set of driving wheels powered by low-pressure cylinders, is positioned ahead of and pivoted to the main frames. Exhaust steam from the high-pressure cylinders is carried to the low-pressure cylinders through flexible steam pipes, as is the exhaust steam from the low-pressure cylinders to the blast pipe in the smoke box. The overall result is therefore a compact but powerful locomotive able to negotiate relatively tight curves.
The image was taken at an SBR open day in September 2012. The SBR is located near Tamworth, Staffordshire, England.
Picture added on 30 July 2013 at 18:38