The above map shows the rail line between Tanjung Aru and Papar .... the North Borneo Railways run a steam train between these two stations. The distance being 38.5 klms.
Previous blog posts will have further information on the train and the journey itself. This blog post is to show you the railway turntable at Papar and what it does. Not many people have actually seen one in operation.
A turntable is a large circular platform which is used to turn locomotives and other rolling stock for railways. A well-engineered turntable is designed in such a way that the efforts of only two or three people are needed to operate the turntable, even when dealing with very large and heavy locomotives. A related railroad term is “wye,” a term used to describe a special configuration of track which essentially allows trains to make really big three point turns so that they can turn to face the direction they came from.
The North Borneo Steam Train travels the 38.5 klms from Tanjung Aru all the way to Papar, but once there it needs to 'turn around' to do the return journey.
The reason the turntable was developed was because early steam locomotives were somewhat difficult to run in reverse. In some cases, locomotives lacked a reverse gear altogether, and in other instances, the reverse speed was very slow and clumsy, which could be a liability at a busy switching station or hub. As a result, train companies started building turntables so that they could quickly turn their locomotives around.
The following images will guide you as to how it works:
First though, the train pulls into the station and unhitches the carriages. The carriages remain at the station as the locomotive moves off to start its turn around. Here you can see the locomotive reversing towards the turntable .....
In the next set of images, the locomotive slowly moves towards the turntable. To use a turntable, a locomotive or railway car is driven or pushed onto the platform and locked in place before the platform is spun to face in a new direction.
In addition to being used to turn rolling stock 180 degrees, turntables can also be used to shunt locomotives off onto sections of track positioned at a variety of angles relative to the turntable. Once the platform has been turned and locked in place, the locomotive can be unlocked and moved.
The engine is now on the turntable and the controller - sitting in the small control box - operates the turntable anti clockwise with the locomotive on.
The locomotive has now done a 180 degree turn. It will now reverse back up the line until it reaches the rail line it can travel on to re attach itself to the carriages.
In the next set of images you will see the 'back' of the locomotive. This is called the TENDER. It is a container holding both water for the boiler and combustible fuel such as wood, coal or oil for the fire box.
The 90 ton locomotive is also seen reversing back into the platform area at Papar ready to re attach itself to the carriages, as seen in the images below....
The North Borneo Railway features a British 'Vulcan' steam locomotive, built and designed by the Vulcan Foundry in England in 1954. The Vulcan is the last of a fleet of steam engines that have plied the tracks through Borneo since the late 1800's.
The engine weighs 90 tons and is finished in traditional dark green and black, with a red stripe to highlight the brass detailing. The wheels are fabricated of iron, with a molded NBR acronym, standing for the North Borneo Railway.
The engine is designed for wood burning, a costly yet a viable form of generating steam. Stepping into the engine is an opportunity to jump back into the shoes of a child, bringing back childhood dreams of pulling on the whistle as the massive train rolls through the countryside.