Trackside Classics: British Railways DMU Diesel Train Instructional Videos – Know Your DMU

I’m poaching on Contributor “Big Paws” territory here so I hope he doesn’t mind – but I found this series of very entertaining and informative videos from British Railways circa mid-1950’s on Youtube the other night.  The videos address operation and trouble-shooting for the DMU series of trains introduced in 1956.  Nicely filmed, straightforward, very detailed, and with a trace of understated British humor…they highlight how “old school” training was done.  There are four parts – I found Parts 2 and 3 the most interesting…

DMU stands for Diesel Multiple Units – and were British Rail’s first attempt in the middle 1950’s to modernize some of its smaller regional and secondary lines, replacing the then common steam power.  Big Paws has an excellent summary of the DMU series trains here.

While there were several versions made by different manufacturers, the ones in the video look like Class 101 trains made by Metro-Cammel.  Most used a British United Traction (a collaboration between AEC and Leyland) 11.3 litre horizontal six cylinder engine with 150 hp.  The mechanical transmission with pneumatic shifting is quite interesting.

I’m hoping these DMU’s didn’t break down as much as this video seems to suggest.  In any event, an Operator smaller in stature certainly looks to be at an advantage…

The 101/2 series trains proved both successful and popular, with the last one leaving service in 2003.