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About this blog

I'm mulling over a supplement to my GWR locomotive development book.
New sketches I prepare will appear here (in small size).  Comments and corrections on the original (be nice!) and suggestions for content in the supplement welcome.
 

If you are planning a model of any of the locomotives featured in this blog you are very welcome to contact me and I'll see if there's anything I can do to assist you in researching for your model. 

 

https://www.pen-and-sword.co.uk/An-Introduction-to-Great-Western-Locomotive-Development-Hardback/p/14507

 

 

 

Entries in this blog

Rhymney Railway L Class

These were saddle tanks with double frames. Five were built in 1891 by the Vulcan Foundry. They had started life with a polished brass safety valve cover as well as the dome, not to mention elaborate lining out. As shown here the lining is omitted completely and its intended to be a post WW1 configuration.   The frames are rather different to the general run of 19thC RR saddle tanks.  By GWR days three had been converted to L1 Class 0-6-2ST, one of which had already been withdrawn.  

Rhymney Railway L1 Class

The L1 class were built as L class 2-4-2 saddle tanks with double frames. By GWR days two of them had been converted to 0-6-2T, given new design boilers based on those of the K class, and called class L1. A third conversion had been scrapped in 1921. The rebuilds presented an odd appearance, since the 2-4-2s had a small rise in the footplate over each crank on the drivers, but this was not repeated over the new leading driving wheel. The 0-6-2s, allocated diagram J, were scrapped in 1922 and 192

Rhymney Railway R Class (AR)

The last new locomotives for the Rhymney were ordered in February 1920, about the time when serious planning for the grouping started in the Cabinet (https://discovery.nationalarchives.gov.uk/details/r/D7735748). Four were delivered by Hudswell Clarke in July and September 1921, and six from Beyer Peacock in December. They were slightly different in detail from the pre war R class. The classification AR doesn't seem to have ever been used in practice or officially but was certainly present on a

Rhymney Railway R Class

Stephenson’s built the first three locomotives of the R class in 1907. Although based on the design of the Ms, they had quite different boilers with a slightly larger barrel and a Belpaire firebox, and cylinders with the valves between the cylinders rather than above as in the Ms. Two more Rs followed in 1909. The last batch of Rs, known semi officially as the AR class, were delivered in 1921 and will follow in another entry. The Rs are commonly held to be the major influence on the GWR 56x

Rhymney Railway S Class

The S class were four powerful and heavy shunting engines, delivered by Hudswell Clarke in 1908. They bore a definite family resemblance to the R class 0-6-2T, with the same coupled wheelbase but a shorter boiler, a round topped firebox and smaller driving wheels. Their original boilers were replaced with A class boilers by the grouping. They joined the GWR as 608-611. In 1930, all were rebuilt with superheated Standard 10 tapered boilers and new GWR style larger bunkers. They were renumber

Rhymney Railway S1 Class

These were essentially updates of the S class (qv), slightly longer and with larger bunkers, and based on A1 class 0-6-2T design features. They also had a slightly larger boiler with a Belpaire firebox. They were delivered in 1920 by Hudswell Clarke. They were numbered 604-606. Plans to reboiler them with Standard 10 boilers were never acted on, although one did receive an enlarged GWR style bunker. They did acquire GWR safety valves and covers and some additional tank fittings. They were renumb

Rhymney Railway M Class

The last of the outside framed classes had been delivered to the Rhymney in 1900, and from then on the locomotives took on a much more modern appearance. The first were what was later to be called the M class, and the  detailed design is usually credited to Robert Stephenson & Co. All subsequent locomotives for the Rhymney, other than a pair of locomotives which started life as railmotor units, bore a distinct family resemblance. These locomotives form a complicated and rather incestuous gro

Rhymney Railway K Class 0-6-2ST/0-6-2PT

These were a version of the J class with a larger bunker, but I found more subtle differences than I expected. Again its very heavily indebted to the excellent WRRC volume on the Rhymney. This sketch represents a locomotive rather earlier in its career than the J class sketch, with the rather unusual long brass number plate.   Note that this one has Ramsbottom safety valves rather than the pop valves on the J. There was a horrific accident with one of these locomotives where a fit

Rhymney Railway J Class

This one might be the last for a while, because I get a little weary of doing too many of these sketches at a time.  This one owes a huge debt to the Welsh Railway Research Circle's excellent publication on the Rhymney,  Welsh Railway Records Volume 1, which was the source not only for the drawing I used as a foundation, but also provided some excellent photos. The sharp eyed who have the book might be able to see a number of (minor) areas where my interpretation of the photographs differed from

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