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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.







Entries in this blog

Dean's Larger Tank Engines

This is something of a followup from discussion in another Blog entry,  https://www.rmweb.co.uk/community/index.php?/blogs/entry/24891-gwr-no-34-1890/ and is also relevant to this one. https://www.rmweb.co.uk/community/index.php?/blogs/entry/24922-gwr-3521-0-4-2t-and-0-4-4t/. As I said, I'm beginning to further appreciate what a weird and largely unsuccessful bunch Dean's larger tank engines were, and what a contrast in style they were from the smaller 6 wheeled engines, conventional, successful

Barry Railway F Class

The F class was very similar to the A class except for the saddle tank. The F class is one of the trickier ones to sketch out, because there were several different batches from builders, and variations between the batches, front overhang for example, definitely existed. There are two styles of foot plate valance too.  The first five at least had a straight valance, the remainder curved as drawn.        This second sketch shows a lightly swindonised version of the F clas

GWR 3521 0-4-2T and 0-4-4T

No, sorry, I haven't made a drawing of these. I'm thinking I should, but there's not a lot of material about. There are some drawings at the NRM, but the catalogue descriptions don't give me immense confidence I want to go ordering half a dozen up at getting on 30 quid a time. Soon adds up! The GWS doesn't seem to have anything useful. Does anyone know of any other sources?

Port Talbot Hudswell Clarke 0-6-0ST - GWR 808 Class

These Hudswell-Clarke built locomotives were delivered to the Port Talbot in 1900/01. They weren't given any major rebuilds under the GWR but were lightly westernised and withdrawn, with some sold into industry, in the late 1920s/early 1930s. One has survived and is a popular and successful locomotive in preservation. In spite of being basically an industrial shunter type she works heritage line trains very capably.

GWR No 34 (1890)

One of a pair of small 0-4-4T constructed under Dean, its believed for branch lines with heavy curvature. They were superficially similar in concept to the ill-starred 3521 class, but considerably smaller, and like the 3521s went through a good number of changes in their early years. They started life in 1890 as 0-4-2 saddle tanks, with the same layout of much shorter spacing between the driving wheels than between the trailing drivers and the trailing wheels. In 1895 they were altered to the fo

GWR No 92

No 92 is one of five small 0-4-0STs, superficially rather similar in appearance, but which were not treated as a class.  With one exception they were late 19thC Wolverhampton reconstructions of older locomotives, and probably retained few original parts.  The first of the group was no 45, built in 1880, which was a new engine, albeit given the number of a Sharp Stewart built locomotive withdrawn a very few years earlier. It had the odd feature of a cab that was only accessible from the righ

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

Barry Railway F Class

Making a start on the Barry Railway F class. Like a number of absorbed 0-6-0T the F Class was a bigger and heavier locomotive than GWR classes such as the 2721 and later 5700s. The boiler in particular was larger. The F was very much a saddle tank version of the earlier A class and the most numerous Barry class after the B1s. They were built by several builders between 1892 and 1905, and but I haven't yet pinned all the variations existed between them, but I understand there were enough to be wo

GWR 1813 Class

The 1813 Class is intriguing. They started off as side tanks, and ended up as pannier tanks with saddle tanks fitted in between. The side tanks didn't last very long, and this was a period where there were any number of experiments with boilers. Consequently there is extraordinary variety, and it seems as if not only were there no two the same, but none of them stayed the same for very long either. These sketches are the fruits of a small joint research exercise with @Mikkel. Beware of thinkin


JimC in New GWR Sketches

GWR No 15.

Bar framed 0-4-0 by Bury. Note the domed firebox which it retained for its whole life in spite of other changes. Built in 1847 for the Shrewsbury and Chester Railway, it was withdrawn in 1903.


JimC in New GWR Sketches

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