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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

Barry Railway J Class

The J Class. Another fairly early version of this sketch. Interesting to compare the J class 2-4-2T with the G Class 0-4-4T. They both use the standard Barry boiler and cylinders, but the J is a longer and heavier locomotive with considerably more coal and water capacity. Sadly I don't know enough about locomotive design to understand the pros and cons of the 0-4-4 and 2-4-2 wheel arrangements. I need to focus a bit more on the differences between the Sharp, Stewart and Hudswell Clarke versions

Barry Railway H Class

This is a early version sketch of a Barry H class. There are some puzzles. Photos appear to show a much narrower dome than the various weight diagrams, Barry and GW, which I've tried to reproduce. More problems come from the underframe being in shadows on most photographs. No brakes shoes on the leading driving wheel, and although I've drawn them the same, I have a suspicion the brake gear on the second pair of drivers was different to the other two. Finally the best profile shot of the L/H side

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
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