Jim Champ's "Introduction to Great Western Locomotive Development"

 

The Barry B Class with the standard 9 boiler. Unlike the B1s, GWR weight diagrams only show the B class with the same shortish front overhang as the original Barry weight diagram. Barry locomotives mostly kept the distinctive Barry style of cab opening, even after quite major reconstructions.

Edited March 31, 2022 by JimC

The colour does add further flavour. I wonder if the Tafsil layout of the Barry & Penarth MRC still exists. I've always admired the Barry engines on the layout's old website: http://s386633784.websitehome.co.uk/bpmrc/TafsilTanks.shtml

 

 

Edited March 8, 2021 by Mikkel

The front overhang, measured from the centre of the front driver to the buffer beam, varied with different batches. Starting at 6’1” subsequently extended to 6’4” and finally 6’9”.

 

These measurements refer to the B1s not the Bs

 

Brian

Edited March 9, 2021 by 88C

9 hours ago, 88C said:

The front overhang, measured from the centre of the front driver to the buffer beam, varied with different batches. Starting at 6’1” subsequently extended to 6’4” and finally 6’9”.

Could you clarify that a bit for me. Unfortunately I'm locked down away from my library. Here I have the Rutherford book and some photos of weight diagrams in Russell, but nothing else. RCTS is miles away!  The Barry weight diagram for the B class shows front overhang of 5'5 and for the B1 6'1. The drawings are undated, but must be after the original B1s were merged into the B class. The GWR weight diagrams for the B, both Barry and Std 9 boiler, show 5'5 front overhang, and the GWR weight diagrams for the B1, again for both boilers, show alternates of 6'1, 6'4 and 6'9.  So did any Bs have a longer front overhang, or was it just the B1s?
 

Sorry for causing confusion, my comments refer to the B1 class, clearly I did not read the title carefully. I have now edited my entry.

 

As you mention the Bs had a 5’5” overhang and I don’t think there was any difference, I certainly don’t claim to be an expert.

 

Brian