Hello, I'm currently working on developing a fictional alternate universe history for one of Robinson's unbuilt locomotive designs, specifically the 1911 Manchester-Sheffield route Pacific 4-6-2 as a Smith three cylinder compound with .G.C.R. Class 8J style Walschaerts valve gear. However I'm stuck as to which barrel length would be more appropriate for such a locomotive and why: the original 15' or the later more common 19'/20' (.L.N.E.R./L.M.S.). Any help would be greatfully recievced and will be fully credited.
1911 .G.C.R. Pacific line diagram, (used with Peter Townsend's written permission).
Fictionaly developed .G.C.R. Pacific, (15' barrel length).
.G.C.R. barrel length?
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