Jonny251990 Posted February 16, 2017 Share Posted February 16, 2017 I'm am modify a number of my wagons [LMS, GWR and LNER mostly with some PO (RCH and Gloucester type) mineral trucks] and am looking for suitable sprung buffers with the correct head diameters. MJT seem to do a good range, and from trawling the web I seem to get the impression that most wagons pre-BR had 13" buffer heads. Would this be correct? Many thanks, John Link to post Share on other sites More sharing options...
Miss Prism Posted February 16, 2017 Share Posted February 16, 2017 GWR wagons were fitted with 12" (early wagons), 13" (later standard, but I'm not sure when the changeover happened), but some wagons (e.g. later shunters trucks) were fitted with larger 15" or 16" heads. Longer-wheelbase wagons were usually fitted with the larger heads, either round or elliptical. I think most early PO wagons were fitted with 12", but there was probably an RCH change to 13" at some stage. Link to post Share on other sites More sharing options...
Spitfire2865 Posted February 16, 2017 Share Posted February 16, 2017 Almost all short wheelbase wagons would be fitted with 12" heads, but best to check wagon drawings of specific diagrams to be sure. Link to post Share on other sites More sharing options...
Guy Rixon Posted February 16, 2017 Share Posted February 16, 2017 The Ince Wagon Works book has a facsimile of the RCH 1923 spec-drawing for a 12-ton wagon. It has 13" buffers. So does the RCH 1903 drawing, reproduced in the same book, for a 15-ton wagon. The drawing for 8, 10 and 12 ton wagons issued in 1906 shows 12" heads. Also in that book are reproductions of many RCH drawings for "approved" versions of self-contained buffers, which would typically be used when rebuilding a dumb-buffered mineral wagon to an RCH-acceptable standard. All the approved designs from the trade have 12" heads, as do the three variants of RCH design specified in 1906. In the 1912 design for standard, self-contained buffers (which are completely different to the 1903 design) the drawing carries a note: 12" dia for wagons under 18'0" over headstocks. 13" dia for wagon 18'0" or more over headstocks except 30 Ton wagons. 17"x12" Oval with square spindle for 30 Ton wagons. From that, I'd guess 12" heads for normal-size (15' up to 17'6" long) mineral and goods wagons built pre-1923 and 13" heads afterwards. And I can't see that the RCH would have forced wagon owners to upgrade the 12" heads to 13" on wagons already in service. Link to post Share on other sites More sharing options...
jim.snowdon Posted February 16, 2017 Share Posted February 16, 2017 The RCH 1907 series drawings show buffer head diameters of 12" and 13" for four-wheeled wagons. Jim Link to post Share on other sites More sharing options...
Jonny251990 Posted February 16, 2017 Author Share Posted February 16, 2017 That's great. Thanks for all the information, I think I'd still be searching the web otherwise! Better order 12" and 13" buffers then... Link to post Share on other sites More sharing options...
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