YWA 'Salmon' 50 ton bogie sleeper carrier wagon No.DB996464, Lot 2926, built as a Diagram 1/646 bogie rail wagon in 1956 by G R Turner (Langley Mill). At Leamington Spa, 27 September 2014. 894 unfitted or piped 'Salmons' (some were later fitted with vacuum brakes) were built in 1949-62, based on a LMS design (with 5 bolsters), in several varieties: 54 unfitted Diag.1/640 with planked flat floor (no bolsters) built by BR (Derby) and Teeside B&amp;E in1949-52; 147 unfitted Diag.1/642 (first lot with bolsters but second without) built by Head-Wrightson in 1951-53; 54 unfitted Diag.1/644, steel floor, non-bolstered, built by Turner in 1954; 315 unfitted Diag.1/646 with steel floor (as Diag.1/644) built by Turner and Teeside B&amp;E in 1955-57; 191 Diag.1/637 (piped version of Diag.1/646) built by BR (Wolverton) and Head-Wrightson in 1959-61; 25 piped Diag.1/628 (as Diag.1/637 but with side guide rails) built by Powell Duffryn in 1961-62. Many post-1952 wagons were fitted with air brakes in the 1980's and then rebogied in 1999-2008 for higher speeds, being coded YWA under TOPS for use as sleeper carriers.
hugh llewelyn
CC BY-SA 2.0
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