Changes

|pressure = 225 lb/sq in}}'''6960 Raveningham Hall''', a GWR 6959 Class 'Modified Hall', was resident on the SVR between 1977 and 1996 and returned on hire between 2019 and 2021.  The SVR's [[GWR 4930 Hagley Hall | 4930 Hagley Hall]] is an example of the original Collett design of the successful 4900 Hall Class mixed traffic locomotive. In 1944 FThe Class was first built in the 1920s and the design remained largely unchanged until C.B.WCollett retired in 1941. Frederick Hawksworth, Collett's his successor as GWR Chief Mechanical EngineerCME, introduced a modified version produced the 6959 Modified Hall class of which 71 were built between 1944 and 1950. Although visually similar to the Hall with improved cylinder steam passagesearlier Halls, the modified version incorporated many changes. The re-design included plate frames incorporating a longer wheelbase with and extended main frames, . Cylinders incorporating improved steam passages were cast separately from the smokebox saddle and bolted to the frames on each side. Increased superheating and a re-designed bogiefeatured. Hawksworth also produced a re-designed tender with flat high sides, and a number of the 4900 and 6898 Class Halls were equipped with these. Seven Modified Halls were preserved, including 6960, although one (7927 Willington Hall) is being used as the donor for the 'Grange' and 'County' re-creation projects. Classmates include formerly [[Steam Locomotives hired by the SVR|hired]] locomotive [[6990 Witherslack Hall]] and [[Steam Locomotives visiting the SVR for galas| former gala visitors]] 6998 Burton Agnes Hall and 7903 Foremark Hall.