Vertical ride testing of 3 car APT-POP train December 1977 March 1978 (IM-DOS-049)

This memorandum describes various tests having the objects: (1) to show whether those airspring configurations which gave best results in laboratory testing (see Reference 1) were feasible under running conditions; (2) comparison with the vertical ride of a service Mk. 3 carriage, following some doubt as to the...