Instrumentation for P.O.P train suspension tests at Old Dalby 30.1.73 (IM-IS-128)

The tests were carried out between MP 115 and MP 114 at 60 MPH. After the first run the EI/1 primary dampers were removed so that a comparison of vertical ride of the bogie and PC3 body could be made for rail condition. The signals were displayed on a U.V.