HSFV1 yaw suspension investigations (IM-DA-328)

Gross malfunction of HSFVI's yaw suspension during 1979 provided the impetus for an investigation of yaw suspension behaviour. Cross-plots of longitudinal displacements across the yaw suspension at either side of a wheelset, and cross-plots of yaw torque against yaw displacement, proved very useful techniques for assessing mechanical play and hysteresis...