Quasi-static stiffness testing of the BT7 primary suspension (TM-DOS-42)

These tests were carried out on the vehicle used for resonance testing the BT7 bogie; this work is reported in TM DOS 43. The primary suspension consists of two Clouth rubber units per axle box, each unit to Clouth drawing CF731-1A. The bogie chosen for testing was at No.1 end.