Vertical and lateral stiffness tests on Dunlop 'hour-glass' secondary suspension spring (IM-DOS-095)

Vertical and lateral quasi-static and dynamic stiffness tests were performed on a Dunlop Metalastik spring No 17-1561-00, known as an "hour-glass" unit. The results of the tests were compared with the production limits provided by the manufacturers. The spring which was tested proved to be slightly stiffer both vertically...