The Tatuus torsion rig facility works applying a pure torsion without any constrained displacement, the torsion can be applied to the isolated chassis or to the chassis through the front wheel uprights.
The torsion rig is regularly verified for force and hysteresys calibration. The data logger register forces and up to 8 displacements allowing the stiffnes measurement along the car center line.
For each section an analysis graph is made to check the stiffness linearity, the hysteresis level and the results consistency
A full test report including graphs, tables and a comparison to the previous test on the chassis is deliver after the session.