vadimivanovich wrote:You might be right; my test-case was with a full T1 Sachs clutch set. One of the issues was the springs in the friction disc were too soft.
The function of the springs in the center of the friction disc is to balance out differences in rotating speed between the fly wheel and the gearbox input shaft. To remove vibrations and ease clutch engagement. They act towards a smaller friction disc inside the center of the clutch friction disc.1)
The spring force of the pressure plate determines the force wich is applied on the sintered pads towards the flywheel. Or actually between the fly wheel, sintered pads and the surface of the pressure plate.2)
The design and surface area of the sintered pads on the friction disc affects the amount of friction that is achieved too.
To me, these two parameters determines the over all grip force of the clutch.
Correct me if I'm wrong, but I don't think the stiffness of the springs in the center of the friction disc can cause clutch slipping. At all.