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STM EVOLUZIONE SBK SLIPPER DRY CLUTCH DUCATI HYPERMOTARD1100/S - FDU-S150
DIAPHRAGM SPRING 125mm
WITHOUT Basket and Plate Set
The "Evoluzione SBK" slipper clutch is the spearhead of the Ducati anti-skid systems used by pilots and racing teams competing in the world and national championships.
The performances are obtained by installing the STM Basket and Plate 48 teeth (ADU-0010), together with the STM disc pack with increased teeth, for minor wear on the bell itself.
ITHE HEART OF THE STM SLIPPER DRY CLUTCH
• pressure action on the DISC PACK through the pressure plate;
• function of coil springs.
• pressure action on the DRUM;
• serves to adjust the clutch opening during the anti-skid, then to adjust the engine brake.
HOW THE SPRINGS WORK
The primary and secondary springs are mounted in such a way as to guarantee a preload which generates an initial resilient spring force.
HOW THE PRIMARY SPRING WORKS
When the lever is actuated, the preloading position of the primary spring is varied and reduced. The spring returns an elastic force of contrast to the action of the lever.
HOW THE SECONDARY SPRING WORKS
The torque generated by the rear wheel tends to raise the drum. The secondary spring is compressed with respect to the initial resting position and generates an elastic contrast force.
WHY INSTALL A STM CLUTCH?