Vespa PX PE T5 Super Sprint DRT Reinforced Primary Cush Drive Repair Kit Primary 65/68 Teeth Clutch Bearings It also converts AC current

It also converts AC current to DC to charge the battery / run the pilot/horn/brake light system

Produced my Mazzucchelli

Vespa - Windscreen - Large - 56cm Above Headlamp - PX

The high torque of motors requiring such a long reduction is transmitted directly to the gearbox via straight teeth without exerting lateral forces on the auxiliary shaft bearing

8mm according with manufacturer

Vespa PX PE T5 Super Sprint DRT Reinforced Primary Cush Drive Repair Kit Primary 65/68 Teeth Clutch Bearings It also converts AC currentContained within the primary drive of the input shaft assembly of your VESPA motor are six pairs of springs. These spring units are arranged so that the smaller springs operate inside the larger springs for a stronger resistance to the forces created within the drive train. If these springs are worn or even broken, acceleration will be interrupted and effected with a jerky action similar to clutch failure. The only remedy is rapid replacement.