Malossi Variator Spring Guide TORSION CONTROLLER

The Malossi TORSION CONTROLLER variator spring guide is a high-quality product, specifically designed for Piaggio engines from 125 to 300cc. This component, developed in Malossi's racing department, represents a concentration of technology, lightweight and perfect in its simplicity.

The design and formulation of the materials have been patented, with the aim of reducing vibrations and ensuring stable operation of the system at any rotational speed and operating temperature.

During the development of the Torsion Controller, all existing roller systems on the market were taken into consideration, but none of them yielded satisfactory results. Prototypes with alternative metallic systems were created, but without achieving positive results. Only after exhaustive laboratory and track tests, was it possible to fine-tune the Torsion Controller project.

This component solves two main problems. The first problem concerns the excursion of the shift curve, where the bushing of the movable pulley slides along the hub of the fixed pulley and twists the counter spring. In some cases, the spring loses its position and rubs against the mass carrier plate, while in other cases it remains integral with it, resulting in randomly different opposing forces. The second problem concerns the centrifugal forces that develop at high rotational speeds, influencing the spring and causing annoying vibrations for the rider or damaging the engine, making the shift curve inconsistent.

After tests in the test room and on the track, the Torsion Controller project was approved for all types of scooters examined, achieving a high level of satisfaction.