MALOSSI Spring guide for variator CONTROLLER 1157008

Spring tension adjuster TORSION CONTROLLER for Piaggio engines from 125 to 300 cc

DESCRIPTION

TORSION CONTROLLER

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Anti-friction ring for variator spring centering

A secret from the Malossi competition department

Lightweight, perfect: simplicity with a concentration of high technology.

The design and material composition are the result of a Malossi patent.



Extracted from Malossi Engineering Technical Office files

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CVT Transmission System

Chapter: contrast spring.

Objective

Eliminate vibrations and stabilize operation at any rotational speed and at any operating temperature.

Workshop investigation

We have studied all existing circular anti-friction fabrics, for rollers and radial sliding of the mechanical type in the market and have conducted practical and simulation tests but with negative results. Prototypes have been made with alternative systems but without results. Only after rigorous tests and laboratory and track research, have we achieved the Torsion Controller.

Tesi

The Torsion Controller solves the following issues.

During the curve change transition, the driven pulley assembly slides axially along the fixed pulley hub, the moving pulley bushing (torque driver, torque corrector), which describes a small curve imparting a torsion to the reaction spring. In some cases, the spring loses its position by friction against the metal-to-metal flywheel, while in other cases it remains in place, thus determining different reaction forces.

Second problem: the centrifugal forces developed at high rotational speeds act on the spring, causing it to deform and produce vibrations that disturb the rider and may cause problems to the engine and produce irregularities in the power curve.

Result

The project is approved only after testing in the testing department and on the track on all scooter models used, with full satisfaction.