Push spring guide MALOSSI MHR Torsion Controller scooter engine Minarelli / Yamaha (booster rocket, bw's, nitro, aerox ...)

Spring support plate placed between the clutch and the clutch spring allowing a smoother rise, without vibration, a better sliding of the spring against the clutch therefore simpler settings, a better power curve all along the opening of the torque corrector.

TORSION CONTROLLER

Antifriction bearing for centering variator contrast spring

A secret of the Malossi competition sector

Lightweight, Perfect: in simplicity a concentrate of technology, the project and the formulation of the deposited materials.

Extract from the archives of the Malossi Engineering technical department

CVT transmission systems

Attention, do not pass on clutch evolution 2g POLINI and slightly hardens your push spring.

Chapter : contrast spring.
Goal
Reduce vibrations and stabilize the operation of the system at any speed and operating temperature.

Journey
Theoretically and practically all the existing systems of bearings on sale, ball, roller and radial sliding of the metallic type, all the proofs have given unsatisfactory results.
Prototypes were made with alternative, metallic systems, obtaining negative results. Only after grueling tests in the laboratory and on the track did we finalize the Torsion Control project.

Thesis
The component described above fixes the following problems.
During the amplitude of the change curve, the sleeve of the mobile pulley (torque corrector) slides axially in the driven pulley group, shaving the hub of the fixed pulley, which describes a small rotation by imparting a torsion to the contrast spring . Sometimes the spring loses its position by rubbing on the flange carrying metal masses on dry metal, and at other times it remains united by determining contrast forces, fortuitously different.

Second problem, the centrifugal forces developed at high rotational speeds influence the spring, which deforms and begins to swerve by creating strong vibrations, unpleasant for the pilot or dangerous for the engine, and which make the shift curve unstable.

Results
We approve the project after the tests in the test room and on the track on all the scooters examined, with full satisfaction.

Installs on MINARELLI / YAMAHA 50cc and 100cc following engines :

APRILIA SR 50 2T after 1994

APRILIA AMICO 50 2T

APRILIA AREA 51 50 2T LC

APRILIA GULLIVER 50 2T LC

APRILIA GULLIVER 50 2T

APRILIA RALLY 50 2T (MINARELLI engine)

APRILIA SR NETSCAPER 50 2T LC (MINARELLI engine)

APRILIA RALLY 50 2T LC (MINARELLI engine)

APRILIA SCARABEO 100 2T

APRILIA SCARABEO 50 2T (MINARELLI engine)

APRILIA SR RACING 50 2T LC (MINARELLI engine)

APRILIA SONIC 50 2T

APRILIA SONIC 50 2T LC

APRILIA SR 50 2T before 1993

APRILIA SR REPLICA 50 2T LC

APRILIA SR STEALTH 50 2T LC (MINARELLI engine)

APRILIA SR WWW 50 2T

ATALA CAROSELLO 50 2T

BENELLI 491 SPORT 50 2T LC (MINARELLI engine)

BETA ARK 50 2T

BETA ARK 50 2T LC

BETA CHRONO 50 2T

BETA EIKON 50 2T LC

BENELLI 491 GT 50 2T (MINARELLI engine)

BENELLI K2 100 2T

BENELLI K2 50 2T

BENELLI K2 50 2T LC

BENELLI NAKED 50 2T

BENELLI PEPE 50 2T

BETA QUADRA 50 2T

BETA TEMPO 50 2T

BSV AX 50

BSV GZ 50

DRR DRX 90 2T

FANTIC BIG WHEEL 50 2T

GARELLI GSP 50 2T LC euro 2 (1PE40MB)

GARELLI SR 50 2T

ITALJET DRAGSTER 50 2T LC

ITALJET MILLENNIUM 100 2T

ITALJET PISTA 2 50 2T

ITALJET SCOOP 50 2T

ITALJET YANKEE 50 2T

MALAGUTI F10 50 2T

MALAGUTI F12-PHANTOM 50 2T

MALAGUTI CENTRO 50 2T

MALAGUTI CIAK 50 2T

MALAGUTI F15 FIREFOX 50 2T LC

MALAGUTI F12 DIGIT KAT-PHANTOM 50 2T LC

MALAGUTI F12 DIGIT KAT-PHANTOM 50 2T LC euro 2

MALAGUTI F12-PHANTOM 50 2T LC

MALAGUTI F12 R LC 50 2T LC euro 2

MALAGUTI YESTERDAY 50 2T

MBK BOOSTER 100 2T

MBK BOOSTER 50 2T euro 0-1

MBK BOOSTER 50 2T euro 2 (A137E)

MBK BOOSTER SPIRIT 50 2T euro 0-1

MBK EVOLIS 50 2T

MBK FIZZ 50 2T

MBK FLIPPER 50 2T

MBK FORTE 50 2T

MBK HOT CHAMP 50 2T

MBK MACH G 50 2T

MBK MACH G 50 2T LC

MBK BOOSTER NAKED 50 2T euro 2 (A137E)

MBK NITRO 100 2T

MBK NITRO 50 2T LC

MBK BOOSTER NG 50 2T euro 0-1

MBK BOOSTER NG 50 2T euro 2 (A137E)

MBK OVETTO 100 2T

MBK OVETTO 50 2T

MBK BOOSTER ROCKET 50 2T euro 0-1

MBK BOOSTER ROCKET 50 2T euro 2 (A137E)

MBK SORRISO 50 2T after 1996

MBK STUNT 50 2T euro 0-1

MBK STUNT 50 2T euro 2

MBK TARGET 50 2T

MOTRON SYNCRO 50

MOTRON THUNDER'S 50

YAMAHA AEROX 100 2T

YAMAHA AEROX 50 2T LC euro 0-1

YAMAHA AEROX 50 2T LC euro 2

YAMAHA AXIS 50 2T

YAMAHA BREEZE 50 2T

YAMAHA BW'S 100 2T

YAMAHA BW'S 50 2T euro 0-1

YAMAHA BW'S 50 2T euro 2 (A137E)

YAMAHA BW'S Original / Naked 50 2T euro 2 2010 (A137E)

YAMAHA BW'S NG 50 2T euro 0-1

YAMAHA BW'S NG 50 2T euro 2 (A137E)

YAMAHA CRZ 50 2T

YAMAHA JOG ER 50 2T

YAMAHA JOG 50 2T

YAMAHA JOG R 50 2T

YAMAHA JOGRR 50 2T LC euro 2

YAMAHA JOG Z 50 2T

YAMAHA NEO'S 100 2T

YAMAHA NEO'S 50 2T

YAMAHA SLIDER 50 2T

YAMAHA SPY 50 2T

YAMAHA VINO 50 2T

YAMAHA WHY 50 2T

YAMAHA ZEST 50 2T

YAMAHA ZUMA 50 2T