Torsion Controller MALOSSI Maxi Torsion Controller Kymco 250-300i H2O 4T E2
Article information
TORSIONSREGLER
Antifriction fifth wheel for variator contrast spring
A secret from Malossi racing department
Light, perfect: a technology extract in its simplicity.
Design and formula of the materials are registered.
Abstract from of Malossi Engineering R&D department archives
CVT Transmission systems
Chapter : contrast spring.
Goal:
Pull down vibrations and to make the system operation stable at any rpm and temperature.
Design path:
We have considered both on theoretical and practical basis all the existing fifth wheel systems: balls, rollers and radial sliding fifth wheels of metal type. All the tests gave unsatisfactory results. We have made prototypes with alternative systems, metallic type, without any positive results. Only after exhausting laboratory and racetrack tests we have eventually come to Torsion Controller design.
Thesis:
The above-mentioned component solves the following problems.
During gear curve range the bushing of the movable pulley (torque drive) slides into the driven pulley in axial way along fixed pulley hub, making a small rotation which gives a torsion to the contrast spring. Sometimes the spring loses its position while frictioning on the shoe-holder plate, metal against
metal; some others, the spring remains stuck in its position causing some accidentally different contrast forces.
Second problem : centrifugal forces caused at high rpm affect the spring which consequently buckled and starts to veer as to create big vibrations, very annoying for the driver as well as dangerous for the engine and, above all, making unsteady the gear curve.
Result:
We approved the project with great success after strict tests at R&D department and on racetrack on all examined scooter models.
Specifications
Part number Malossi | : | 2517018B |
Type | : | Race |
Class | : | Torsion Controller |
Fits
Torsion Controller MALOSSI Maxi Torsion Controller Kymco 250-300i H2O 4T E2 fits the following vehicles:- Kawasaki J 300i H2O 4T E3 2014-2017
- Kawasaki J 300i H2O 4T E4 2018-2020
- Kymco Bet & Win 250 H2O 4T E1-E2 2000-2006
- Kymco Dink Street 300i H2O 4T E3 2009-2014
- Kymco Dink Street ABS 300i H2O 4T E3 2010-2014
- Kymco Dink Street ABS 350i H2O 4T E3 2015-2016
- Kymco Dink Street ABS 350i H2O 4T E4 2017-2020
- Kymco Downtown 300i H2O 4T E3 2009-2014
- Kymco Downtown ABS 300i H2O 4T E3 2010-2014
- Kymco Downtown ABS 350i H2O 4T E3 2015-2016
- Kymco Downtown ABS 350i H2O 4T E4 2017-2020
- Kymco Downtown ABS 350i H2O 4T E5 2021->
- Kymco DTX 360i H2O 4T E5 2021->
- Kymco G-Dink 300i H2O 4T E2 2012-2017
- Kymco G-Dink 300i H2O 4T E4 2018-2020
- Kymco Grand Dink 250 H2O 4T E1-E2 2001-2006
- Kymco Grand Dink MMC 250 H2O 4T E2 2006-2011
- Kymco K-XCT 300i H2O 4T E2 2013-2016
- Kymco People GT 300i H2O 4T E3 2011-2018
- Kymco People GT 300i H2O 4T E4 2019-2020
- Kymco People S 250 H2O 4T E2 2006
- Kymco People S DD 250i H2O 4T E2 2007-2008
- Kymco Super Dink 300i H2O 4T E3 2009-2014
- Kymco Super Dink ABS 300i H2O 4T E3 2010-2014
- Kymco Super Dink ABS 300i H2O 4T E3 2015-2016
- Kymco Super Dink ABS 350i H2O 4T E4 2017-2020
- Kymco Super Dink ABS 350i H2O 4T E5 2021->
- Kymco X-Citing 250i H2O 4T E2 2005-2008
- Kymco X-Citing EVO-R ABS 300i H2O 4T E2 2009-2014
- Kymco X-Citing R 300i H2O 4T E2 2007-2008
- Kymco Yager GT 300i H2O 4T E2 2013-2017
- Kymco Yup 250 H2O 4T E2 2003-2006
- Quadro Quadro3 350i H2O 4T E3 2016 ((T69N))
Documentation
7312827.pdf