Torque Spring Malossi Minarelli / Morini
Description
Malossi contra springs
Contra springs, or torque springs, from Malossi in 3 different strengths. Suitable for Malossi Multivar and original CVT.
Malossi torque springs for horizontal Minarelli and Morini engines. These springs are a decisive factor in the transmission of power from the engine to the rear wheel, as they control the function of the variator and prevent the belt from slipping.
The Malossi springs are made of heat-resistant special steel, which guarantees a long service life even under heavy use.
Note: Suitable for Derbi Start / 3 / 5 models when fitted with Minarelli horizontal pulleys.
Specifications Malossi contra springs Minarelli:
Torque Spring reinforced white
- Hardness: 30% harder than the original
- Spring resistance: 3.5k
- Dimensions (outer diameter x length): 53.1x110mm
- Thickness: 3,6mm
Torque Spring super reinforced yellow
- Hardness: 35% harder than the original
- Spring stiffness: 3.8k
- Dimensions (outer diameter x length) 53.5x115mm
- Thickness: 3,7mm
Torque Spring Racing red
- Hardness: 40% harder than the original
- Spring stiffness: 4.7k
- Dimensions (outer diameter x length) 53.7x110mm
- Thickness: 3.9mm
Contra spring
The contra spring, or torque spring is part of all scooters and mopeds with CVT transmissions.
function of torque spring
The contra spring is located between the rear pulley and the clutch. As soon as you accelerate and the engine revs up, the spring is released by centrifugal force. This causes the front pulley to open, which in turn causes the V-belt to move outward on the CVT front pulley. The transmission ratio changes in favor of higherspeed. When the scooter slows down and the engine speed is reduced, the torque spring is compressed again and the V-belt returns to a lower position on the front pulley.
soft or hard contra spring?
The choice of torque spring depends on different engine components, you need to find the right balance here.
- A spring that is too hard cannot fully expand. Acceleration is improved, but the V-belt cannot move outward to the maxi and top speed will be lowered.
- A spring that is too soft will relax too quickly, affecting the pull of your scooter.
Tip: To determine whether the V-belt can move to its maximum achievable position, you can mark the maximum position with a felt-tip pen on the CVT. If the mark disappears, this indicates that the belt actually moves up to the max position, i.e. the spring is not too hard.
How to change the torque spring ?
Torque Spring Malossi white Yamaha Aerox / BW's | |
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Article no. | M297047.W0 |
EAN | 4260088511720 |
Weight | 0,08 kg |
Brand | Malossi |
Product type | Torque spring |
Clutch diameter | 105mm |
Spring rate | +30% |
Colour | White |
Colour version | White |