Description
Malossi Torque Spring green for Yamaha T-Max 500 - 530cc - softer than original spring (- 39%).
Many riders underestimate to what degree engine performance can be improved by exchanging the original torque (or contra) spring with a softer or harder one. The torque spring puts pressure on the torque drive and influences the shifting characteristics of the CVT which in turn has a considerable impact on acceleration and top speed. Keep in mind that it may be necessary to replace the variator weights as well.
The spring is made from tempered silicum steel alloy with high carbon content to withstand a lot of pressure and heat / variations in temperature; in combination with the HQ top coat it is basically rustproof.
Suitable for Yamaha T-Max 500 - 530cc.
- length: 156.5mm
- outer diameter: 70.3mm
- wire diameter: 5.5mm
- spring rate: 6.8K (- 39%)
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 green Yamaha Tmax 500 - 530cc | |
|---|---|
| Article no. | M2914401.G0 |
| Weight | 0,10 kg |
| Brand | Malossi |
| Product type | Torque spring |
| Range | Standard |
| Spring rate | -39% |
| Colour | Green |