Polini Variator "Hi Speed Evolution R02" d=16mm Yamaha Aerox / Nitro
Description
As it was developed to be used with the original torque drive, it has to be used with a standard (preferably reinforced) drive belt. Pulley angles were designed to improve acceleration (compared to stock variator).
Ideally suited for a sports or racing engine set-up.
The kit includes 2 sets of 19x15.5mm roller weights and a reinforced (+ 8%) torque spring plus "Evo Slider" anti-torsion spring seat.
Note: variator sleeve is 16mm, that means that it can only be used with 16mm crankshafts (smooth spline).
scooter CVT
Modern scooters are equipped with a continuously variable transmission, the so-called CVT, also called variator.
CVT Parts:
- Front pulley, movable. It contains the variator weights and has a special shape with an inclined surface to allow the V-belt to move freely up and down.
- Ramp plate: Holds the weights in place.
- Variator sleeve: Serves as a bearing for the variator, which moves axially back and forth, i.e., opens and closes.
- CVT roller weights: Adjustment weights that play a critical role in function and performance.
original, Sport and Oversize CVTs
- Original: Original or OEM quality CVTs are equipped with a restrictor to limit the speed to 45km/h. There are riders who remove the restrictor to derestrict their scooter and unleash the full performance without restrictions.
- Sport: Sport CVTs are lighter than the original and are characterized by special angles and a special coating, which increases the top speed, but especially acceleration.
- Oversize: Based on the same principle as the Sport CVT, but has larger dimensions. With an oversize / overrange vario, the performance of the scooter can be increased even further.
You should also always replace the V-belt when replacing the CVT or go for a complete CVT kit.
How to install a CVT transmission ?
Polini Variator "Hi Speed Evolution R02" d=16mm Yamaha Aerox / Nitro | |
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Article no. | U241.708 |
Weight | 0,74 kg |
Series | Evolution |
Brand | Polini |
Product type | CVT |
Range | Oversize |
Roller size | 19 x 15,5 mm |