CHOOSE YOUR PEBBLES WELL

GALE PERFORMANCETS INVERTER

THE GALESTS OF A SCOOTER: WHEN TO CHANGE THEM?

THE GALESTS DEPENDING ON THE SCOOTER MODEL

The dimension of the rollers depends on the type of variator installed on your scooter. Each type of variator has specific roller measurements. To adjust the variation, the weight of the rollers is used so as to be able to perfectly adjust the variation of the scooter to the desired speed.

Too heavy rollers cause the variator to close before the clutch engages.

If they're too light, your engine will rev high, and grind "in a vacuum". On the contrary, if they are too heavy, your engine will rev too low, which will instantly affect performance.

Hint: if you have an acceleration hole between XNUMX and XNUMX km/h on an original scooter (cylinder level) your rollers are too heavy!

You can also check that your belt goes up to the top of your drive. Trace z a line at the marker from the center to the outside of your dimmer, take a spin and see if it has faded enough!

It is therefore advisable to choose them carefully, adjusting their weight according to the engine configuration of your scooter.


XNUMX dimensions to remember:

• - Ø XNUMX xXNUMXmm for MINARELLI engine ( Booster / Nitro / Malaguti ...)
• - Ø XNUMX x XNUMXmm for PEUGEOT and PIAGGIO engines ( and for SXNUMXR variators)

The total weight ranges from XNUMXg to XNUMXg (XNUMXg to XNUMXg/roller).


There are several kinds of pebbles (heavy, medium and light). The pebbles are spread par weight:

• - 100 g to 100 g for acceleration
• - 100 g to 100 g for balance
• - 100g to 100g for speed

The difference in weight between the heaviest and the lightest roller should not be too great.

To fully understand the role of the rollers on a scooter, you must first explain how the variator . On a scooter, it serves as a sort of gearbox. In fact, the driver of a scooter does not change gears, they change according to the engine speed thanks to the variator which is responsible for changing the reduction ratio of the transmission during acceleration.

In practice, the drive consists of:

• With a fixed cheek
• A movable cheek in which there are XNUMX or XNUMX rollers. There are several types of pebbles (heavy, medium and light)

When the scooter is started, the motor drives the variator and the running of the belt. The higher the motor rotation speed, the faster the drive rotates. The rollers then move away from the inside towards the outside of the mobile wheel. Thanks to the force centrifugal, the rollers then cause the displacement of the movable flange (it approaches the fixed flange) which changes the race of the belt (with a higher radius). This is what allows the scooter to 'automatically' shift gears.

CONCLUSION

EXAMPLES OF COMMON MODELS