Pulleys 11mm x2

11mm Pulleys Avant Slot AV20442: Precision on Every Lap

In the all-wheel drive systems that Avant Slot installs in its models, the pulley set is one of the elements that most influences the final behaviour of the car. These 11mm pulleys (reference AV20442) come in a pack of 2 units and are manufactured to fit the exact geometry of the axles, ensuring a transmission without play and without oscillations that compromise performance.

Function and Performance

The pulley is the component that receives and transmits the movement of the belt between the front and rear axles in cars with four-wheel drive. The 11mm diameter of this reference determines the gear ratio and, therefore, the car's response in acceleration, braking, and lateral traction. A well-chosen size smooths out inertia changes and improves stability in winding sections, where all-wheel drive makes a difference compared to others.

Thanks to the precise centring on the axle, the belt operates at all times on the correct plane, without slipping or asymmetric wear that shortens the lifespan of the transmission set.

Compatibility

These pulleys are designed as an official spare part from Avant Slot for the brand's models that incorporate an all-wheel drive system. Avant Slot is one of the few brands in the 1/32 segment that manufactures and markets spare parts with technical rigor, something that is appreciated by both club preparers and those who simply want to keep their model in perfect condition after a breakage.

Before installing them, check that the diameter and type of axle of your model match the specifications of reference AV20442. If you have doubts, consult the official parts diagram of your Avant Slot car.

Assembly and Preparation

The assembly of the pulleys does not require special tools, but it does require attention to detail. Some practical tips:

• Clean the axle before installing the pulley to remove any grease or dirt that may cause play.
• Check that the belt maintains the correct tension once installed: neither too tight (increases friction) nor too loose (causes jumps and loss of traction).
• Check the alignment between the front and rear pulleys to avoid lateral wear of the belt.

Common Mistakes

• Mixing pulleys of different diameters on the same front and rear axle alters the gear ratio and can cause erratic behaviour in all-wheel drive.
• Forcing the pulley onto the axle without the correct measurement damages the part and can misalign it, generating vibrations while running.
• Ignoring the condition of the belt when replacing the pulleys: if the belt has play or signs of wear, it is time to change it as well.

Frequently Asked Questions

Are these pulleys compatible with any slot car with all-wheel drive?

No. They are a specific spare part from Avant Slot, designed for the brand's models that incorporate all-wheel drive. Check your car's parts diagram before ordering to ensure they correspond to your reference.

What is the difference between an 11mm pulley and one with a smaller diameter?

The diameter of the pulley directly influences the gear ratio between axles. A larger pulley transmits more torque but may reduce top speed; a smaller one has the opposite effect. The choice depends on the circuit and driving style.

Are they sold individually or in a pack?

Reference AV20442 includes 2 pulleys of 11mm.

When should the pulleys be replaced?

When you detect unusual vibrations while running, loss of traction in acceleration sections, or visible wear on the belt indicating misalignment of the pulley. Periodic inspection of the transmission train prolongs the life of the entire set.

Do I need any special tools to install them?

Generally no, although an axle adjustment wrench and a belt tension gauge facilitate a more precise and repeatable assembly, especially if you are preparing the car for competition.

Avant Slot AV20442 11mm pulleys, set of 2 units, official spare part for 1/32 slot cars with four-wheel drive transmission. Designed for precise belt alignment and consistent power transfer, these pulleys are the go-to choice for club racers and hobbyists looking to keep their Avant Slot models in top mechanical condition. Compatible with Avant Slot AWD systems; check your model's parts diagram before ordering.