13t pinion 6.3mm (x2)

The right pinion makes a difference in tuning your slot car

The 13z 6.3 mm pinion from Avant Slot (ref. AV20618) is one of those transmission components that, with an apparently small change, can completely transform a car's behaviour on track. This pack includes 2 units, designed for immediate installation as well as having a spare on hand in the workshop.

Function and performance

The pinion is the gear that connects the motor to the crown gear and determines the car's gear ratio. With 13 teeth and a diameter of 6.3 mm, this pinion from Avant Slot allows you to set up a gear ratio aimed at balancing acceleration and top speed according to the layout and the motor used.

• 13 teeth (13z): versatile gear ratio, suitable for a wide variety of configurations with standard crowns.
• Diameter 6.3 mm: specific measurement to consider to ensure the correct fit on the motor shaft.
• Pack of 2 units: ideal for always having a spare or for equipping two cars at once.

Compatibility and installation

This pinion is designed for use in cars and projects compatible with Avant Slot transmission systems. Always check that the diameter of the motor shaft matches the pinion hole and that the gear module is compatible with the crown gear you intend to use before installation. A clean fit, without excessive play or forced tightening, ensures efficient and quiet transmission.

Common mistakes in pinion installation

• Not checking the gear module: a pinion with a different module than the crown gear causes premature wear and noise.
• Installing the pinion misaligned: correct alignment between pinion and crown gear is essential to avoid vibrations and power loss.
• Over-tightening: can deform the pinion or damage the motor shaft. Use the appropriate tool and apply the right pressure.

Ideal for…

This pinion is a very practical option for enthusiasts who prepare and refine their cars with precision, both in club environments and for recreational use at home. It is also very useful to have several gear ratios on hand to experiment with different configurations depending on the circuit of the day.

Frequently asked questions

What does "13z" mean on a pinion?

The "z" refers to the number of teeth on the pinion. In this case, 13 teeth. Along with the number of teeth on the crown gear, it determines the car's gear ratio: fewer teeth on the pinion means more acceleration and less top speed; more teeth means higher top speed but less response at the start.

What does the value 6.3 mm indicate on this pinion?

The value 6.3 mm corresponds to the diameter of the pinion (or the primitive diameter of the gear). It is an essential piece of information to ensure that the pinion fits correctly with the crown gear and the car's transmission system. Always check this value before installation.

Does this pack include 2 identical pinions?

Yes. The pack AV20618 contains 2 pinions with 13 teeth and 6.3 mm, identical to each other. You can use them in two different cars or keep one as a spare.

Which crown gears is this pinion compatible with?

Compatibility depends on the gear module. We recommend consulting the technical data sheet from Avant Slot or verifying that the crown gear you are using has the same module as this pinion before combining them.

How does the number of teeth on the pinion affect track behaviour?

A pinion with fewer teeth combined with a large crown gear offers more acceleration, ideal for circuits with many curves. Increasing the number of teeth on the pinion (or reducing those on the crown gear) increases top speed, more suitable for fast and long layouts. Testing different ratios is part of fine-tuning in any serious setup.

Avant Slot pinions ref. AV20618 — 13 tooth, 6.3 mm slot car pinion gear, pack of 2 units. Compatible with Avant Slot transmission systems. Essential spare part for slot car tuning, drivetrain setup and gear ratio optimization. Available at Ministry of Hobby, your specialist slot car and scale modelling store.

Information not found

The exact gear module and the complete list of crown gears compatible with this pinion could not be confirmed with official sources. We recommend consulting directly with the manufacturer or contacting our team before making a purchase if you have compatibility concerns.