28z angled crown gear

28-Tooth Anglewinder Crown Gear for Demanding Slot Preparations

The 28z Angle Crown (ref. AV20654) from Avant Slot is designed for those working with anglewinder setups, where the motor is tilted relative to the rear axle. Choosing the right crown gear is one of those details that makes the difference between a car that runs smoothly and one that does not respond as expected.

Technical Specifications

• Teeth: 28z
• Diameter: 16 mm
• Compatible axle: 2.38 mm
• Fixing system: M2 screw (included)
• Mounting type: anglewinder

Function and Performance

With 28 teeth and a diameter of 16 mm, this crown gear offers a moderate gear ratio, suitable for long straights where top speed is sought as well as for balanced configurations on mixed circuits. The M2 screw fixing ensures a firm fit on the axle, reducing the risk of play that could generate vibrations or loss of efficiency in power transmission.

The M2 screw is included, so you don't need to look for it separately: a practical detail that Avant Slot takes care of in its spare parts.

Compatibility and Mounting

This crown gear is specifically designed for 2.38 mm axles, the most common diameter in competitive slot preparations. Before mounting, it is advisable to check that the motor pinion is compatible with the module of this crown gear to ensure correct meshing and prevent premature wear.

In an anglewinder configuration, alignment between the crown and pinion is especially important given the angle of the motor. Careful mounting, with the axle perfectly perpendicular to the chassis and the meshing gap adjusted, will make the most of this component.

Ideal for…

• Preparers working with anglewinder chassis in 1/32 scale.
• Club competitors looking to fine-tune the gear ratio.
• Repairs or preventive replacements of the original crown gear.

Common Mistakes to Avoid

• Not checking the pinion module: a 28z crown poorly matched with the pinion generates noise, vibration, and accelerated wear.
• Over-tightening the M2 screw: it can deform the crown hub. Adjust firmly, but without forcing.
• Mounting on the wrong axle: this crown is for 2.38 mm; it will not fit correctly on a 3 mm axle.

Frequently Asked Questions

Is this crown compatible with 3 mm axles?

No. This crown is designed exclusively for 2.38 mm axles. For 3 mm axles, you will need a specific reference with that housing diameter.

Does the M2 screw really come included?

Yes, the M2 screw needed for fixing is included with the crown, as indicated by Avant Slot in its description.

Can I use this crown in a sidewinder or inline configuration?

Technically, the axle diameter may match, but this crown is optimised for the angle specific to an anglewinder setup. In sidewinder or inline, the meshing geometry may not be ideal; check compatibility with your motor pinion before mounting.

How many teeth should the pinion have to combine with this 28z crown?

It depends on the gear ratio you are looking for and the motor you are using. The most common combinations in club competition range from 9 to 12 teeth pinions, but the most important thing is that the module (the tooth size) matches between pinion and crown for correct meshing.

How often should I check or change the crown?

In competitive use, check the wear of the teeth after each intense session. Irregular wear or excessive play in the meshing are signs that it is time to replace it.

The Avant Slot AV20654 is a 28-tooth anglewinder crown gear for 2.38 mm axles, featuring a 16 mm diameter and M2 screw fixing (included). Designed for slot car competition setups, it delivers reliable power transmission in anglewinder configurations. A go-to replacement and tuning part for 1/32 scale slot car enthusiasts and club racers.