Lightened Ergal Z30 Anglewinder Crown Gear

A lightened Ergal crown gear from Slot.it designed to get the best out of your anglewinder

The Lightened Anglewinder Ergal Z30 Crown Gear (SIGA1630E) from Slot.it is a transmission component intended for use in anglewinder motor configurations, where the motor is positioned at an angle to the rear axle. With 30 teeth and a pitch compatible with the corresponding pinion from the Slot.it range, this crown gear is made from Ergal alloy — high-strength, lightweight aluminium — and features a lightened design that reduces rotating mass without compromising stiffness or tooth precision.

Main features

• Number of teeth: 30 (Z30)
• Axle diameter: 2.38 mm
• Material: Ergal (high-strength aluminium alloy)
• Lightened design: strategic cutouts that reduce inertia without losing robustness
• Application: anglewinder motor
• Reference: SIGA1630E

Function and performance

In an anglewinder configuration, the crown gear is the final link in the transmission chain: it receives the motion from the pinion mounted on the motor shaft and transforms it into traction on the rear axle. The lower its inertia, the quicker the response in acceleration and the more precise the modulation in corners.

Ergal plays a dual role here: it is considerably lighter than the high-density technical plastic used in standard range crown gears, yet maintains a stiffness that prevents deformation under load. The result is a component that withstands long competition sessions without degrading the tooth profile or losing concentricity.

Compatibility and installation

This crown gear is designed for 2.38 mm axles, a standard measurement in most Slot.it chassis and many aftermarket chassis that follow this same standard. Before installation, it is advisable to check that the motor pinion has the correct tooth pitch to work with Slot.it anglewinder crown gears from this series.

The fit to the axle is achieved using the usual lateral fixing screw found on Slot.it crown gears. It is recommended to apply a minimal drop of low-strength threadlock if the crown gear will be subjected to intense vibrations, and to check the clearance between the crown gear and pinion before each important session.

Common mistakes

• Confusing the anglewinder variant with the sidewinder or inline: each motor configuration requires its own specific crown gear. Fitting an incorrect crown gear can prevent proper axle alignment.
• Over-tightening the fixing screw on the axle, which can deform the central hole and create eccentricity.
• Not checking the wear on the pinion teeth before installing a new crown gear: a worn pinion will accelerate the deterioration of the crown gear.

Ideal for…

This crown gear is the logical choice for those preparing or fine-tuning an anglewinder chassis looking to minimise inertia in the rear end. It is particularly interesting in competition categories where regulations allow aftermarket aluminium parts and where every tenth of a second in response out of the corner makes a difference.

Frequently asked questions

What is the difference between a crown gear for anglewinder and one for sidewinder?

The tooth geometry and the pinion attack angle vary according to the motor layout. In an anglewinder, the motor is tilted relative to the rear axle, which affects the relative position between pinion and crown gear. Using a crown gear designed for sidewinder in an anglewinder can cause incorrect tooth contact, increased noise, and premature wear.

Is Ergal more fragile than plastic in case of impact?

Ergal is a high-toughness aluminium alloy: it withstands impacts well during track use. In very violent falls or collisions, it may deform, but under normal competition conditions, its durability surpasses that of technical plastic crown gears.

Which pinions is this crown gear compatible with?

It should be combined with pinions that have the corresponding tooth pitch for the Slot.it anglewinder range. We recommend consulting the Slot.it transmission ratio chart or contacting our team to ensure you choose the pinion with the correct number of teeth for your target transmission ratio.

Do I need special tools to install it?

No special tools are required: a screwdriver or Allen key of the appropriate size for the fixing screw is sufficient. It is advisable to have a caliper to check the clearance between the crown gear and pinion once installed.

When should I change it?

When the tooth profile shows visible wear, there is dry noise in the transmission, or there is a loss of smoothness in the rotation. In competition, many preparers check it every few race days to ensure the transmission operates under optimal conditions.

The Slot.it SIGA1630E is a lightened Ergal aluminium anglewinder crown gear with 30 teeth, designed for 2.38 mm axles. Its reduced rotational inertia makes it a go-to upgrade for slot car racing enthusiasts focused on drivetrain efficiency in anglewinder setups. Compatible with Slot.it's anglewinder pinion range, this crown gear suits competitive 1/32 slot racing at club and championship level.