Lightened angle crown gear in ergal 27Z

Precision and lightness at the service of the anglewinder: the lightweight 27-tooth crown gear in ergal from Slot.it

When assembly matters as much as the car itself, choosing each component of the drivetrain wisely makes a difference. This lightweight crown gear from Slot.it with reference SIGA1627E meets that demand: 27 machined teeth in ergal — a high-strength, low-weight aluminium alloy — designed for those opting for the anglewinder configuration and wanting to make the most of every gram and every tenth.

Features and function

• Number of teeth: 27Z
• Material: Ergal (high-strength aluminium alloy)
• Lightweight design: reduces rotating mass for quicker response and less inertia during braking and acceleration
• Compatible axle diameter: 2.38 mm
• Motor configuration: anglewinder (motor at an angle to the rear axle)

Why choose ergal?

Ergal is an aluminium alloy widely used in competitive slot preparation precisely because it combines notable stiffness with a weight significantly lower than steel. In a crown gear, this translates to less rotational inertia: the car responds more quickly to the throttle and brakes with greater precision. For Sport track systems — Slot.it's proprietary system — where times are adjusted in hundredths, this type of detail is not a whim, it is a real advantage.

Compatibility and assembly

This crown gear is designed for a rear axle of 2.38 mm, a standard measurement in most Slot.it assemblies. It is essential to verify before assembly that the motor pinion is compatible in module with this crown gear to ensure a clean engagement without excessive play. Slot.it offers a wide range of pinions that allow for the construction of the optimal gear ratio according to the circuit and motor used.

Recommended applications

Primarily aimed at competition assemblies or advanced preparation where the goal is to optimise the drivetrain of an anglewinder. It is a particularly valued component in club categories where the regulations allow for free transmission work. If you are building or fine-tuning an anglewinder chassis and want to reduce weight without sacrificing strength, this crown gear is a direct and proven option.

Considerations

• Check the compatibility of the pinion module before assembly.
• Ergal is durable but somewhat softer than steel: in intensive use on abrasive tracks, it is advisable to regularly check for wear.
• Ensure that the rear axle measures exactly 2.38 mm for a proper fit.

Frequently asked questions

What is the difference between an ergal crown gear and a steel one?

Ergal weighs significantly less than steel, which reduces the rotational inertia of the assembly. This improves response in acceleration and braking, at the cost of slightly lower durability against abrasive wear. For use in club competition or sports preparation, the gain in agility usually more than compensates.

Is this crown gear compatible with any anglewinder chassis?

It depends on the diameter of the rear axle: this crown gear is for a 2.38 mm axle. If your chassis uses that measurement, the assembly is direct. Also check the pinion module to ensure correct engagement.

How many teeth do I need on the crown gear?

The relationship between the number of teeth on the pinion and the crown gear determines the gear reduction. A 27-tooth crown gear offers a balance between acceleration and top speed, although the ideal choice depends on the motor, circuit, and pinion you use. It is common to try several combinations until finding the one that best suits each track.

Can I use this crown gear in an inline or sidewinder assembly?

It is specifically designed for anglewinder configurations, where the motor is angled relative to the rear axle. Although it could technically be mounted on other systems if the measurements match, it is not the application for which it is optimised.

Do I need any special tools for assembly?

Mounting a crown gear on a precision axle requires suitable tools to ensure uniform pressure and avoid deformation. Slot.it and brands like Sloting Plus offer specific preparation tools for this type of work.

The Slot.it SIGA1627E is a 27-tooth lightweight ergal crown gear designed for anglewinder motor configurations in 1/32 scale slot car racing. Compatible with 2.38 mm rear axles, this aluminium alloy crown reduces rotational mass for faster acceleration response and improved braking precision. A go-to upgrade for club-level competitors and serious builders looking to fine-tune their drivetrain on Sport track systems.