35d Crown Gear. Anglewinder

Slot.it Precision on Every Lap: 35-Tooth Anglewinder Crown Gear in Lightweight Ergal

The SIGA1835E crown gear from Slot.it is specifically designed for anglewinder configurations, meaning the motor is positioned at an angle relative to the rear axle. With 35 teeth and a diameter of 18 mm, it is made from ergal — a high-strength aluminium alloy — and features a lightweight profile that reduces rotating weight without compromising gear stiffness.

Function and Performance

In an anglewinder configuration, the crown gear operates on an inclined plane relative to the rear axle, which requires very precise tooth geometry to ensure clean meshing with the pinion. Slot.it pays close attention to this detail: the dimensional tolerance of this crown allows for smooth transmission, without play or vibrations that could hinder cornering speed or acceleration response.

The lightweight ergal offers two specific advantages: reduced rotational inertia — the car responds more quickly to throttle changes — and a weight reduction in the drivetrain area that favours chassis balance.

Compatibility and Installation

This crown is part of Slot.it's modular transmission system, designed for enthusiasts to adjust the gear ratio by changing the crown or pinion according to the track and category. It is intended to be mounted on rear axles compatible with the Slot.it standard in anglewinder configurations.

Before mounting the crown, it is advisable to check that the alignment between the pinion and crown is correct: even minimal misalignment in an anglewinder can cause premature wear or gear noise. It is recommended to use a centre distance gauge to adjust the position accurately.

Installation and Preparation

• Check the alignment of the motor before permanently securing the crown.
• Apply a minimal amount of specific slot gear lubricant; excess attracts dirt.
• Check the backlash between the pinion and crown: it should be minimal but present to avoid binding.
• Although ergal is durable, it can be damaged if forced into a cold fit. Ensure the axle is clean before mounting.

Ideal for…

This crown fits particularly well in preparation projects where the aim is to reduce the total weight of the drivetrain and fine-tune the gear ratio. It is a common choice in club racing and in categories where the regulations allow for free transmission modifications.

Frequently Asked Questions

What is the difference between an anglewinder crown and a sidewinder?

In a sidewinder configuration, the motor is parallel to the rear axle, and the crown operates on a plane that is practically perpendicular to the axle. In the anglewinder, the motor is tilted at an angle relative to the rear axle, so the crown requires a specific geometry for that working angle. They are not interchangeable.

Which pinions is this crown compatible with?

Slot.it designs its crowns to work with the pinions from its own modular system. For optimal gear ratio and meshing, we recommend using Slot.it pinions from the same family. Consult the Slot.it catalogue to identify the correct module and pressure angle.

What advantage does lightweight ergal offer over a plastic crown?

Ergal (aluminium alloy) provides greater dimensional stiffness and wear resistance. The lightweight design reduces rotational inertia, improving throttle response. Plastic crowns are suitable for recreational use, but in competition, ergal offers more consistency over multiple sessions.

Can I use this crown on an inline chassis?

No. This crown is designed for anglewinder configurations. In an inline setup, the motor is in line with the rear axle and requires crowns with a different geometry. Using an anglewinder crown on an inline chassis would result in incorrect meshing.

How do I know if I need 35 teeth or a different ratio?

The gear ratio depends on the number of teeth on the crown and the pinion. More teeth on the crown relative to the pinion results in greater torque multiplication but lower top speed. The ideal choice depends on the track layout, motor power, and category regulations. A slow track with many curves typically requires shorter ratios; a fast and open track, longer ratios.

The Slot.it SIGA1835E is a 35-tooth anglewinder crown gear machined from lightweight ergal aluminium alloy, featuring an 18 mm diameter. Designed for anglewinder motor configurations, it delivers precise meshing, reduced rotational inertia and consistent performance across club racing and competitive slot car events. A reliable upgrade for those looking to fine-tune their drivetrain with quality Slot.it components.