Offset line crown 29Z bronze insert

The crown that the inline mounting with Offset pod needs

The Offset line 29Z crown gear with bronze insert (ref. SIGO29-BZ) from Slot.it is designed for those setups where the motor is positioned inline — that is, longitudinally, in line with the rear axle — and an Offset pod is used to reposition the assembly and optimise the weight distribution of the car.

Technical specifications

• Number of teeth: 29Z
• Insert: bronze
• Compatible axle diameter: 2.38 mm
• Motor configuration: inline with Offset pod
• Brand: Slot.it

Function and performance

The bronze insert is a common choice in precision transmission parts within competitive slot racing. Bronze offers reduced friction on the metal axle, improves the durability of the assembly, and allows for smooth and consistent rotation of the crown gear. This translates into a more efficient transmission between pinion and crown, with less energy loss and greater stability in the motor's response.

With 29 teeth, this crown gear sits in a mid-high range that favours top speed over acceleration at starts. The choice of the number of teeth should always be coordinated with the pinion mounted on the motor to achieve the desired gear ratio according to the track layout and race conditions.

Compatibility and mounting

This crown gear is designed exclusively for use with Offset pod. It is not interchangeable with Sidewinder or Anglewinder setups without first verifying the chassis geometry. The compatible axle is 2.38 mm, the most common standard in Slot.it transmission assemblies for Sport track (Scaleauto, Slot.it).

Before mounting, it is advisable to check the alignment between crown and pinion to avoid vibrations or premature wear. A good check of the lateral play and minimal lubrication on the axle are sufficient to ensure the correct functioning of the transmission.

Who is this crown gear for?

It is aimed at preparers and club racers who work with inline chassis in Offset configuration and need replacement parts or want to explore different gear ratios. It is also useful for those who build or modify their own chassis and seek quality components from a leading brand in competitive slot racing.

Frequently asked questions

Can I use this crown gear in a Sidewinder setup?

No. This crown gear is designed solely for motors in the inline position with Offset pod. In a Sidewinder setup, the motor is transverse to the rear axle and requires crowns with different geometry and positioning.

What advantage does the bronze insert have over other materials?

Bronze reduces friction between crown and axle, improves the durability of the assembly, and provides smoother rotation. It is a material widely used in precision parts within competitive slot racing due to its balance between wear resistance and low friction coefficient.

Which pinion should I combine it with to achieve a good gear ratio?

It depends on the track layout and the motor used. As a guideline, a higher crown/pinion ratio (for example, 29Z with a small pinion) favours top speed; a lower ratio improves acceleration. We recommend consulting the Slot.it gear ratio charts or testing on track to adjust according to your needs.

Is it compatible with Scalextric or Ninco track (Universal track)?

The crown gear itself is an internal component of the car and does not depend on the type of track. However, being a part of the Slot.it system, it is designed for chassis and transmission assemblies of this brand, typically used on Sport track (Scaleauto, Slot.it).

Does it require lubrication?

Minimal lubrication is recommended at the contact point between the axle and the bronze insert. Use only a small amount of specific slot lubricant; excess can attract dirt and impair performance.

The Slot.it SIGO29-BZ is a 29-tooth inline Offset crown gear with a bronze insert, designed for 2.38 mm axles. A reliable and precise transmission component for competitive slot car racing, offering smooth power transfer and extended durability. Compatible with Slot.it inline motor configurations using Offset pod systems. Ideal for club racers and serious hobbyists looking for quality replacement parts and transmission tuning options.