Offset line crown 29Z aluminium insert

The Slot.it Offset Inline Crown Gear that Makes a Difference in Your Transmission

When preparing a slot car with an inline motor configuration, every detail of the transmission matters. This 29-tooth crown gear with an aluminium insert from Slot.it is exclusively designed for use with Offset pods, precisely completing the kinematic chain of the rear end.

Main Features

• Number of teeth: 29Z
• Insert: aluminium
• Compatible axle diameter: 2.38 mm
• Motor configuration: inline (longitudinal motor, in line with the car)
• Exclusive use: Offset pod
• Reference: SIGO29-AL

Function and Performance

The aluminium insert provides rigidity and reduces weight at the same time, two factors that directly influence the response of the transmission. A well-fitted insert on the axle eliminates play, prevents vibrations, and allows the motor's power to reach the rear wheel cleanly. With 29 teeth, this crown gear offers a balanced gear ratio, suitable for a wide variety of pinion configurations depending on the type of track and motor used.

Compatibility and Installation

This crown gear is designed to work exclusively with the Slot.it Offset pod in inline configurations. It is essential to respect this compatibility: the angle and position of the motor in an Offset pod differ from other configurations (Sidewinder or Anglewinder), and using an unsuitable crown gear can lead to poor meshing or premature wear of the teeth.

The 2.38 mm axle is the standard in most Slot.it chassis. Before installation, it is advisable to check that the axle is in good condition and free of burrs that could prevent a proper fit of the aluminium insert.

Common Mistakes

• Trying to use this crown gear with a Sidewinder or Anglewinder pod: the meshing geometry will not be correct.
• Installing the crown gear without checking alignment with the motor pinion: even minimal misalignment causes accelerated wear and loss of efficiency.
• Forcing the insert onto a worn or incorrectly sized axle: aluminium is precise but unforgiving of careless installations.

Ideal for…

Preparers and enthusiasts working with Slot.it chassis in inline configuration with Offset pods who are looking for a replacement crown gear or want to experiment with different gear ratios. It is also useful for those building their own chassis while respecting the brand's Offset geometry.

Frequently Asked Questions

Can I use this crown gear with a Slot.it Sidewinder pod?

No. This crown gear is designed solely for Offset pods in inline configuration. The meshing angle of a Sidewinder pod is different, and the result would not be correct.

Which pinions is it compatible with?

The crown gear itself is compatible with the standard pinions of the Slot.it system, but the choice of the number of teeth on the pinion depends on the motor and the type of track. Refer to the Slot.it gear ratio tables to adjust the combination to your setup.

What advantage does the aluminium insert have over plastic?

Aluminium offers greater rigidity and a more precise fit on the axle, reducing play and vibrations. Additionally, it is more resistant to heat generated during long running sessions.

Is the 2.38 mm axle the standard for Slot.it?

Yes, 2.38 mm is the usual rear axle diameter in Slot.it chassis and kits. If your setup uses a different diameter, this crown gear will not be suitable.

Is it necessary to glue the crown gear to the axle?

Generally, the aluminium insert allows for a sufficient press fit for running, but in competitive applications, many preparers apply a small amount of locking adhesive to ensure that the crown gear does not shift under load. Refer to the manufacturer's recommendations or your trusted preparer's advice.

The Slot.it SIGO29-AL is a 29-tooth inline crown gear with an aluminium insert, engineered for Offset motor pods in 1/32 slot car racing. Designed for a 2.38 mm axle, it delivers precise mesh, reduced vibration and efficient power transfer. An essential upgrade or replacement part for Slot.it inline chassis builds and club-level competition preparation.