35z crown gear 17.5 mm lightweight plastic Sidewinder

Slot.it SIGS17535-LPL: lightweight cross crown for serious tuners

Within Slot.it's spare parts catalogue for 1:32 scale, the crown SIGS17535-LPL represents one of the most technical options in the cross range. With 35 teeth and a diameter of 17.5 mm, it belongs to the LPL (Light Plastic) series, characterised by a core with relief holes that minimise rotational mass without compromising the robustness of the assembly.

Function and performance

The aim of any lightweight crown is to reduce the inertia of the rear axle. In a Sidewinder configuration —where the motor operates parallel to the rear axle— the rotational inertia of the drivetrain directly influences the ability to accelerate from low speeds and the intensity of engine braking when lifting the throttle. With 35 teeth, this crown provides a short gear ratio that favours precisely that: immediate response and well-defined braking, especially useful on tracks with many slow corners or rhythm changes.

The diameter of 17.5 mm, specific to this reference, directly affects the final gear ratio depending on the chosen pinion. Before installing it, it is advisable to check that the pinion on the chassis is compatible with this module and diameter to ensure a clean and quiet engagement.

Compatibility and installation

This crown is designed for Slot.it Sidewinder chassis and is secured to the rear axle using an M2 Allen screw. The low-friction self-lubricating technical plastic used by Slot.it in this series reduces heat generated during long sessions and extends the lifespan of the entire drivetrain. For optimal installation, we recommend:

• Checking the alignment between the crown and pinion before tightening the securing screw.
• Ensuring there is no excessive lateral play in the axle.
• Inspecting the engagement after the first laps to ensure there is no noise or irregular wear.

Common mistakes when installing lightweight crowns

One of the most common failures is over-tightening the Allen screw without properly centring the crown, which creates an eccentric rotation resulting in vibrations and increased wear on the pinion. Another common mistake is combining a crown with an incompatible module or diameter with the pinion available on the chassis, leading to forced engagement that increases temperature and shortens the lifespan of both parts. It is also advisable to avoid applying excessive lubricants on self-lubricating plastics, as they can attract dirt and deteriorate the engagement.

User profile and applications

The SIGS17535-LPL is a component aimed at tuners and club racers working with Slot.it cars in 1:32 scale who seek to optimise the drivetrain for short or technical tracks. The 35-tooth ratio, combined with the lightweight design of the LPL, is particularly suitable for:

• Sport track circuits with many chicanes or hairpins.
• Configurations that prioritise engine braking over top speed.
• Competition setups where every gram of the drivetrain counts.

Frequently asked questions

What is the difference between an LPL crown and a standard Slot.it crown?

The LPL series incorporates relief holes in the core that reduce weight and, therefore, rotational inertia. The result is a livelier response in acceleration and sharper engine braking compared to a solid crown with the same number of teeth.

Which pinions is this 35-tooth crown compatible with?

Compatibility depends on the module of the pinion. Slot.it works with a specific module across its entire drivetrain range for Sidewinder; it is advisable to confirm that the pinion on the chassis shares that module before combining parts from different references.

Can this crown be used in Inline or Anglewinder configurations?

No. This crown is specifically designed for Sidewinder mounts, where the motor operates parallel to the rear axle. For Inline or Anglewinder configurations, there are specific references in the Slot.it catalogue.

Does it require lubrication?

The technical plastic used is self-lubricating, so it does not require regular lubrication. If any lubricant is to be applied, it should be in minimal quantity and of the type recommended for precision plastics, avoiding any aggressive products that could degrade the material.

How long does a lightweight plastic crown last compared to a metal one?

Under normal usage conditions with standard club motors, the durability is more than sufficient for several seasons. Metal crowns offer greater longevity against very high torque motors but add inertia. The choice depends on the balance between dynamic performance and durability that each tuner seeks.

What screw is used to secure the crown to the axle?

The securing is done using an M2 Allen screw, the standard commonly used in Slot.it transverse crowns for 1:32 scale.

The Slot.it SIGS17535-LPL is a 35-tooth, 17.5 mm lightweight plastic crown designed for Sidewinder configurations in 1:32 scale slot cars. Part of the LPL (Light Plastic) series, its relieved core minimises rotational inertia for sharper acceleration and stronger engine braking. A precision tuning component for competitive club racing on Sport track layouts.