0.1mm spacer for modular crown x10

Axial adjustment to the tenth of a millimetre with Slot.it modular crown spacers

When working with Slot.it's modular crown system, controlling axial play is not a whim: it is part of the serious preparation process. These spacers of 0.1 mm allow for the accumulation or subtraction of tenths with total precision, until finding the exact point where the crown rotates without unnecessary play and without friction.

Function and performance

The spacer acts as a shim between the elements of the transmission assembly. Placed on the axle or between the crown and the support, it allows:

• To eliminate excessive axial play that generates noise and loss of efficiency.
• To avoid tightening that would cause friction and premature wear.
• To find the optimal working point by combining several units from the pack.

With 10 units per pack, you have room to adjust several setups or to experiment with different configurations without running short.

Compatibility

This spacer is designed for the Slot.it modular crown system. If you regularly work with chassis and drivetrains from this brand —whether in sidewinder, inline or anglewinder configuration— you will find these spacers a regular part of the tuning process.

Assembly and preparation

The usual procedure consists of assembling the transmission unit without spacers, measuring the existing axial play, and adding the necessary number of pieces to reduce it to the functional minimum. The scale of 0.1 mm per unit facilitates calculation: if you have 0.3 mm of play, three spacers will correct it cleanly.

It is recommended to check the free rotation of the axle after each adjustment before finalising the assembly.

Common mistakes

• Stacking too many spacers: this can generate lateral friction on the spacer itself or preload the bearing.
• Not checking free rotation: an apparently correct assembly may hide friction that is only detected by manually turning the axle.
• Mixing spacers of different thicknesses without keeping track: keep a record of the number and thickness of pieces used to reproduce the adjustment in future preparations.

Frequently asked questions

What is the purpose of axial play in a modular crown?

Axial play is the longitudinal movement of the axle within the assembly. Excessive play generates imprecision in the transmission and noise; too tight an adjustment causes friction and heat. The spacer allows for finding the optimal midpoint.

How many spacers do I need per assembly?

It depends on the axial play measured in each set. Typically, between one and three are used, although it can vary. That’s why the pack of 10 units is practical: it covers several assemblies or different configurations of the same car.

Are they compatible with all Slot.it axles?

They are designed for the Slot.it modular crown system. Check your chassis documentation or the breakdown of your drivetrain to confirm exact compatibility with your configuration.

Can I combine this spacer with other thicknesses from the Slot.it range?

Yes. Slot.it offers spacers in different thicknesses within its modular crown accessory range, allowing for precise combinations for any measure of axial play.

Slot.it SIGMS10 modular crown spacers, 0.1 mm thick, pack of 10 units. Designed for precise axial play adjustment on Slot.it modular crown assemblies. Essential for serious slot car preparation, compatible with sidewinder, inline and anglewinder drivetrain configurations. A must-have detail for club racers and performance-oriented builders looking for smooth, efficient power transmission.