Yokomo YOKZCS80B Drive Gear Shims for Model Drivetrains  [YOKZCS80B]

Yokomo ZC-S80B - Drive Gear Shims
Price:
£1.70
Brand:
Yokomo
Model:
YOKZCS80B
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Gear shim specifications and use

This RC-scale component is intended to offer precise control over gear mesh and lateral spacing in model drivetrains. Drive gear shims act as slim spacers between mating gears or between a gear and its bearing face to correct play, prevent binding, and refine alignment without replacing major parts.

Fitting is usually straightforward: remove the relevant gear, add or remove a shim to alter axial siting, then refit and check mesh while turning slowly. Minor changes in shim thickness can impact noise levels, wear trends, and drivetrain feel, so proceed with small steps and re-check clearances after each adjustment.

As a tuning aid, these shims are an economical choice to fine-tune gear engagement when seeking quieter operation or reduced backlash. They are provided for use on scale RC models and for staged setup adjustments on the bench or at events.
Remark :
Due to limited stock availability, please notice that some Yokomo items may have to order from the factory and the ready time is around 4-6 weeks. Customer purchases the item is assumed to accept the waiting time which allows us to order directly from the manufacturer if the item is out of our warehouse.

When should I use a shim instead of replacing a gear?

Use a shim when the issue is axial play or minor misalignment; shims are a quick fix to improve mesh without the time and cost of a gear replacement.

How can I check compatibility with my gearset?

Measure the gear bore and shaft dimensions to ensure the shim will sit correctly; these shims are for general RC drivetrains but confirm fit on your model before final tuning.

Is there a risk of over-tightening mesh when using shims?

Yes, adding too much shim thickness can produce excessive preload and binding; always test under slow rotation and back off shims if you detect tight spots.

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