Team Associated RC18T 55T Spur Gear RC18-031A by 3Racing  [RC18-031A]

Team Associated RC18T Plastic Spur Gear 55T - 3RACING RC18-031A
Price:
USD$1.90
Brand:
3Racing
Model:
RC18-031A
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Precision 55T spur for RC18T gearboxes

This 55-tooth plastic spur, reference RC18-031A, is produced as an aftermarket replacement compatible with the Team Associated RC18T gearbox. It is intended to restore correct tooth geometry and engagement when the installed spur shows wear or inconsistent meshing.

Service technicians should remove the gearbox cover, inspect the motor pinion face and drivetrain bearings for runout, fit the spur ensuring axial alignment and even tooth contact, then verify free rotation and minimal endplay. Due to the plastic material, plan an initial check after a short run-in to confirm stable backlash under load.

From a setup perspective, the 55T spur shifts the effective gear ratio compared with alternate tooth counts and will influence torque delivery and top speed. Use it as a calibrated replacement during tuning cycles to incrementally adapt the vehicle's drive characteristics.

What critical checks ensure correct spur installation?

Confirm spur runout is within acceptable limits, check pinion concentricity, set paper-thin mesh, and verify bearing play is minimal before sealing the gearbox.

How does a 55T spur affect drive calculations?

A 55T spur increases overall gearing relative to smaller spurs; recalculate final drive ratio when modelling acceleration and top speed, and monitor motor load during test runs.

When should a plastic spur be swapped for a hardened option?

If you run high-power setups or race frequently on abrasive surfaces and observe accelerated wear or tooth deformation, consider switching to a hardened alternative to preserve drivetrain reliability.