3RACING 64 Pitch Spur Gear 89T 3RAC-SG6489 Racing Setup Spur  [3RAC-SG6489]

3RACING 64 Pitch Spur Gear 89T - 3RAC-SG6489
Price:
USD$4.40
Brand:
3Racing
Model:
3RAC-SG6489
Condition:
Brand New
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Setup-Focused Spur for Competitive Tuning

The 3RACING 64 Pitch Spur Gear 89T 3RAC-SG6489 is intended for racers tuning final drive characteristics on 1/10 scale cars. The consistent tooth count aids repeatable ratio changes for lap time refinement.

Drivetrain Compatibility

This 89T spur integrates with common 1/10 scale gear trains and supports quick ratio swaps during testing. It is suited to setups where incremental changes to acceleration and top speed are being evaluated.

Precision Installation Guidance

For optimal results, set precise mesh and check axial runout when fitting the spur. Regular inspection of contact pattern and backlash will help maintain predictable performance during race weekends.

What measurements should I check before swapping spurs?

Verify spur bore diameter, thickness, and tooth count relative to your pinion to ensure the desired final ratio and proper mesh clearance.

How can I assess correct mesh quickly?

Apply a thin film of grease on several teeth, rotate the gear under light load, and inspect the contact pattern to confirm even engagement across the tooth face.

Which signs indicate inconsistent performance?

Irregular tooth wear, noisy engagement, or sudden loss of drive are indicators to recheck mesh, alignment, and surrounding drivetrain components.