3RACING 3RAC-SG64121 64 Pitch 121T Spur Gear - Racing Tune Component  [3RAC-SG64121]

3RACING 64 Pitch Spur Gear 121T - 3RAC-SG64121
Price:
USD$4.40
Brand:
3Racing
Model:
3RAC-SG64121
Condition:
Brand New
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Race grade gearing with 3RACING 3RAC-SG64121

The 3RACING 3RAC-SG64121 is a specialist 64 pitch 121T spur designed for competitive on-road setups where repeatable gear ratios and predictable engagement are vital. It is intended to support fine tuning during chassis and motor optimisation.

Performance fitment

Engineered for systems using 64 pitch gearing, this spur integrates into 1/10 scale on-road cars to help teams and drivers dial in top speed versus acceleration tradeoffs through pinion swaps and measured ratio changes.

Setup and track maintenance

For best results, pair with a precision 64 pitch pinion and set gear mesh with the vehicle under realistic motor load. Inspect contact patterns regularly and replace the spur if you detect asymmetric wear to maintain drivetrain efficiency in race conditions.

How does spur tooth count affect lap times?

A higher or lower spur tooth count shifts top speed and acceleration. Use controlled changes with the 3RAC-SG64121 to find the optimal compromise for track layout and motor characteristics.

What mesh checks are recommended before a race?

Perform a static contact pattern check with a marker, then run a short warm-up to confirm no slop or binding appears under throttle. Recheck after practice runs.

Are there tuning tips for prolonging gear life during events?

Avoid over-tight mesh, keep the drivetrain free of grit between runs, and normalise gear changes so wear patterns remain predictable across practice and mains.