3RACING 3RAC-SG6491 64 Pitch 91T Spur Gear - Racing Setup Part  [3RAC-SG6491]

3RACING 64 Pitch Spur Gear 91T - 3RAC-SG6491
Price:
USD$4.40
Brand:
3Racing
Model:
3RAC-SG6491
Condition:
Brand New
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Race oriented 64 pitch spur for tuned gear trains

The 3Racing 64 Pitch Spur Gear 91T is specified for racers who need predictable mesh and repeatable drivetrain response. Its 91-tooth profile supports fine incremental changes to final drive ratio without introducing excess backlash.

Integration with competitive drivetrains

This spur caters to common 1/10 on-road configurations and works with standard 64 pitch pinions used in race setups. Fit checks for centre distance and pinion clearance remain essential to achieve optimal mesh and efficiency.

Serviceability and tuning workflow

Designed for frequent setup cycles, the 3Racing spur gear tolerates inspection and swap routines typical in race pits. Its consistent tooth form assists quick verification of mesh during pre-race checks and setup iterations.

What checks should I perform after fitting this spur?

Verify centre mesh under load, rotate the drivetrain to confirm smooth engagement across the rev range, and inspect gear faces for even contact before finalising the motor mount torque.

How does tooth count affect race setup decisions?

Tooth count directly changes final drive ratio; choosing 91T can lower gearing for improved acceleration or allow fitting of larger pinions while keeping acceptable motor load.

Any tuning tips for minimising gear noise?

Set a consistent small clearance at the meshing point, torque motor mount evenly, and run the gearbox slowly to confirm uniform tooth contact to reduce vibration and noise.