3Racing 3RAC-3PY/38 38T Aluminium Pulley Gear - Racing Setup  [3RAC-3PY/38]

3RACING Aluminum Differential Pulley Gear T38 - 3RAC-3PY/38
Price:
USD$8.90
Brand:
3Racing
Model:
3RAC-3PY/38
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3Racing 3RAC-3PY/38 Racing Pulley Technical Summary

The 3Racing 38T aluminium differential pulley gear, model 3RAC-3PY/38, is intended for racers and tuners seeking a dependable 38T option to refine drivetrain behaviour. Aluminium construction offers dimensional stability under repeated runs, while the precise 38 tooth profile supports predictable engagement and consistent torque transfer across sessions. Use this pulley when dialing in gear mesh and drivetrain response for competitive performance.

Technical Notes and Advantages

  • Material: Aluminium provides stable geometry and resistance to wear during aggressive use.
  • Tooth Count: 38T profile maintains consistent gear spacing for reliable power delivery.
  • Compatibility: Fits setups expecting a 38 tooth differential pulley, allowing straightforward integration into common racing drivetrains.
  • Functionality: Helps reduce drivetrain variability and supports tighter setup tuning for lap-to-lap consistency.

How should I approach gear mesh with this pulley?

Set gear mesh to the vehicle maker's recommended clearance, then monitor for any deviation after a short test run. Small adjustments can improve engagement and reduce tooth wear.

Can I use this pulley for time trials and races?

Yes. Its consistent tooth geometry makes it suitable for competitive use where repeatable drivetrain behaviour is important for lap time consistency.

Any setup tips for competitive tuning?

Pair the pulley with properly maintained gears and check bearings and diff condition. Fine tune mesh and check drivetrain temperatures after practice runs to validate the setup.