3Racing 3RAC-SG4875/V2 48 Pitch 75T Racing Spur Gear  [3RAC-SG4875/V2]

3RACING 48 Pitch Spur Gear 75T Ver.2 - 3RAC-SG4875/V2
Price:
USD$4.40
Brand:
3Racing
Model:
3RAC-SG4875/V2
Please kindly input your name and email address, we will inform you once we have the restocking.
Write a review

Technical Overview of the 3Racing Racing Spur

The 3Racing 48 Pitch Spur Gear 75T Ver.2 is engineered with racers in mind, focusing on repeatable mesh and stable torque transfer across laps. The 75-tooth configuration provides a consistent step for gearing adjustments and predictable drivetrain feedback during setup changes.

Core Features for Tuning and Race Use

  • Precise Tooth Geometry: Optimised contact patterns reduce cyclic loading and promote steady wear characteristics.
  • Consistent Durability: Designed to retain tooth form over extended race sessions, supporting repeatable setup comparisons.
  • 75T Gearing Character: Provides a calibration point for final drive tuning without requiring changes to chassis geometry.
  • Cross-Platform Fitment: Integrates with standard 48 pitch pinions used across common racing chassis.

How does using a 75T spur influence setup windows?

A 75T spur shifts final drive and affects acceleration versus top speed. Use it as a reference point when selecting pinion sizes to fine tune lap time trade offs.

What checks should I perform after installing this spur?

Verify axial and radial run out, confirm correct mesh and backlash, and perform a short break in under controlled load to ensure stable seating before race use.

Are there tuning tips for pairing pinions with this spur?

Start with your current pinion and test lap pace; adjust pinion tooth count incrementally to reach the desired acceleration or top speed while monitoring motor temps and drivetrain noise.