3Racing 3RAC-PG4831 Race Tuned 31T Pinion 48 Pitch  [3RAC-PG4831]

3RACING 48 Pitch Pinion Gear 31T (7075 w/ Hard Coating) - 3RAC-PG4831
Price:
USD$3.80
Brand:
3Racing
Model:
3RAC-PG4831
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Race-Grade Pinion for Tuners

The 3Racing 48 pitch 31T pinion, model 3RAC-PG4831, is specified for competitive setups where repeatable gear mesh and durability are crucial. Fabricated in 7075 aluminium and sealed with a hard coating, it aims to preserve tooth geometry during high rpm and aggressive acceleration.

Optimised for Competitive Use

Material selection and surface treatment reduce deformation and abrasive wear, maintaining consistent backlash which is essential when dialling in gearing for qualifying and race runs. This stability helps drivers keep predictable throttle response lap after lap.

Setup and Tuning Notes

As a 48 pitch, 31 tooth unit, the pinion should be matched to an appropriate spur and checked for correct mesh with shims or feeler methods preferred by experienced tuners. Regular inspection after heavy sessions will catch early wear and protect other drivetrain components.

What is the best way to check mesh for race setups?

Use a thin strip of paper to set initial mesh, then run a short low speed test to confirm no binding and make fine adjustments for minimal backlash without excessive tooth contact.

How does the hard coating affect tuning?

The hard coating preserves tooth profiles longer, allowing more consistent settings between race days and reducing the need to re-tune gear mesh after limited wear.

Which checks should be routine after practice runs?

Inspect pinion and spur for chatter marks, verify set screw torque, and confirm no debris has altered mesh; replace if any permanent tooth damage is found to protect motor and spur.