3RACING 3RAC-SG4890/V2 48 Pitch 90T Spur Gear - Competition Tune  [3RAC-SG4890/V2]

3RACING 48 Pitch Spur Gear 90T Ver.2 - 3RAC-SG4890/V2
Price:
USD$4.40
Brand:
3Racing
Model:
3RAC-SG4890/V2
Condition:
Brand New
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Precision Spur for Race Setup 3RACING 3RAC-SG4890/V2

The 3Racing 48 Pitch Spur Gear 90T Ver.2 targets competitive tuners who require consistent mesh and predictable backlash behaviour. Its profile supports repeatable engagement under the variable loads common in race conditions.

Racing-Focused Attributes

  • Profile Accuracy: 48 pitch geometry promotes uniform tooth contact, reducing micro-slip during acceleration bursts.
  • Load Endurance: Manufactured to withstand the stresses of frequent high-RPM runs while maintaining geometry stability.
  • Setup Flexibility: Suitable for a range of 1/10 race chassis where precise ratio selection is part of tuning strategy.

Setup Guidance for Tuners

Install the 3Racing 48 Pitch Spur Gear 90T Ver.2 with a correctly cut 48 pitch pinion. Set mesh to the minimum clearance that eliminates binding, verify under load, and confirm there is no tooth scalloping after initial break-in laps.

What mesh tolerance should I aim for on race day?

Aim for the smallest clearance that prevents binding, typically verified by smooth acceleration and minimal gear noise. Re-check after a few laps as components settle.

How does spur size affect final drive in competition?

A 90T spur alters the overall ratio and can be used to fine tune top speed versus acceleration. Use consistent pinion steps to make predictable changes between runs.

Any break-in procedures recommended?

Perform a controlled break-in session at moderate load, then inspect teeth for even wear. Adjust mesh if any uneven contact appears before full race power is applied.