3Racing 3RAC-SG4885 Competition 48 Pitch 85T Spur Gear  [3RAC-SG4885]

3RACING 48 Pitch Spur Gear 85T - 3RAC-SG4885
Price:
USD$4.40
Brand:
3Racing
Model:
3RAC-SG4885
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Competition Grade 48 Pitch Spur for Precise Mesh

The 3Racing 48 Pitch Spur Gear 85T is aimed at racers and tuners who demand consistent mesh geometry and minimal backlash. Its tooth form and manufacture help reduce vibration and maintain predictable power transfer across aggressive throttle inputs.

Technical Highlights

  • Tooth Count: 85T to increase effective torque and refine acceleration control for circuit tuning.
  • Pitch: 48 pitch for direct compatibility with common racing pinions and easy ratio changes.
  • Material: Durable construction to stand up to repeated high load cycles and competitive use.

Setup Notes for Tuners

For optimal performance, set motor spacing to achieve full tooth contact without binding, then fine tune backlash to eliminate chatter while avoiding excessive preload. Match pinion tooth count carefully to reach the desired top speed versus acceleration compromise.

What pinion compatibility should I check for the 3RAC-SG4885?

Verify the pinion uses 48 pitch teeth and confirm motor mount spacing allows proper engagement. Use hardened pinions for heavy duty race use to reduce wear mismatch.

How do I set backlash for consistent lap times?

Aim for minimal but even backlash across the tooth face. Too tight causes binding and heat, too loose creates impact wear. Test with full throttle runs and adjust incrementally.

Which maintenance checks are most important for competition use?

Inspect tooth profiles for nicks and wear, ensure fasteners remain torqued, and check pinion condition. Replace worn components before they affect gear mesh and performance.

Does this spur suit high power brushless systems?

Yes, but pay attention to thermal and current load on drivetrain components. Use appropriate cooling and consider stronger pinions or reinforced gearboxes in high power applications.