Traxxas Revo 37T Delrin Spur Gear RE-029 by 3Racing  [RE-029]

Traxxas Revo Delrin Spur Gear 37T - 3RACING RE-029
Price:
USD$6.82
Brand:
3Racing
Model:
RE-029
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Technical Note - 37T Delrin Spur for Revo

The RE-029 is a Delrin 37-tooth spur engineered as a direct-service replacement for Traxxas Revo gearboxes. It is intended for hobbyists seeking a reliable plastic spur option to restore consistent mesh and reduce backlash in worn drivetrains.

The acetal construction offers predictable machining tolerances and repeatable tooth geometry suitable for tuning and setup work. Maintaining the original 37T tooth count ensures gear ratio integrity, allowing setup focus on axial location and pinion clearance rather than ratio changes.

Installation follows standard gearbox procedure: remove the cover, extract the old spur assembly, position the RE-029 onto the carrier or shaft, then verify axial alignment and fine-tune pinion mesh. Validate bearing condition and pinion runout during service to ensure long-term engagement stability.

Application Notes

  • Traxxas Revo

How should I confirm correct pinion mesh?

Secure the spur axially, then rotate the drivetrain while incrementally adjusting pinion distance or shims. Look for even tooth contact across the face and eliminate any endplay in bearings.

What inspections are recommended during replacement?

Inspect gearbox bearings, check pinion concentricity, and clean debris from the housing. Replace any worn bearings to prevent premature spur wear.

When is a metal spur preferable?

Consider metal spurs for continuous high-power applications or when repeated Delrin wear is observed. For most tuning and recreational use Delrin balances durability and drivetrain protection.

Can I reuse existing shims with RE-029?

Yes, existing shims often work, but verify axial position and mesh after fitting. Adjust shims as required to remove binding while keeping full tooth engagement.