3Racing 3RAC-3PY/39 Aluminium Pulley Gear T39 - Racing Grade  [3RAC-3PY/39]

3RACING Aluminum Differential Pulley Gear T39 - 3RAC-3PY/39
Price:
USD$8.80
Brand:
3Racing
Model:
3RAC-3PY/39
Condition:
Brand New
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Race oriented aluminium pulley for tuned drivetrains

The 3Racing Aluminum Differential Pulley Gear T39, model 3RAC-3PY/39, is produced to support precise drivetrain behaviour in tuned RC cars. Its aluminium construction reduces deformation under load and helps retain mesh geometry during aggressive runs.

Technical highlights for competitive setups

  • Material: Machined aluminium chosen for dimensional stability and improved resistance to tooth wear.
  • Tooth Count: T39 profile for accurate ratio retention and consistent engagement under torque.
  • Compatibility: Intended for vehicles that specify a T39 pulley and require metal upgrade parts.
  • Function: Stabilises drivetrain feedback and supports predictable throttle response during race conditions.

How should I torque fixings for optimal performance?

Use the vehicle manufacturer recommended torque for pulley fasteners, and recheck after initial runs. Correct torque prevents micro movement that can alter gear mesh and lap consistency.

Are there recommended supporting upgrades?

Consider upgrading bearings and using hardened shafts where possible to complement the 3RAC-3PY/39 and reduce secondary wear under high load conditions.

What checks ensure consistent mesh during a race weekend?

Verify pulley alignment, bearing play, and fastener torque before each session. Consistent setup checks help the 3Racing pulley maintain repeatable performance across heats.