Tamiya 50978 TB Evo III Race Spur Gear Set (90T, 96T)  [50978]

Tamiya 50978 - TB Evo III / 3 Spur Gear (90T, 96T) SP-978
Price:
AUD$10.39
Brand:
Tamiya
Model:
50978
GTIN:
4950344509782
Condition:
Brand New
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Performance-Oriented Spur Set for Evo III

The Tamiya 50978 Spur Gear Set gives TB Evo III owners two Delrin spur gears with 90 and 96 teeth for straightforward ratio testing. These pieces are moulded to match the TB Evo III drive layout and provide consistent engagement lap after lap.

Material and Wear Resistance

Delrin is chosen for its wear resistance and low friction, which helps maintain clean gear mesh when running on-road. The black finish is practical for regular use and keeps the drivetrain looking tidy between services.

Installation Notes for Racers

Tamiya 50978 gears are designed for direct replacement on the TB Evo III without machining. Quick removal and refit make them handy when experimenting with gearing for different track conditions or motor setups.

How does changing between 90T and 96T affect performance?

Switching tooth counts alters the final drive ratio; the 90T gives a slightly taller ratio for better top speed with the same pinion, while the 96T leans toward stronger acceleration.

Will these fit other Tamiya models?

They are specifically cut for the TB Evo III layout. Some parts may interchange with close Tamiya transmissions, but always check shaft positions and clearances before fitting elsewhere.

Should I use grease or oil on Delrin gears?

A light synthetic gear grease helps reduce wear and noise. Avoid heavy oils that can attract dirt; apply sparingly and recheck after a few runs.

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