Kyosho Mini-Z AWD Aluminium Motor Pinion Gear Set by 3Racing AWD-33  [AWD-33]

Aluminium motor pinion for Mini-Z AWD

This RC-scale aluminium motor pinion is supplied for use on Mini‑Z AWD models and is positioned as a direct replacement or hop-up for standard soft metal pinions. The part focuses on delivering a low-inertia, durable mating surface for small‑scale drivetrains where consistent gear mesh matters for lap‑to‑lap repeatability.

Fitment and role: the pinion installs on the motor shaft and works with the vehicle's existing spur gear and gearbox arrangement. As an aluminium unit it changes the mass and stiffness characteristics compared with typical brass or steel pinions, which can affect acceleration response and gear wear patterns. Use it when you need a lightweight option for tuning acceleration and thermal behavior at RC racing speeds.

Installation tips: ensure the motor shaft and set screw area are clean, check axial and radial play after fitting, and verify mesh with a few slow rotations before full-power runs. If your Mini‑Z uses a spacer or specific shimming sequence, follow the chassis' original alignment method to avoid overloading the teeth. Replace worn set screws and inspect the mating spur for burrs that can accelerate wear.

Maintenance and tuning: aluminium pinions can benefit from periodic inspection for tooth rounding and from light application of gear-safe lubricant on the spur gear rather than heavy greases that can attract debris. When changing tooth counts for tuning, note that small changes can noticeably alter acceleration and top speed on RC-scale tracks, so adjust in single-tooth steps and test on consistent track conditions.