Yokomo YOKPG6440 Pinion Gear 64 Pitch 40 Teeth  [YOKPG6440]

Pinion Gear — 64 Pitch 40T

This is an R/C-scale pinion gear carried under the Yokomo YOKPG6440 designation intended as a replacement or spare for 64 pitch gear trains. It is described by its tooth count and pitch only, and serves as a basic mechanical component used in electric hobby models where 64 pitch gears are employed.

Compatibility depends on your existing motor shaft diameter and the pitch standard of your spur gear, so confirm both before fitting. This part is presented as a direct gear element without additional mounting hardware, and it is compatible with systems that accept 64 pitch pinion gears with 40 teeth.

Installation is straightforward in most setups: remove the motor or access the motor shaft, fit the pinion to the shaft, set correct gear mesh with the spur gear to avoid binding or excessive backlash, then secure the pinion using your motor's original retention method. Avoid forcing the gear onto a mismatched shaft and inspect the mesh under small throttle inputs before full use.

Tuning notes: changing tooth count alters overall gear ratio, trading top speed for acceleration or vice versa; 40 teeth at 64 pitch is a moderate choice that can be used when fine adjustments to gearing are needed during setup or track tuning. Regular inspection for wear and correct mesh will help maintain drivetrain longevity.